Calculation device

Abstract

To provide a calculation device that can improve characteristics.SOLUTION: According to an embodiment, a calculation device includes an element part, a first conductive part, a second conductive part, a first coupling conductive part, and a control part. The element part includes a first structure, a second structure, and a first coupling structure. The first structure includes a first cavity resonator, a first another cavity resonator, and a first coupler. The second structure includes a second cavity resonator, a second another cavity resonator, and a second coupler. The first coupling structure can couple the first structure and the second structure to each other. The control part can supply a first AC signal including an AC component to the first conductive part. The control part can supply a second AC signal including an AC component to the second conductive part. The control part can supply a first DC pulse signal to the first coupling conductive part.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] FIELD OF THE DISCLOSURE Embodiments of the present invention relate to a computing device. [Background technology]

[0002] For example, electronic circuits including a plurality of nonlinear elements are used in computing devices, and improved performance is desired in electronic circuits and computing devices. [Prior art documents] [Non-patent literature]

[0003] [Non-Patent Document 1] JD Teoh et al., arXiv: 2212.12077 (2022) [Non-Patent Document 2] H. Goto, Physical Review Applied 18, 034038 (2022) Summary of the Invention [Problem to be solved by the invention]

[0004] SUMMARY OF THE PRESENT EMBODIMENTS Embodiments of the present invention provide a computing device that can have improved performance. [Means for solving the problem]

[0005] According to an embodiment of the present invention, a computing device includes an element unit, a first conductive unit, a second conductive unit, a first coupling conductive unit, and a control unit. The element unit includes a first structure, a second structure, and a first coupling structure. The first structure includes a first cavity resonator having a first resonant frequency, a first other cavity resonator having a first other resonant frequency, and a first coupler capable of coupling the first cavity resonator and the first other cavity resonator. The first other resonant frequency is lower than the first resonant frequency. The second structure includes a second cavity resonator having a second resonant frequency, a second other cavity resonator having a second other resonant frequency, and a second coupler capable of coupling the second cavity resonator and the second other cavity resonator. The second other resonant frequency is lower than the second resonant frequency. The first coupling structure is capable of coupling the first structure and the second structure. The control unit is capable of supplying a first AC signal including an AC component to the first conductive unit. The control unit is capable of supplying a second AC signal including an AC component to the second conductive unit. A first magnetic field generated from the first conductive unit in response to the first AC signal is applied to the first coupler. A second magnetic field generated from the second conductive unit in response to the second AC signal is applied to the second coupler. The control unit is capable of supplying a first DC pulse signal to the first coupled conductive unit. A first coupled magnetic field generated from the first coupled conductive unit in response to the first DC pulse signal is applied to the first coupled structure. [Brief description of the drawings]

[0006] [Figure 1] FIG. 1 is a schematic plan view illustrating a computing device according to the first embodiment. [Diagram 2] FIG. 2 is a schematic perspective view illustrating a part of the computing device according to the first embodiment. [Diagram 3] FIG. 3 is a schematic plan view illustrating the computing device according to the first embodiment. [Figure 4] FIG. 4 is a schematic plan view illustrating the computing device according to the first embodiment. [Diagram 5] FIG. 5 is a schematic plan view illustrating a computing device according to the second embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0007] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. The drawings are schematic or conceptual, and the relationship between the thickness and width of each part, the size ratio between parts, etc. are not necessarily the same as those in reality. Even when the same part is shown, the dimensions and ratios of each part may be different depending on the drawing. In this specification and each drawing, elements similar to those described above with reference to the previous drawings are given the same reference numerals and detailed descriptions thereof will be omitted as appropriate.

[0008] (First embodiment) FIG. 1 is a schematic plan view illustrating a computing device according to the first embodiment. FIG. 2 is a schematic perspective view illustrating a part of the computing device according to the first embodiment. 1, a computing device 110 according to the embodiment includes an element unit 10E. In this example, the computing device 110 further includes a first conductive unit 41, a second conductive unit 42, a first coupling conductive unit 61, and a control unit 70.

[0009] The element portion 10E includes a first structure 11, a second structure 12, and a first coupling structure 21. The first structure 11 includes a first cavity resonator 11H having a first resonant frequency, a first other cavity resonator 11L having a first other resonant frequency, and a first coupler 11C. The first coupler 11C can couple the first cavity resonator 11H and the first other cavity resonator 11L. The first other resonant frequency is lower than the first resonant frequency. The first structure 11 is a resonator pair including two cavity resonators.

[0010] The second structure 12 includes a second cavity resonator 12H having a second resonant frequency, a second other cavity resonator 12L having a second other resonant frequency, and a second coupler 12C. The second coupler 12C can couple the second cavity resonator 12H and the second other cavity resonator 12L. The second other resonant frequency is lower than the second resonant frequency. The second structure 12 is another resonator pair including two cavity resonators.

[0011] The first coupling structure 21 can couple the first structure 11 and the second structure 12. In this example, the first other cavity resonator 11L is between the first cavity resonator 11H and the first coupling structure 21. The second cavity resonator 12H is between the first coupling structure 21 and the second other cavity resonator 12L. The first coupling structure 21 is between the first other cavity resonator 11L and the second cavity resonator 12H.

[0012] For example, the first coupling structure 21 can be coupled to the first other cavity resonator 11L and the second cavity resonator 12H.

[0013] The control unit 70 can supply a first AC signal Sa1 including an AC component to the first conductive unit 41. The control unit 70 can supply a second AC signal Sa2 including an AC component to the second conductive unit 42. A first magnetic field (AC magnetic field) generated from the first conductive unit 41 in response to the first AC signal Sa1 is applied to the first coupler 11C. A second magnetic field (AC magnetic field) generated from the second conductive unit 42 in response to the second AC signal Sa2 is applied to the second coupler 12C. In one example, the first conductive unit 41 and the second conductive unit 42 are coils. The first conductive unit 41 and the second conductive unit 42 may be any conductive member to which a current can be supplied. The conductive member may be provided, for example, in a member (base) on which the coupling structure is provided. The coil may be provided away from the member (base) on which the coupling structure is provided.

[0014] The control unit 70 can supply a first DC pulse signal Sd1 to the first coupling conductive unit 61. A first coupling magnetic field generated from the first coupling conductive unit 61 in response to the first DC pulse signal Sd1 is applied to the first coupling structure 21.

[0015] For example, one of the first cavity resonator 11H and the first other cavity resonator 11L is in a single-photon state. The other of the first cavity resonator 11H and the first other cavity resonator 11L is in a state where no photons are present (for example, a "vacuum state"). For example, a state where the first cavity resonator 11H is in a single-photon state and the first other cavity resonator 11L is in a vacuum state corresponds to one of "0" and "1" (for example, "0"). For example, a state where the first cavity resonator 11H is in a vacuum state and the first other cavity resonator 11L is in a single-photon state corresponds to the other of "0" and "1" (for example, "1"). A state that is not one of the above two states corresponds to an error state. Which resonator has a photon present represents a quantum bit. The first structure 11 functions as one quantum bit.

[0016] Similarly, for example, one of the second cavity resonator 12H and the second other cavity resonator 12L is in a single photon state. The other of the second cavity resonator 12H and the second other cavity resonator 12L is in a state in which no photons are present (e.g., a "vacuum state"). The presence of a photon in either cavity represents a quantum bit. The second structure 12 functions as another quantum bit.

[0017] As described above, in the embodiment, an AC magnetic field is applied to the first coupler 11C. This allows the state of the first structure 11 (quantum bit) to be manipulated. An AC magnetic field is applied to the second coupler 12C. This allows the state of the second structure 12 (quantum bit) to be manipulated. That is, one quantum bit gate operation is performed.

[0018] As described above, in the embodiment, a DC pulse magnetic field is applied to the first coupling structure 21. This causes a two-qubit gate to be performed on the first structure 11 (qubit) and the second structure 12 (qubit).

[0019] In the embodiment, for example, quantum bit gate operations can be easily performed. Quantum bit gate operations can be quickly performed. Large scale can be easily achieved. According to the embodiment, a computing device capable of improving characteristics can be provided.

[0020] The first coupler 11C, the second coupler 12C, and the first coupling structure 21 are, for example, frequency-tunable transmon couplers.

[0021] In the embodiment, a cavity resonator is used. The cavity resonator is, for example, a three-dimensional superconducting microwave resonator. The coherence time is long in the cavity resonator. Two cavity resonators (resonator pair) are used as a quantum bit. A quantum bit is represented by which of the two cavity resonators has one photon. One quantum bit gate operation can be performed by controlling an AC magnetic field (AC magnetic flux) (modulating the frequency of the transmon) for a frequency-variable transmon coupler that couples the two cavity resonators of the resonator pair. A plurality of quantum bits are coupled by a frequency-variable transmon coupler. For example, two quantum bit gate operations can be performed by controlling a DC magnetic field (DC magnetic flux) (changing the frequency of the transmon) for a frequency-variable transmon coupler that couples two cavity resonators belonging to different quantum bits (resonator pair).

[0022] In the embodiment, the control unit 70 can control the frequency of the AC component of the first AC signal Sa1. This allows one quantum bit gate operation to be performed in the first structure 11. The control unit 70 can control the frequency of the AC component of the second AC signal Sa2. This allows one quantum bit gate operation to be performed in the second structure 12.

[0023] For example, the control unit 70 may be able to set the frequency of the AC component of the first AC signal Sa1 to a value based on the first resonant frequency and the first other resonant frequency. For example, the control unit 70 may be able to set the frequency of the AC component of the second AC signal Sa2 to a value based on the second resonant frequency and the second other resonant frequency.

[0024] In one example, the control unit 70 can set the frequency of the AC component of the first AC signal Sa1 to a first difference between the first resonant frequency and the first other resonant frequency. This allows one quantum bit gate operation to be performed in the first structure 11. The control unit 70 can set the frequency of the AC component of the second AC signal Sa2 to a second difference between the second resonant frequency and the second other resonant frequency. This allows one quantum bit gate operation to be performed in the second structure 12. For example, the control unit 70 can set the frequency of the AC component of the first AC signal Sa1 to a value that is 0.5 to 2 times the first difference. For example, the control unit 70 can set the frequency of the AC component of the second AC signal Sa2 to a value that is 0.5 to 2 times the second difference.

[0025] In another example, the control unit 70 can set the frequency of the AC component of the first AC signal Sa1 to a first sum of the first resonant frequency and the first other resonant frequency. This allows one quantum bit gate operation to be performed in the first structure 11. The control unit 70 can set the frequency of the AC component of the second AC signal Sa2 to a second sum of the second resonant frequency and the second other resonant frequency. This allows one quantum bit gate operation to be performed in the second structure 12.

[0026] In another example, the control unit 70 can set the frequency of the AC component of the first AC signal Sa1 to a first value between twice the first resonant frequency and twice the first other resonant frequency. This allows one quantum bit gate operation to be performed in the first structure 11. The control unit 70 can set the frequency of the AC component of the second AC signal Sa2 to a second value between twice the second resonant frequency and twice the second other resonant frequency. This allows one quantum bit gate operation to be performed in the second structure 12.

[0027] For example, in the first state, the first DC pulse signal Sd1 is not yet supplied to the first coupling conductive unit 61. In the second state, the first DC pulse signal Sd1 is supplied to the first coupling conductive unit 61.

[0028] For example, the difference between the first state resonant frequency of the first coupling structure 21 in the first state and the first other resonant frequency is greater than the difference between the second state resonant frequency of the first coupling structure 21 in the second state and the first other resonant frequency.

[0029] For example, before the first DC pulse signal Sd1 is supplied, the resonant frequency of the first coupling structure 21 is significantly different from the first other resonant frequency. When the first DC pulse signal Sd1 is supplied, the resonant frequency of the first coupling structure 21 approaches the first other resonant frequency. After the first DC pulse signal Sd1 is supplied, the resonant frequency of the first coupling structure 21 is significantly different from the first other resonant frequency and returns to the original frequency.

[0030] For example, the difference between the first state resonant frequency of the first coupling structure 21 in the first state and the second resonant frequency is greater than the difference between the second state resonant frequency of the first coupling structure 21 in the second state and the second resonant frequency.

[0031] For example, before the first DC pulse signal Sd1 is supplied, the resonant frequency of the first coupling structure 21 is significantly different from the second resonant frequency. In a state in which the first DC pulse signal Sd1 is supplied, the resonant frequency of the first coupling structure 21 approaches the second resonant frequency. After the first DC pulse signal Sd1 is supplied, the resonant frequency of the first coupling structure 21 is significantly different from the second resonant frequency and returns to the original frequency. A two-qubit gate operation is performed by such an operation. The two-qubit gate operation by such an operation is based on, for example, ZZ coupling (see, for example, H. Goto, Physical Review Applied 18, 034038 (2022)).

[0032] 2 illustrates the first structure 11, the second structure 12, and the first coupling structure 21. The first cavity resonator 11H, the first other cavity resonator 11L, the second cavity resonator 12H, and the second other cavity resonator 12L may be cylindrical along the first direction D1. The resonators (the first cavity resonator 11H, the first other cavity resonator 11L, the second cavity resonator 12H, and the second other cavity resonator 12L) include an enclosure member 10G (cylindrical portion) and an inner member 10S (columnar portion). The inner member 10S is provided inside the enclosure member 10G.

[0033] The first direction D1 is the Z-axis direction. A direction perpendicular to the Z-axis direction is the X-axis direction. A direction perpendicular to the Z-axis direction and the X-axis direction is the Y-axis direction. The first cavity resonator 11H, the first other cavity resonator 11L, the second cavity resonator 12H, and the second other cavity resonator 12L may be aligned along, for example, the XY plane.

[0034] As shown in FIG. 1, in this example, the first coupler 11C includes a first Josephson junction 11Ca and a first other Josephson junction 11Cb connected in parallel to the first Josephson junction 11Ca. The second coupler 12C includes a second Josephson junction 12Ca and a second other Josephson junction 12Cb connected in parallel to the second Josephson junction 12Ca. The first coupling structure 21 includes a first coupled Josephson junction 21a and a first coupled other Josephson junction 21b connected in parallel to the first coupled Josephson junction 21a. Each of the first coupler 11C, the second coupler 12C, and the first coupling structure 21 includes a loop including a plurality of Josephson junctions. The resonant frequency can be adjusted by controlling the magnetic flux in the loop. This enables variable coupling.

[0035] As shown in FIG. 1, the computing device 110 may further include a third conductive portion 43 and a second coupling conductive portion 62. The element portion 10E includes a third structure 13 and a second coupling structure 22. The third structure 13 includes a third cavity resonator 13H having a third resonant frequency, a third other cavity resonator 13L having a third other resonant frequency, and a third coupler 13C. The third coupler 13C can couple the third cavity resonator 13H and the third other cavity resonator 13L. The third other resonant frequency is lower than the third resonant frequency. The third structure 13 functions as one quantum bit. The second coupling structure 22 can couple the first other cavity resonator 11L and the third cavity resonator 13H.

[0036] The control unit 70 can supply a third AC signal Sa3 including an AC component to the third conductive unit 43. A third magnetic field generated from the third conductive unit in response to the third AC signal Sa3 is applied to the third coupler 13C. The control unit 70 can supply a second DC pulse signal Sd2 to the second coupling conductive unit 62. A second coupling magnetic field generated from the second coupling conductive unit 62 in response to the second DC pulse signal Sd2 is applied to the second coupling structure 22.

[0037] A third magnetic field based on the third AC signal Sa3 allows one quantum bit gate operation to be performed in the third structure 13. A second coupling magnetic field based on the second DC pulse signal Sd2 allows two quantum bit gate operations to be performed in the first structure 11 and the third structure 13.

[0038] 1, the computing device 110 may further include a first readout resonator 11R. The first readout resonator 11R may be coupled to the first cavity resonator 11H and the third other cavity resonator 13L. The first readout resonator 11R allows the states of quantum bits (photon states) in the first structure 11 and the third structure 13 to be read out.

[0039] 1, in this example, the third coupler 13C includes a third Josephson junction 13Ca and a third other Josephson junction 13Cb connected in parallel to the third Josephson junction 13Ca. The second coupled structure 22 includes a second coupled Josephson junction 22a and a second other coupled Josephson junction 22b connected in parallel to the second coupled Josephson junction 22a. Variable coupling is possible.

[0040] As shown in FIG. 1, the computing device 110 may further include a fourth conductive portion 44 and a third coupling conductive portion 63. The element portion 10E includes a fourth structure 14 and a third coupling structure 23. The fourth structure 14 includes a fourth cavity resonator 14H having a fourth resonant frequency, a fourth other cavity resonator 14L having a fourth other resonant frequency, and a fourth coupler 14C. The fourth coupler 14C can couple the fourth cavity resonator 14H and the fourth other cavity resonator 14L. The fourth other resonant frequency is lower than the fourth resonant frequency. The fourth structure 14 functions as one quantum bit. The third coupling structure 23 can couple the second other cavity resonator 12L and the fourth cavity resonator 14H.

[0041] The control unit 70 can supply a fourth AC signal Sa4 including an AC component to the fourth conductive unit 44. A fourth magnetic field generated from the fourth conductive unit 44 in response to the fourth AC signal Sa4 is applied to the fourth coupler 14C. The control unit 70 can supply a third DC pulse signal Sd3 to the third coupling conductive unit 63. A third coupling magnetic field generated from the third coupling conductive unit 63 in response to the third DC pulse signal Sd3 is applied to the third coupling structure 23.

[0042] A fourth magnetic field based on the fourth AC signal Sa4 enables one-qubit gate operation in the fourth structure 14. A third coupling magnetic field based on the third DC pulse signal Sd3 enables two-qubit gate operations in the second structure 12 and the fourth structure 14.

[0043] 1, the computing device 110 may further include a second readout resonator 12R. The second readout resonator 12R may be coupled to the second cavity resonator 12H and the fourth other cavity resonator 14L. The second readout resonator 12R allows the states of quantum bits (photon states) in the second structure 12 and the fourth structure 14 to be read out.

[0044] 1, in this example, the fourth coupler 14C includes a fourth Josephson junction 14Ca and a fourth other Josephson junction 14Cb connected in parallel to the fourth Josephson junction 14Ca. The third coupled structure 23 includes a third coupled Josephson junction 23a and a third coupled other Josephson junction 23b connected in parallel to the third coupled Josephson junction 23a. Frequency-tunable coupling is possible.

[0045] As shown in FIG. 1, the computing device 110 may further include a fourth coupling conductive unit 64. The element unit 10E includes a fourth coupling structure 24. The fourth coupling structure 24 can couple the third cavity resonator 13H and the fourth other cavity resonator 14L. The control unit 70 can supply a fourth DC pulse signal Sd4 to the fourth coupling conductive unit 64. A fourth coupling magnetic field generated from the fourth coupling conductive unit 64 in response to the fourth DC pulse signal Sd4 is applied to the fourth coupling structure 24. The fourth coupling magnetic field based on the fourth DC pulse signal Sd4 can perform two-qubit gate operations in the third structure 13 and the fourth structure 14. The same operations as those described above regarding the first structure 11 and the second structure 12 may be applied to the third structure 13 and the fourth structure 14.

[0046] 1, in this example, the fourth coupled structure 24 includes a fourth coupled Josephson junction 24a and a fourth coupled other Josephson junction 24b connected in parallel to the fourth coupled Josephson junction 24a. Frequency-tunable coupling is possible.

[0047] FIG. 3 is a schematic plan view illustrating the computing device according to the first embodiment. 3, in the computing device 111 according to the embodiment, the configurations of the coupler and the coupling structure are different from those of the coupler and the coupling structure in the computing device 111. Except for this, the configuration of the computing device 111 may be the same as the configuration of the computing device 110.

[0048] 3, in the computing device 111, the first coupler 11C includes a first Josephson junction 11Ca, a first other Josephson junction 11Cb, and a first intermediate Josephson junction 11Cc. An end of the first Josephson junction 11Ca is connected to an end of the first intermediate Josephson junction 11Cc. An other end of the first Josephson junction 11Ca is connected to an other end of the first other Josephson junction 11Cb. An end of the first other Josephson junction 11Cb is connected to an other end of the first intermediate Josephson junction 11Cc.

[0049] The second coupler 12C includes a second Josephson junction 12Ca, a second other Josephson junction 12Cb, and a second intermediate Josephson junction 12Cc. An end of the second Josephson junction 12Ca is connected to an end of the second intermediate Josephson junction 12Cc. An other end of the second Josephson junction 12Ca is connected to an other end of the second other Josephson junction 12Cb. An end of the second other Josephson junction 12Cb is connected to an other end of the second intermediate Josephson junction 12Cc.

[0050] The first coupled structure 21 includes a first coupled Josephson junction 21a, a first coupled other Josephson junction 21b, and a first coupled intermediate Josephson junction 21c. An end of the first coupled Josephson junction 21a is connected to an end of the first coupled intermediate Josephson junction 21c. An other end of the first coupled Josephson junction 21a is connected to an other end of the first coupled other Josephson junction 21b. An end of the first coupled other Josephson junction 21b is connected to an other end of the first coupled intermediate Josephson junction 21c.

[0051] In the computing device 111, the first coupler 11C, the second coupler 12C and the first coupling structure 21 are double transmon couplers, which enables faster gate operation.

[0052] In the computing device 111, the third coupler 13C includes a third Josephson junction 13Ca, a third other Josephson junction 13Cb, and a third intermediate Josephson junction 13Cc. An end of the third Josephson junction 13Ca is connected to an end of the third intermediate Josephson junction 13Cc. An other end of the third Josephson junction 13Ca is connected to an other end of the third other Josephson junction 13Cb. An end of the third other Josephson junction 13Cb is connected to an other end of the third intermediate Josephson junction 13Cc.

[0053] The fourth coupler 14C includes a fourth Josephson junction 14Ca, a fourth other Josephson junction 14Cb, and a fourth intermediate Josephson junction 14Cc. An end of the fourth Josephson junction 14Ca is connected to an end of the fourth intermediate Josephson junction 14Cc. An other end of the fourth Josephson junction 14Ca is connected to an other end of the fourth other Josephson junction 14Cb. An end of the fourth other Josephson junction 14Cb is connected to an other end of the fourth intermediate Josephson junction 14Cc.

[0054] The second coupled structure 22 includes a second coupled Josephson junction 22a, a second coupled other Josephson junction 22b, and a second coupled intermediate Josephson junction 22c. An end of the second coupled Josephson junction 22a is connected to an end of the second coupled intermediate Josephson junction 22c. An other end of the second coupled Josephson junction 22a is connected to an other end of the second coupled other Josephson junction 22b. An end of the second coupled other Josephson junction 22b is connected to the other end of the second coupled intermediate Josephson junction 22c.

[0055] The third coupled structure 23 includes a third coupled Josephson junction 23a, a third coupled other Josephson junction 23b, and a third coupled intermediate Josephson junction 23c. An end of the third coupled Josephson junction 23a is connected to an end of the third coupled intermediate Josephson junction 23c. An other end of the third coupled Josephson junction 23a is connected to an other end of the third coupled other Josephson junction 23b. An end of the third coupled other Josephson junction 23b is connected to the other end of the third coupled intermediate Josephson junction 23c.

[0056] The fourth coupled structure 24 includes a fourth coupled Josephson junction 24a, a fourth coupled other Josephson junction 24b, and a fourth coupled intermediate Josephson junction 24c. An end of the fourth coupled Josephson junction 24a is connected to an end of the fourth coupled intermediate Josephson junction 24c. An other end of the fourth coupled Josephson junction 24a is connected to an other end of the fourth coupled other Josephson junction 24b. An end of the fourth coupled other Josephson junction 24b is connected to the other end of the fourth coupled intermediate Josephson junction 24c.

[0057] FIG. 4 is a schematic plan view illustrating the computing device according to the first embodiment. In Figure 4, the conductive portions (first conductive portion 41, second conductive portion 42, third conductive portion 43, fourth conductive portion 44, first coupling conductive portion 61, second coupling conductive portion 62, third coupling conductive portion 63 and fourth coupling conductive portion 64, etc.) are omitted.

[0058] In the computing device 111, the first coupler 11C includes a first portion 11Cp, a first other portion 11Cq, a first opposing portion 11Cr, and a first opposing other portion 11Cs. The first opposing portion 11Cr is electrically connected to one end of the first Josephson junction 11Ca and one end of the first intermediate Josephson junction 11Cc. The first opposing other portion 11Cs is electrically connected to one end of the first other Josephson junction 11Cb and the other end of the first intermediate Josephson junction 11Cc. The first portion 11Cp is electrically connected to the other end of the first Josephson junction 11Ca and the other end of the first other Josephson junction 11Cb. The first other portion 11Cq is electrically connected to the other end of the first Josephson junction 11Ca and the other end of the first other Josephson junction 11Cb.

[0059] The first portion 11Cp is electrically connected to the envelope member 10G (see FIG. 2) of the first cavity resonator 11H. The first other portion 11Cq is electrically connected to the envelope member 10G of the first other cavity resonator 11L. The first opposing portion 11Cr is capacitively coupled to the inner member 10S (see FIG. 2) of the first cavity resonator 11H. The first opposing other portion 11Cs is capacitively coupled to the inner member 10S of the first other cavity resonator 11L. The first portion 11Cp and the first other portion 11Cq are set to, for example, a fixed potential (for example, ground potential).

[0060] In the computing device 111, the second coupler 12C includes a second portion 12Cp, a second other portion 12Cq, a second opposing portion 12Cr, and a second opposing other portion 12Cs. The second opposing portion 12Cr is electrically connected to one end of the second Josephson junction 12Ca and one end of the second intermediate Josephson junction 12Cc. The second opposing other portion 12Cs is electrically connected to one end of the second other Josephson junction 12Cb and the other end of the second intermediate Josephson junction 12Cc. The second portion 12Cp is electrically connected to the other end of the second Josephson junction 12Ca and the other end of the second other Josephson junction 12Cb. The second other portion 12Cq is electrically connected to the other end of the second Josephson junction 12Ca and the other end of the second other Josephson junction 12Cb.

[0061] The second portion 12Cp is electrically connected to the envelope member 10G of the second cavity resonator 12H. The second other portion 12Cq is electrically connected to the envelope member 10G of the second other cavity resonator 12L. The second opposing other portion 12Cr is capacitively coupled to the inner member 10S of the second cavity resonator 12H. The second opposing other portion 12Cs is capacitively coupled to the inner member 10S of the second other cavity resonator 12L. The second portion 12Cp and the second other portion 12Cq are set to, for example, a fixed potential (for example, ground potential).

[0062] In the computing device 111, the third coupler 13C includes a third portion 13Cp, a third other portion 13Cq, a third opposing portion 13Cr, and a third opposing other portion 13Cs. The third opposing portion 13Cr is electrically connected to one end of the third Josephson junction 13Ca and one end of the third intermediate Josephson junction 13Cc. The third opposing other portion 13Cs is electrically connected to one end of the third other Josephson junction 13Cb and the other end of the third intermediate Josephson junction 13Cc. The third portion 13Cp is electrically connected to the other end of the third Josephson junction 13Ca and the other end of the third other Josephson junction 13Cb. The third other portion 13Cq is electrically connected to the other end of the third Josephson junction 13Ca and the other end of the third other Josephson junction 13Cb.

[0063] The third portion 13Cp is electrically connected to the envelope member 10G of the third other cavity resonator 13L. The third other portion 13Cq is electrically connected to the envelope member 10G of the third cavity resonator 13H. The third opposing other portion 13Cr is capacitively coupled to the inner member 10S of the third other cavity resonator 13L. The third opposing other portion 13Cs is capacitively coupled to the inner member 10S of the third other cavity resonator 13L. The third portion 13Cp and the third other portion 13Cq are set to, for example, a fixed potential (for example, ground potential).

[0064] In the computing device 111, the fourth coupler 14C includes a fourth portion 14Cp, a fourth other portion 14Cq, a fourth opposing portion 14Cr, and a fourth opposing other portion 14Cs. The fourth opposing portion 14Cr is electrically connected to one end of the fourth Josephson junction 14Ca and one end of the fourth intermediate Josephson junction 14Cc. The fourth opposing other portion 14Cs is electrically connected to one end of the fourth other Josephson junction 14Cb and the other end of the fourth intermediate Josephson junction 14Cc. The fourth portion 14Cp is electrically connected to the other end of the fourth Josephson junction 14Ca and the other end of the fourth other Josephson junction 14Cb. The fourth other portion 14Cq is electrically connected to the other end of the fourth Josephson junction 14Ca and the other end of the fourth other Josephson junction 14Cb.

[0065] The fourth portion 14Cp is electrically connected to the envelope member 10G of the fourth other cavity resonator 14L. The fourth other portion 14Cq is electrically connected to the envelope member 10G of the fourth cavity resonator 14H. The fourth opposing portion 14Cr is capacitively coupled to the inner member 10S of the fourth other cavity resonator 14L. The fourth opposing other portion 14Cs is capacitively coupled to the inner member 10S of the fourth other cavity resonator 14L. The fourth portion 14Cp and the fourth other portion 14Cq are set to, for example, a fixed potential (for example, ground potential).

[0066] In the computing device 111, the first coupling structure 21 includes a first coupling portion 21p, a first coupling other portion 21q, a first coupling opposite portion 21r, and a first coupling opposite other portion 21s. The first coupling opposite portion 21r is electrically connected to one end of the first coupling Josephson junction 21a and one end of the first coupling intermediate Josephson junction 21c. The first coupling opposite other portion 21s is electrically connected to one end of the first coupling other Josephson junction 21b and the other end of the first coupling intermediate Josephson junction 21c. The first coupling portion 21p is electrically connected to the other end of the first coupling Josephson junction 21a and the other end of the first coupling other Josephson junction 21b. The first coupling other portion 21q is electrically connected to the other end of the first coupling Josephson junction 21a and the other end of the first coupling other Josephson junction 21b.

[0067] The first coupling portion 21p is electrically connected to the envelope member 10G of the first other cavity resonator 11L. The first coupling other portion 21q is electrically connected to the envelope member 10G of the second cavity resonator 12H. The first coupling opposing portion 21r is capacitively coupled to the inner member 10S of the first other cavity resonator 11L. The first coupling opposing other portion 21s is capacitively coupled to the inner member 10S of the second cavity resonator 12H. The first coupling portion 21p and the first coupling other portion 21q are set to, for example, a fixed potential (for example, ground potential).

[0068] In the computing device 111, the second coupling structure 22 includes a second coupling portion 22p, a second coupling other portion 22q, a second coupling opposite portion 22r, and a second coupling opposite other portion 22s. The second coupling opposite other portion 22r is electrically connected to one end of the second coupling Josephson junction 22a and one end of the second coupling intermediate Josephson junction 22c. The second coupling opposite other portion 22s is electrically connected to one end of the second coupling other Josephson junction 22b and the other end of the second coupling intermediate Josephson junction 22c. The second coupling portion 22p is electrically connected to the other end of the second coupling Josephson junction 22a and the other end of the second coupling other Josephson junction 22b. The second coupling other portion 22q is electrically connected to the other end of the second coupling Josephson junction 22a and the other end of the second coupling other Josephson junction 22b.

[0069] The second coupling portion 22p is electrically connected to the envelope member 10G of the first other cavity resonator 11L. The second coupling other portion 22q is electrically connected to the envelope member 10G of the third cavity resonator 13H. The second coupling opposing portion 22r is capacitively coupled to the inner member 10S of the first other cavity resonator 11L. The second coupling opposing other portion 22s is capacitively coupled to the inner member 10S of the third cavity resonator 13H. The second coupling portion 22p and the second coupling other portion 22q are set to, for example, a fixed potential (for example, ground potential).

[0070] In the computing device 111, the third coupling structure 23 includes a third coupling portion 23p, a third coupling other portion 23q, a third coupling opposing portion 23r, and a third coupling opposing other portion 23s. The third coupling opposing portion 23r is electrically connected to one end of the third coupling Josephson junction 23a and one end of the third coupling intermediate Josephson junction 23c. The third coupling opposing other portion 23s is electrically connected to one end of the third coupling other Josephson junction 23b and the other end of the third coupling intermediate Josephson junction 23c. The third coupling portion 23p is electrically connected to the other end of the third coupling Josephson junction 23a and the other end of the third coupling other Josephson junction 23b. The third coupling other portion 23q is electrically connected to the other end of the third coupling Josephson junction 23a and the other end of the third coupling other Josephson junction 23b.

[0071] The third coupling portion 23p is electrically connected to the envelope member 10G of the second other cavity resonator 12L. The third coupling other portion 23q is electrically connected to the envelope member 10G of the fourth cavity resonator 14H. The third coupling opposing portion 23r is capacitively coupled to the inner member 10S of the third other cavity resonator 13L. The third coupling opposing other portion 23s is capacitively coupled to the inner member 10S of the fourth cavity resonator 14H. The third coupling portion 23p and the third coupling other portion 23q are set to, for example, a fixed potential (for example, ground potential).

[0072] In the computing device 111, the fourth coupling structure 24 includes a fourth coupling portion 24p, a fourth coupling other portion 24q, a fourth coupling opposing portion 24r, and a fourth coupling opposing other portion 24s. The fourth coupling opposing portion 24r is electrically connected to one end of the fourth coupling Josephson junction 24a and one end of the fourth coupling intermediate Josephson junction 24c. The fourth coupling opposing other portion 24s is electrically connected to one end of the fourth coupling other Josephson junction 24b and the other end of the fourth coupling intermediate Josephson junction 24c. The fourth coupling portion 24p is electrically connected to the other end of the fourth coupling Josephson junction 24a and the other end of the fourth coupling other Josephson junction 24b. The fourth coupling other portion 24q is electrically connected to the other end of the fourth coupling Josephson junction 24a and the other end of the fourth coupling other Josephson junction 24b.

[0073] The fourth coupling portion 24p is electrically connected to the envelope member 10G of the third cavity resonator 13H. The fourth coupling other portion 24q is electrically connected to the envelope member 10G of the fourth other cavity resonator 14L. The fourth coupling opposing portion 24r is capacitively coupled to the inner member 10S of the third cavity resonator 13H. The fourth coupling opposing other portion 24s is capacitively coupled to the inner member 10S of the fourth other cavity resonator 14L. The fourth coupling portion 24p and the fourth coupling other portion 24q are set to, for example, a fixed potential (for example, ground potential).

[0074] The envelope member 10G includes a superconductor. For example, the inner member 10S corresponds to a signal line. The envelope member 10G is set to a fixed potential (for example, ground potential), thereby obtaining, for example, stable characteristics.

[0075] Second embodiment FIG. 5 is a schematic plan view illustrating a computing device according to the second embodiment. 5, in a computing device 120 according to the embodiment, at least one of the control unit 70, the conductive unit, and the coupling conductive unit is omitted. The rest of the configuration of the computing device 120 may be the same as that of the computing device 111.

[0076] In the computing device 120, at least one of the coupler and the coupling structure includes a double transmon coupler. Stable bit operations can be executed at high speed in the computing device 120. A computing device capable of improving performance is provided.

[0077] The embodiments may include the following technical solutions. (Technical proposal 1) An element portion; A first conductive portion; A second conductive portion; A first coupling conductive portion; A control unit; Equipped with the element portion includes a first structure, a second structure, and a first bonding structure, The first structure is a first cavity resonator having a first resonant frequency; a first other cavity resonator having a first other resonant frequency; a first coupler capable of coupling the first cavity resonator and the first other cavity resonator; Including, The first other resonant frequency is lower than the first resonant frequency, The second structure is a second cavity resonator having a second resonant frequency; a second other cavity resonator having a second other resonant frequency; a second coupler capable of coupling the second cavity resonator and the second other cavity resonator; Including, The second other resonant frequency is lower than the second resonant frequency, the first connection structure is capable of connecting the first structure and the second structure; The control unit is capable of supplying a first AC signal including an AC component to the first conductive unit, The control unit is capable of supplying a second AC signal including an AC component to the second conductive unit, a first magnetic field generated from the first conductive portion in response to the first AC signal is applied to the first coupler; a second magnetic field generated from the second conductive portion in response to the second AC signal is applied to the second coupler; The control unit is capable of supplying a first DC pulse signal to the first coupling conductive unit, A computing device, wherein a first coupling magnetic field generated from the first coupling conductive portion in response to the first DC pulse signal is applied to the first coupling structure.

[0078] (Technical proposal 2) In a first state, before the first DC pulse signal is supplied to the first coupling conductive portion, In a second state, the first DC pulse signal is supplied to the first coupling conductive portion; The computing device described in technical solution 1, wherein a difference between a first state resonant frequency of the first coupling structure in the first state and the first other resonant frequency is greater than a difference between a second state resonant frequency of the first coupling structure in the second state and the first other resonant frequency.

[0079] (Technical proposal 3) In a first state, before the first DC pulse signal is supplied to the first coupling conductive portion, In a second state, the first DC pulse signal is supplied to the first coupling conductive portion; The computing device described in technical solution 1, wherein a difference between a first state resonant frequency of the first coupling structure in the first state and the second resonant frequency is greater than a difference between a second state resonant frequency of the first coupling structure in the second state and the second resonant frequency.

[0080] (Technical proposal 4) the first other cavity resonator is between the first cavity resonator and the first coupling structure; the second cavity resonator is between the first coupling structure and the second other cavity resonator; The computing device according to any one of technical solutions 1 to 3, wherein the first coupling structure is between the first other cavity resonator and the second cavity resonator.

[0081] (Technical proposal 5) The computing device according to any one of Technical Solutions 1 to 4, wherein the first coupling structure is capable of coupling to the first other cavity resonator and the second cavity resonator.

[0082] (Technical proposal 6) the first coupler includes a first Josephson junction and a first other Josephson junction connected in parallel with the first Josephson junction; the second coupler includes a second Josephson junction and a second other Josephson junction connected in parallel with the second Josephson junction; The computing device according to any one of technical proposals 1 to 5, wherein the first coupled structure includes a first coupled Josephson junction and a first coupled other Josephson junction connected in parallel to the first coupled Josephson junction.

[0083] (Technical proposal 7) the first coupled structure includes a first coupled Josephson junction, a first coupled other Josephson junction, and a first coupled intermediate Josephson junction; an end of the first coupled Josephson junction is connected to an end of the first coupled intermediate Josephson junction; the other end of the first coupled Josephson junction is connected to the other end of the first coupled other Josephson junction; The computing device according to any one of technical solutions 1 to 5, wherein an end of the first coupled other Josephson junction is connected to the other end of the first coupled intermediate Josephson junction.

[0084] (Technical proposal 8) the first coupler includes a first Josephson junction, a first other Josephson junction, and a first intermediate Josephson junction; an end of the first Josephson junction is connected to an end of the first intermediate Josephson junction; the other end of the first Josephson junction is connected to the other end of the first other Josephson junction; The computing device according to technical solution 7, wherein an end of the first other Josephson junction is connected to the other end of the first intermediate Josephson junction.

[0085] (Technical proposal 9) the second coupler includes a second Josephson junction, a second other Josephson junction, and a second intermediate Josephson junction; an end of the second Josephson junction is connected to an end of the second intermediate Josephson junction; the other end of the second Josephson junction is connected to the other end of the second other Josephson junction; The computing device according to technical solution 8, wherein the end of the second other Josephson junction is connected to the other end of the second intermediate Josephson junction.

[0086] (Technical proposal 10) A third conductive portion; A second coupling conductive portion; Further equipped with the element portion includes a third structure and a second bonding structure, The third structure is a third cavity resonator having a third resonant frequency; a third other cavity resonator having a third other resonant frequency; a third coupler capable of coupling the third cavity resonator and the third other cavity resonator; Including, The third other resonant frequency is lower than the third resonant frequency, the second coupling structure is capable of coupling the first other-cavity resonator and the third cavity resonator; the control unit is capable of supplying a third AC signal including an AC component to the third conductive unit; a third magnetic field generated from the third conductive portion in response to the third AC signal is applied to the third coupler; The control unit is capable of supplying a second DC pulse signal to the second coupling conductive unit, A computing device according to any one of technical proposals 1 to 9, wherein a second coupling magnetic field generated from the second coupling conductive portion in response to the second DC pulse signal is applied to the second coupling structure.

[0087] (Technical proposal 11) Further comprising a first readout resonator; The computing device according to technical solution 10, wherein the first readout resonator is capable of coupling with the first cavity resonator and the third other cavity resonator.

[0088] (Technical proposal 12) A fourth conductive portion; A third coupling conductive portion; Further equipped with the element portion includes a fourth structure and a third bonding structure, The fourth structure is a fourth cavity resonator having a fourth resonant frequency; a fourth other cavity resonator having a fourth other resonant frequency; a fourth coupler capable of coupling the fourth cavity resonator and the fourth other cavity resonator; Including, The fourth other resonant frequency is lower than the fourth resonant frequency, the third coupling structure is capable of coupling the second other-cavity resonator and the fourth cavity resonator; the control unit is capable of supplying a fourth AC signal including an AC component to the fourth conductive unit; a fourth magnetic field generated from the fourth conductive portion in response to the fourth AC signal is applied to the fourth coupler; the control unit is capable of supplying a third DC pulse signal to the third coupling conductive unit; The computing device according to technical solution 10 or 11, wherein a third coupling magnetic field generated from the third coupling conductive part in response to the third DC pulse signal is applied to the third coupling structure.

[0089] (Technical proposal 13) Further comprising a second readout resonator; The computing device according to technical solution 12, wherein the second readout resonator is capable of coupling with the second cavity resonator and the fourth other cavity resonator.

[0090] (Technical proposal 14) Further comprising a fourth coupling conductive portion; the element portion includes a fourth bonding structure, the fourth coupling structure is capable of coupling the third cavity resonator and the fourth other cavity resonator; the control unit is capable of supplying a fourth DC pulse signal to the fourth coupling conductive unit; The computing device according to technical proposal 12 or 13, wherein a fourth coupling magnetic field generated from the fourth coupling conductive part in response to the fourth DC pulse signal is applied to the fourth coupling structure.

[0091] (Technical proposal 15) An element portion is provided, the element portion includes a first structure, a second structure, and a first bonding structure, The first structure is a first cavity resonator having a first resonant frequency; a first other cavity resonator having a first other resonant frequency; a first coupler capable of coupling the first cavity resonator and the first other cavity resonator; Including, The first other resonant frequency is lower than the first resonant frequency, The second structure is a second cavity resonator having a second resonant frequency; a second other cavity resonator having a second other resonant frequency; a second coupler capable of coupling the second cavity resonator and the second other cavity resonator; Including, The second other resonant frequency is lower than the second resonant frequency, The first coupling structure is capable of coupling the first structure and the second structure.

[0092] (Technical proposal 16) the first coupled structure includes a first coupled Josephson junction, a first coupled other Josephson junction, and a first coupled intermediate Josephson junction; an end of the first coupled Josephson junction is connected to an end of the first coupled intermediate Josephson junction; the other end of the first coupled Josephson junction is connected to the other end of the first coupled other Josephson junction; The computing device according to technical solution 15, wherein an end of the first coupled other Josephson junction is connected to the other end of the first coupled intermediate Josephson junction.

[0093] (Technical proposal 17) the first coupler includes a first Josephson junction, a first other Josephson junction, and a first intermediate Josephson junction; an end of the first Josephson junction is connected to an end of the first intermediate Josephson junction; the other end of the first Josephson junction is connected to the other end of the first other Josephson junction; an end of the first other Josephson junction is connected to the other end of the first intermediate Josephson junction; the second coupler includes a second Josephson junction, a second other Josephson junction, and a second intermediate Josephson junction; an end of the second Josephson junction is connected to an end of the second intermediate Josephson junction; the other end of the second Josephson junction is connected to the other end of the second other Josephson junction; The computing device according to technical proposal 15 or 16, wherein an end of the second other Josephson junction is connected to the other end of the second intermediate Josephson junction.

[0094] (Technical proposal 18) the element portion includes a third structure and a second bonding structure, The third structure is a third cavity resonator having a third resonant frequency; a third other cavity resonator having a third other resonant frequency; a third coupler capable of coupling the third cavity resonator and the third other cavity resonator; Including, The third other resonant frequency is lower than the third resonant frequency, the second coupling structure is capable of coupling the first other-cavity resonator and the third cavity resonator; the third coupler includes a third Josephson junction, a third other Josephson junction, and a third intermediate Josephson junction; an end of the third Josephson junction is connected to an end of the third intermediate Josephson junction; the other end of the third Josephson junction is connected to the other end of the third other Josephson junction; The computing device according to any one of Technical Solutions 15 to 17, wherein an end of the third other Josephson junction is connected to the other end of the third intermediate Josephson junction.

[0095] (Technical proposal 19) the element portion includes a fourth structure and a third bonding structure, The fourth structure is a fourth cavity resonator having a fourth resonant frequency; a fourth other cavity resonator having a fourth other resonant frequency; a fourth coupler capable of coupling the fourth cavity resonator and the fourth other cavity resonator; Including, The fourth other resonant frequency is lower than the fourth resonant frequency, the third coupling structure is capable of coupling the second other-cavity resonator and the fourth cavity resonator; the fourth coupler includes a fourth Josephson junction, a fourth other Josephson junction, and a fourth middle Josephson junction; an end of the fourth Josephson junction is connected to an end of the fourth intermediate Josephson junction; the other end of the fourth Josephson junction is connected to the other end of the fourth other Josephson junction; The computing device according to technical solution 18, wherein an end of the fourth other Josephson junction is connected to the other end of the fourth intermediate Josephson junction.

[0096] (Technical proposal 20) the first connection structure includes a first connection portion, a first other connection portion, a first opposing connection portion, and a first opposing other connection portion; the first coupled opposing portion is electrically connected to one end of the first coupled Josephson junction and one end of the first coupled intermediate Josephson junction; the first coupled opposite portion is electrically connected to one end of the first coupled opposite Josephson junction and the other end of the first coupled intermediate Josephson junction; the first coupling portion is electrically connected to the other end of the first coupled Josephson junction and the other end of the first coupled other Josephson junction; the first coupled other portion is electrically connected to the other end of the first coupled Josephson junction and the other end of the first coupled other Josephson junction; the first coupling portion is electrically connected to a first other-cavity resonator envelope member of the first other-cavity resonator; the first coupling portion is electrically connected to a second cavity resonator envelope member of the second cavity resonator; the first coupling opposing portion is capacitively coupled to a first other-cavity resonator inner member of the first other-cavity resonator, The computing device according to Technical Solution 7 or 16, wherein the first coupling opposing other part is capacitively coupled to a second cavity resonator inner member of the second cavity resonator.

[0097] According to the embodiment, a computing device capable of improving characteristics can be provided.

[0098] The above describes the embodiment of the present invention with reference to examples. However, the present invention is not limited to these examples. For example, the specific configurations of each element, such as the structure, cavity resonator, coupler, coupling structure, and control unit, included in the computing device are included in the scope of the present invention as long as a person skilled in the art can implement the present invention in the same way and obtain the same effect by appropriately selecting them from the known range.

[0099] Any combination of two or more elements of each example, within the scope of technical feasibility, is also included within the scope of the present invention as long as it includes the gist of the present invention.

[0100] All computing devices that can be implemented by a person skilled in the art by appropriately modifying the design of the computing device described above as an embodiment of the present invention are within the scope of the present invention as long as they include the gist of the present invention.

[0101] Within the scope of the concept of the present invention, a person skilled in the art may conceive of various modifications and alterations, and it is understood that these modifications and alterations also fall within the scope of the present invention.

[0102] Although some embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their modifications are included in the scope and spirit of the invention, and are included in the scope of the invention and its equivalents described in the claims. [Explanation of symbols]

[0103] 10E: Element part, 10G: Outer shell parts, 10S: Inner parts, 11~14: 1st~4th structures, 11C~14C: 1st~4th couplers, 11H~14H: 1st~4th キャビティ resonators, 11L ~ 14L: 1st ~ 4th other resonator, 11R, 12R: 1st and 2nd resonator, 11Ca ~ 14Ca: 1st ~ 4th resonator joint, 11Cb~14Cb: The 1st~4th other ジョセフソン joint, 11Cc~14Cc: 1st~4th intermediate joints, 11Cp~14Cp: 1st~4th parts, 11Cq~14Cq: 1st~4th other parts, 11Cr~14Cr: 1st~4th opposite parts, 11Cs~14Cs: 1st~4th opposite other parts, 21~24: 1st~4th joint structures, 21a~24a: 1st~4th joint joints, 21b~24b: 1st~4th joint other joints, 21c~24c: 1st~4th joint intermediate joints, 21p~24p: 1st~4th combined parts, 21q~24q: 1st~4th combined other parts, 21r~24r: 1st~4th combined opposite parts, 21s~24s: 1st~4th combined opposite parts, 41~44: 1st~4th conductive parts, 61~64: 1st~4th conductive parts, 70: control part, 110, 111, 120: calculation device, D1: 1st direction, Sa1~Sa4: 1st~4th AC signals, Sd1~Sd4: 1st~4th DC Pars signals

Claims

1. An element portion; A first conductive portion; A second conductive portion; A first coupling conductive portion; A control unit; Equipped with the element portion includes a first structure, a second structure, and a first bonding structure, The first structure is a first cavity resonator having a first resonant frequency; a first other cavity resonator having a first other resonant frequency; a first coupler capable of coupling the first cavity resonator and the first other cavity resonator; Including, The first other resonant frequency is lower than the first resonant frequency, The second structure is a second cavity resonator having a second resonant frequency; a second other cavity resonator having a second other resonant frequency; a second coupler capable of coupling the second cavity resonator and the second other cavity resonator; Including, The second other resonant frequency is lower than the second resonant frequency, the first connection structure is capable of connecting the first structure and the second structure; The control unit is capable of supplying a first AC signal including an AC component to the first conductive unit, The control unit is capable of supplying a second AC signal including an AC component to the second conductive unit, a first magnetic field generated from the first conductive portion in response to the first AC signal is applied to the first coupler; a second magnetic field generated from the second conductive portion in response to the second AC signal is applied to the second coupler; The control unit is capable of supplying a first DC pulse signal to the first coupling conductive unit, A computing device, wherein a first coupling magnetic field generated from the first coupling conductive portion in response to the first DC pulse signal is applied to the first coupling structure.

2. In a first state, before the first DC pulse signal is supplied to the first coupling conductive portion, In a second state, the first DC pulse signal is supplied to the first coupling conductive portion; 2. The computing device of claim 1, wherein a difference between a first state resonant frequency of the first coupling structure in the first state and the first other resonant frequency is greater than a difference between a second state resonant frequency of the first coupling structure in the second state and the first other resonant frequency.

3. The computing device of claim 1 or 2, wherein the first coupling structure is capable of coupling to the first other cavity resonator and the second cavity resonator.

4. the first coupler includes a first Josephson junction and a first other Josephson junction connected in parallel with the first Josephson junction; the second coupler includes a second Josephson junction and a second other Josephson junction connected in parallel with the second Josephson junction; 2. The computing device of claim 1, wherein the first coupled structure includes a first coupled Josephson junction and a first coupled other Josephson junction connected in parallel with the first coupled Josephson junction.

5. the first coupled structure includes a first coupled Josephson junction, a first coupled other Josephson junction, and a first coupled middle Josephson junction; an end of the first coupled Josephson junction is connected to an end of the first coupled intermediate Josephson junction; the other end of the first coupled Josephson junction is connected to the other end of the first coupled other Josephson junction; 2. The computing device of claim 1, wherein an end of the first coupled other Josephson junction is connected to an other end of the first coupled middle Josephson junction.

6. the first coupler includes a first Josephson junction, a first other Josephson junction, and a first intermediate Josephson junction; an end of the first Josephson junction is connected to an end of the first intermediate Josephson junction; the other end of the first Josephson junction is connected to the other end of the first other Josephson junction; 6. The computing device of claim 5, wherein an end of the first other Josephson junction is connected to an other end of the first intermediate Josephson junction.

7. the second coupler includes a second Josephson junction, a second other Josephson junction, and a second middle Josephson junction; an end of the second Josephson junction is connected to an end of the second intermediate Josephson junction; the other end of the second Josephson junction is connected to the other end of the second other Josephson junction; 7. The computing device of claim 6, wherein an end of the second other Josephson junction is connected to an other end of the second intermediate Josephson junction.

8. An element portion is provided, the element portion includes a first structure, a second structure, and a first bonding structure, The first structure is a first cavity resonator having a first resonant frequency; a first other cavity resonator having a first other resonant frequency; a first coupler capable of coupling the first cavity resonator and the first other cavity resonator; Including, The first other resonant frequency is lower than the first resonant frequency, The second structure is a second cavity resonator having a second resonant frequency; a second other cavity resonator having a second other resonant frequency; a second coupler capable of coupling the second cavity resonator and the second other cavity resonator; Including, The second other resonant frequency is lower than the second resonant frequency, The first coupling structure is capable of coupling the first structure and the second structure.

9. the first coupled structure includes a first coupled Josephson junction, a first coupled other Josephson junction, and a first coupled middle Josephson junction; an end of the first coupled Josephson junction is connected to an end of the first coupled intermediate Josephson junction; the other end of the first coupled Josephson junction is connected to the other end of the first coupled other Josephson junction; 9. The computing device of claim 8, wherein an end of the first coupled other Josephson junction is connected to an other end of the first coupled middle Josephson junction.

10. the first connection structure includes a first connection portion, a first other connection portion, a first opposing connection portion, and a first opposing other connection portion; the first coupled opposing portion is electrically connected to one end of the first coupled Josephson junction and one end of the first coupled intermediate Josephson junction; the first coupled opposite portion is electrically connected to one end of the first coupled opposite Josephson junction and the other end of the first coupled intermediate Josephson junction; the first coupling portion is electrically connected to the other end of the first coupled Josephson junction and the other end of the first coupled other Josephson junction; the first coupled other portion is electrically connected to the other end of the first coupled Josephson junction and the other end of the first coupled other Josephson junction; the first coupling portion is electrically connected to a first other-cavity resonator envelope member of the first other-cavity resonator; the first coupling portion is electrically connected to a second cavity resonator envelope member of the second cavity resonator; the first coupling opposing portion is capacitively coupled to a first other-cavity resonator inner member of the first other-cavity resonator, The computing device of claim 5 or 9, wherein the first coupling opposing other portion is capacitively coupled to a second cavity resonator inner member of the second cavity resonator.

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