Probe for nuclear magnetic resonance technology and quantum computer

Abstract

The utility model discloses a probe for nuclear magnetic resonance technology and a quantum computer. The probe comprises a frame, an adjusting mechanism, a resonant cavity assembly and an antenna assembly. The resonant cavity assembly is fixed on the frame, the resonant cavity assembly comprises a resonant cavity body and at least one capacitor, the resonant cavity body is of a hollow structure, the side wall of the resonant cavity body is provided with a slotted structure, and the capacitor is arranged in the slotted structure; the adjusting mechanism comprises a fixed assembly and a movable assembly, the fixed assembly is fixedly installed on the frame, and the movable assembly is movably connected with the frame; the antenna assembly comprises an antenna, an antenna cable and a resonant circuit which are connected in sequence, the antenna cable is fixedly connected with the moving assembly, and at least part of the antenna in the antenna assembly extends into the resonant cavity of the resonant cavity body; and the resonance circuit is used for processing a transmitting signal provided for the antenna and / or a receiving signal returned by the antenna. The resonant frequency can be freely adjusted, and the signal quality and stability are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to quantum computing technical field, especially a kind of probe for nuclear magnetic resonance technique and quantum computer. BACKGROUND

[0002] In the field of quantum computing, the scheme of nuclear magnetic resonance quantum computer is a very friendly and easy-to-implement technical route, and is gradually becoming a key means for studying microscopic quantum states and quantum information processing. With the in-depth development of quantum computing research, the demand for accurate detection and analysis of quantum systems is increasing, which makes the performance and function of nuclear magnetic resonance quantum computer crucial, and also puts forward higher requirements for quantum bit signals.

[0003] From the perspective of physics, nuclear magnetic resonance quantum computer is based on the spin characteristics of atomic nuclei in a magnetic field. By applying a radio frequency pulse of a specific frequency, the resonance of the atomic nuclei of the nuclear magnetic sample is excited, and information about the structure and dynamics of the substance is obtained. In this process, the nuclear magnetic resonance probe plays a key role in connecting the sample and the detection device, and its performance directly affects the quality and reliability of the experimental data.

[0004] In recent years, with the continuous progress of material science, electronic technology and microfabrication technology, the design and manufacture of nuclear magnetic resonance probes have also made certain progress. Currently, the common nuclear magnetic resonance probe is usually composed of a resonant circuit, a radio frequency coil, a basic clamping structure and a simple signal transmission line, adopts a relatively fixed installation method, uses a traditional resonant circuit to transmit and receive radio frequency signals from the receiving transmission plate, and introduces the radio frequency signals into the nuclear magnetic resonance sample and receives and transmits the returned signals. SUMMARY

[0005] The present inventors have found that the existing nuclear magnetic resonance probe has the following problems:

[0006] 1) Large resonant cavity size, occupies more space.

[0007] The existing nuclear magnetic resonance probe introduces a resonant cavity to improve signal strength. In the field of nuclear magnetic resonance quantum computers, the commonly used resonant frequency point is 20-400MHz. In order to meet the resonant demand of the commonly used resonant frequency band, a larger resonant cavity is usually required, for example: the size of a cylindrical resonant cavity is generally 62-330mm in radius and 124-660mm in height. The large size and large space occupation make it inconvenient to use in compact experimental equipment.

[0008] 2) Signal attenuation is serious, and resonant effect is poor.

[0009] In the process of radio frequency signal transmission, there is signal attenuation and transmission loss, resulting in the effective signal strength reaching the sample being reduced, and the nuclear magnetic resonance quantum bit signal returned after feedback from the sample being very weak. The weak effective signal is difficult to be accurately captured and analyzed, which greatly reduces the quality of experimental data and cannot effectively guarantee the reliability, and seriously affects the sensitivity and accuracy of detection. The existing resonant cavity signal enhancement effect is limited and cannot meet the signal enhancement needs of quantum computers, which greatly hinders the in-depth research and expansion of nuclear magnetic resonance quantum computing.

[0010] 3) The resonant frequency is not adjustable.

[0011] The existing nuclear magnetic resonance probe has a fixed resonant cavity size, so the resonant frequency is generally not adjustable. In the quantum computing experiment scene, the resonant frequency often needs to be flexibly adjusted according to different sample characteristics and experimental conditions. The existing probe cannot meet the diversified experimental needs.

[0012] 4) The internal circuit layout of the probe is unreasonable, resulting in electromagnetic interference and noise, poor signal quality, low stability, and large experimental error.

[0013] In view of the above problems, the utility model is provided to provide a probe for nuclear magnetic resonance technology and a quantum computer which overcomes the above problems or at least partially solves the above problems.

[0014] The utility model embodiment provides a probe for nuclear magnetic resonance technology, comprising: a frame, an adjusting mechanism, a resonant cavity assembly and an antenna assembly;

[0015] The resonant cavity assembly is fixed on the frame, and the resonant cavity assembly comprises a resonant cavity body and at least one capacitor. The resonant cavity body is a hollow structure, and a slotted structure is arranged on the side wall of the resonant cavity body. The capacitor is arranged in the slotted structure.

[0016] The adjusting mechanism comprises a fixed component and a moving component. The fixed component is fixedly installed on the frame, and the moving component is movably connected with the frame.

[0017] The antenna assembly comprises an antenna, an antenna cable and a resonant circuit connected in sequence. The antenna cable is fixedly connected with the moving component, and the antenna at least partially extends into the resonant cavity of the resonant cavity body.

[0018] The resonant circuit is used for processing the transmission signal provided to the antenna and / or the reception signal returned by the antenna.

[0019] In some optional embodiments, the fixed component comprises a fixed rod, and the moving component comprises an adjusting screw rod and a moving plate.

[0020] The fixed rod is fixedly installed on the frame;

[0021] The moving plate is fixedly connected with the adjusting screw rod and slidably connected with the fixed rod;

[0022] The adjusting screw rod cooperates with the threaded hole on the frame to adjust the height of the moving plate.

[0023] In some optional embodiments, the frame comprises a top plate, a side plate and a support plate extending from the side plate, the top plate is provided with a first fixed installation hole and an adjusting threaded hole, and the support plate is provided with a second fixed installation hole;

[0024] The fixed rod is fixedly connected to the frame through the first fixed installation hole and the second fixed installation hole, and the adjusting screw rod is installed on the frame through the adjusting threaded hole.

[0025] In some optional embodiments, the antenna cable passes through the cable hole on the moving plate, the antenna is connected to the end of the antenna cable and extends into the resonant cavity of the resonant cavity body at least partially.

[0026] In some optional embodiments, the resonant cavity assembly further comprises a connecting column fixedly installed on the frame, and one end of the resonant cavity body is fixedly connected with the connecting column.

[0027] In some optional embodiments, the resonant cavity body is a hollow column, the column is a cylinder, a square column or a polygonal column, the hollow column is not sealed at the top and bottom, and the sidewall of the hollow column is provided with a slotted structure.

[0028] In some optional embodiments, the slotted structure of the resonant cavity body is an arc-shaped notch on the sidewall of the hollow cylinder, and the slotted angle of the arc-shaped notch ranges from 5° to 60°.

[0029] The slotted angle refers to the included angle between the lines connecting the center of the hollow cylinder to the two ends of the slotted structure on the cross section of the hollow cylinder.

[0030] In some optional embodiments, the slotted angle of the arc-shaped notch ranges from 5° to 15°.

[0031] In some optional embodiments, the resonant cavity body adopts a metal material with a conductivity greater than a set conductivity threshold.

[0032] In some optional embodiments, the capacitors are arranged side by side from top to bottom in the slotted structure, and the capacitance and installation position of the capacitors are designed according to the required resonant frequency range.

[0033] In some optional embodiments, the moving assembly comprises an adjusting device and a moving plate;

[0034] The moving plate is connected with the adjusting device, the adjusting device is fixedly installed on the frame, and the adjusting device is one of a screw telescopic device, an electric telescopic device, a pneumatic telescopic device, a hydraulic telescopic device, a lever telescopic device, a spring telescopic device and a worm gear telescopic device.

[0035] The adjusting device drives the moving plate to move up and down to change the height of the moving plate.

[0036] In some optional embodiments, the length of the antenna in the antenna assembly extending into the resonant cavity of the resonant cavity body is adjusted by the moving assembly to change the effective cavity size of the resonant cavity.

[0037] Embodiments of the utility model provide a kind of quantum computer, comprising: the probe for nuclear magnetic resonance technique described above;

[0038] The probe is used to excite electromagnetic waves in the resonant cavity based on receiving radio frequency transmission signals, and return radio frequency feedback signals based on electromagnetic waves excited by nuclear magnetic samples in the resonant cavity.

[0039] In some optional embodiments, the probe is specifically used for: receiving radio frequency transmission signals sent by the transmitter, transmitting the radio frequency transmission signals to the antenna, and exciting electromagnetic waves in the resonant cavity of the resonant cavity body through the antenna;Nuclear magnetic signals excited by nuclear magnetic samples in the resonant cavity are received through the antenna to obtain radio frequency feedback signals, which are sent to the receiver;Wherein, the electromagnetic waves excited by the antenna based on the radio frequency signals and the same frequency nuclear magnetic signals generated by the nuclear magnetic samples after being excited by the electromagnetic waves will oscillate and strengthen in the resonant cavity.

[0040] The above technical solutions provided by the embodiments of the utility model have at least the following beneficial effects:

[0041] The probe for nuclear magnetic resonance technology provided by the embodiment of the utility model, the resonant cavity body in the resonant cavity assembly adopts the slotted structure, and the capacitor is arranged at the slot, the slotted structure design provides more space and path for the electromagnetic field distribution and interaction in the resonant cavity body of the resonant cavity, so that the energy can be more effectively stored and transmitted, thereby significantly improving the electromagnetic coupling efficiency, thereby greatly increasing the energy storage capacity of the resonant cavity.

[0042] Other features and advantages of the present application will be further described in the following specification, and some of them will become apparent from the specification, or will be understood by those skilled in the art through implementation of the present application. The purpose and other advantages of the present application can be achieved and obtained through the structure specifically pointed out in the written specification, claims, and drawings.

[0043] The technical solutions of the utility model will be further described in detail below through the drawings and embodiments. DRAWINGS

[0044] The drawings are used to provide further understanding of the utility model, and constitute a part of the specification, and are used to explain the utility model together with the embodiments of the utility model, and do not constitute the limitation to the utility model. In the drawings:

[0045] Figure 1 It is the three-dimensional structure schematic view of the probe for nuclear magnetic resonance technology in the embodiment of the utility model;

[0046] Figure 2 It is the front view of the probe for nuclear magnetic resonance technology in the embodiment of the utility model;

[0047] Figure 3 It is the front view of the resonant cavity assembly in the embodiment of the utility model;

[0048] Figure 4 It is the three-dimensional structure schematic view of the resonant cavity assembly in the embodiment of the utility model;

[0049] Figure 5 It is the resonant cavity slotting angle schematic view in the embodiment of the utility model;

[0050] Figure 6 It is one of the example diagrams of the capacitor setting in the embodiment of the utility model;

[0051] Figure 7 It is the second example diagram of the capacitor setting in the embodiment of the utility model;

[0052] Figure 8 It is the structural schematic diagram of the quantum computer in the embodiment of the utility model.

[0053] Mark explanation:

[0054] 1, probe;

[0055] 11, frame; 12, adjusting mechanism; 13, resonant cavity assembly; 14, antenna assembly;

[0056] 111, top plate; 112, side plate; 113, support plate;

[0057] 121, fixed assembly; 122, moving assembly; 1211, fixed rod; 1221, adjusting screw; 1222, moving plate;

[0058] 131, resonant cavity body; 132, capacitor; 133, connecting column; 1311, slot structure;

[0059] 141, antenna; 142, cable; 143, resonant circuit. DETAILED DESCRIPTION

[0060] Exemplary embodiments of the present disclosure will be described in greater detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that the present disclosure can be more thoroughly understood and the scope of the present disclosure can be accurately conveyed to those skilled in the art.

[0061] Although certain progress has been made in the design and manufacture of existing nuclear magnetic resonance probes, there are still many challenges. For example, when facing complex quantum computing experimental scenarios, the probe needs to be able to adapt to different magnetic field strengths, spatial conditions and sample characteristics. At the same time, as the scale and complexity of quantum computing systems continue to increase, higher requirements are placed on the spatial resolution, sensitivity and frequency response range of the probe.

[0062] The existing nuclear magnetic resonance probe has the problems of large resonant cavity size, large space occupation, serious signal attenuation, poor resonant effect, non-adjustable resonant frequency, unreasonable circuit layout leading to serious electromagnetic interference and noise, etc., and cannot meet the use requirements of complex quantum computing experimental scenarios and complex quantum computer systems.

[0063] In order to solve the problems in the prior art, the utility model discloses a kind of probes 1 for nuclear magnetic resonance technology, which can be used in nuclear magnetic resonance quantum computer and related fields, and an alternative structure of the probe 1 for nuclear magnetic resonance technology is as shown in Figure 1 And Figure 2 As shown, comprising: frame 11, adjusting mechanism 12, resonant cavity assembly 13 and antenna assembly 14;

[0064] Resonant cavity assembly 13 is fixed on frame 11, and resonant cavity assembly 13 includes resonant cavity body 131 and at least one capacitor 132, resonant cavity body 131 is hollow structure, and slot structure 1311 is arranged on the side wall thereof, and capacitor 132 is arranged in slot structure 1311;

[0065] Adjusting mechanism 12 includes fixed assembly 121 and moving assembly 122, fixed assembly 121 is fixedly installed on frame 11, and moving assembly 122 is movably connected with frame 11;

[0066] Antenna assembly 14 includes antenna 141, antenna cable 142 and resonant circuit 143 connected in sequence, antenna cable 142 is fixedly connected with moving assembly 122, and antenna 141 in antenna assembly 14 at least partially extends into the resonant cavity of resonant cavity body 131;Antenna cable 142 is fixedly connected with moving assembly 122, so that antenna cable 142 moves with moving assembly 122, and drives antenna 141 to move in resonant cavity.

[0067] Resonant circuit 143 is used for processing transmitting signal provided to antenna 141 and / or receiving signal returned by antenna 141.

[0068] An alternative implementation is that resonant circuit 143 is used for transmitting signal after processing to antenna 141, and the transmitting signal is processed into signal meeting the requirements of antenna transmission, and the receiving signal returned by antenna 141 is processed into signal required by receiver.Antenna 142 is used for exciting electromagnetic wave in resonant cavity based on transmitting signal and receiving electromagnetic wave after oscillation in resonant cavity to return receiving signal.

[0069] The utility model discloses a probe 1 for nuclear magnetic resonance technique, the resonant cavity body 131 of resonant cavity subassembly 13 adopts the slot structure 1311, and the capacitor 132 is arranged at the slot, and the slot structure 1311 is designed as the electromagnetic field distribution and interaction of resonant cavity provides more space and path, so that energy can be more effectively stored and delivered, thereby significantly improve its electromagnetic coupling efficiency, and further greatly increase the energy storage capacity of resonant cavity. The length of the antenna in the antenna assembly 14 is changed by the adjusting mechanism 12 to change the effective cavity size of the resonant cavity, and the height of the antenna is changed, and the internal structure and electromagnetic field distribution of the resonant cavity can be flexibly adjusted, thereby realizing the continuous and fine adjustment of the resonant frequency of the resonant cavity, improving the adaptability and flexibility of the probe, so that the probe can be flexibly adjusted according to different sample characteristics and experimental conditions, thereby providing more accurate and reliable signal processing support for various complex experiments, and the sensitivity and accuracy of the probe signal detection are significantly improved. In addition, through the improved design of the resonant cavity structure, the resonant cavity can be reduced to one sixth or even one hundredth of the original size, greatly reducing the size of the resonant cavity.

[0070] In some optional embodiments, as shown in Figure 3 and Figure 4 optional, the resonant cavity subassembly 13 includes a resonant cavity body 131 and a capacitor 132, and the resonant cavity body 131 is provided with a resonant cavity. Optionally, the resonant cavity subassembly 13 can also include a connecting column 133, which is fixedly installed on the frame 11, and one end of the resonant cavity body 131 is fixedly connected with the connecting column 133.

[0071] Optionally, the resonant cavity body 131 is a hollow column, which is, for example but not limited to, a cylindrical column, a square column or a multi-edge column, and can be changed to other hollow column structures. The upper and lower parts of the hollow column are not sealed, and the sidewall of the hollow column is provided with a slot structure 1311. The resonant cavity in the application innovatively adopts a multi-stage combined structure, which is designed as a cylindrical slot and the upper and lower surfaces are kept unsealed. The multi-stage combined, cylindrical slot and unsealed structure not only effectively confines the electromagnetic field in the resonant cavity, significantly reduces the energy leakage, and guarantees the efficient transmission and reception of signals; the slot structure provides more space and path for the distribution and interaction of electromagnetic fields, optimizes the energy storage and transmission mechanism, so that energy can be more effectively stored and delivered, thereby significantly improving the electromagnetic coupling efficiency, which greatly increases the energy storage capacity of the resonant cavity and lays a foundation for high-strength signal transmission and reception. The problem of signal transmission attenuation and weak signal strength under the condition of unsuitable resonant cavity or use of large-size resonant cavity is solved, which ultimately makes the quantum bit signal strength insufficient and the signal-to-noise ratio not high, and cannot fully meet the demand of complex experiments for signals.

[0072] The chamber slot angle of the resonant cavity of the resonant cavity body 131 is crucial to the distribution and interaction of the electromagnetic field, so as to Figure 3 and Figure 4 For example, the cylindrical resonant cavity body 131 shown in the figure has a long slot structure 1311 from top to bottom, that is, the slot structure 1311 of the resonant cavity body 131 is an arc-shaped notch on the hollow cylindrical side wall, and the slot angle of the arc-shaped notch ranges from 5° to 60°. The slot angle refers to the included angle between the lines connecting the center of the hollow cylinder to the two ends of the slot structure on the cross section of the hollow cylinder. Referring to the cross section of the hollow cylinder shown in the figure, the lines connecting the center of the hollow cylinder to the two ends of the slot structure are OA and OB, and the slot angle a is the included angle between OA and OB. Figure 5

[0073] Optionally, the slot angle of the arc-shaped notch ranges from 5° to 15°, and the slot size is in this narrow and efficient range, which can obtain better resonance effect. This setting ensures that the performance of the resonant cavity is fully utilized to achieve optimal resonance efficiency.

[0074] Optionally, the resonant cavity body 131 is made of a metal material with a conductivity greater than a set conductivity threshold. The resonant cavity is entirely made of high-conductivity high-quality metal materials, and such material selection can excellently constrain the electromagnetic field and minimize energy leakage. The metal material is, for example but not limited to, copper or copper alloy material. Of course, the resonant cavity body 131 can also be made of a composite material instead of a high-conductivity metal material, but it may perform slightly worse than the high-conductivity metal material in terms of electromagnetic field constraint and energy leakage control, but it is still better than the existing resonant cavity in terms of resonance effect.

[0075] Optionally, a capacitor 132 can be arranged at the slot structure 1311 of the resonant cavity body 131. The capacitor 132 can be arranged one or more, for example Figure 3 and 4 As shown in the figure, the capacitors 132 are arranged side by side from top to bottom in the slot structure 1311, and the capacitance and installation position of the capacitors 132 are designed according to the required resonance frequency range. The arrangement of the capacitors 132 can further enhance the resonance effect, and the combination of capacitors 132 with different capacitances can make the resonance effect better. These capacitors 132 are accurately configured according to the characteristics and frequency requirements of the electromagnetic field, which can optimize the resonance performance under different working frequency bands and conditions, and the resonant frequency in the resonant cavity can be adjusted to a specific range through different combinations of capacitors 132, to ensure the stability and enhancement of the signal.

[0076] ​Two different test phase resonant cavity schemes are exemplified below, different cylindrical resonant cavity sizes are matched with different capacities of capacitors 132, spatial positions of capacitors 132, different resonant frequency points can be generated. It can be foreseen that there are many resonant cavity size matching capacitor 132 schemes.

[0077] Example scheme one:

[0078] The number of capacitors 132 in this scheme is 2 or 3, as shown in Figure 6 , including capacitors C1, C2, or including C1, C2, C3, different capacitor value combinations, and resonant frequency points and return loss under different combinations, as shown in Table 1.

[0079] Table 1

[0080]

[0081]

[0082] Example scheme two:

[0083] The number of capacitors in this scheme is 2, 3 or 4, as shown in Figure 7 , including capacitors C1, C4, or including capacitors C1, C2, C4, or including C1, C2, C3, C4, different capacitor value combinations, and resonant frequency points and return loss under different combinations, as shown in Table 2.

[0084] Table 2

[0085]

[0086] From the above scheme one and scheme two, it can be seen that different numbers of capacitors 132 and different capacitor value combinations can achieve different resonant frequency points, thereby further achieving flexible adjustment and free control of resonance.

[0087] In the above resonant cavity design scheme, the resonant cavity body 131 can be designed to be relatively small in size, that is, to meet the resonant requirements. It can be understood that the size of the resonant cavity body is designed according to the needs, and is not limited to the size exemplified below. The size exemplified below is to illustrate that the probe in the present application can be made relatively small compared with the probe of the prior art, and good photographic effects can be obtained. For example Figure 6 The overall size of the resonant cavity shown in Figure 7 , the overall size of the resonant cavity is 30mm high and 7mm in diameter. In general, the overall size of the resonant cavity body 131 in the present application is relatively small, with a height of 10-30mm and a radius of 3-10mm, that is, a good resonant effect can be obtained.

[0088] Regarding the shape design of the resonant cavity, in addition to designing from... Figure 3 and Figure 4 Besides the hollow cylindrical structure shown, other hollow cylindrical structures can also be designed, such as square or elliptical hollow cylindrical structures, with slotted structures 1311 provided on the hollow cylindrical structure. This may require re-optimization of the electromagnetic field distribution and energy storage mechanism, and may be slightly inferior to the cylindrical slotted structure in practical performance.

[0089] In summary, the resonant cavity structure design described above allows for a very small size, significantly saving space and adapting to more complex experimental environments. It also delivers excellent resonance performance, achieving signal enhancement of 20 dB or even higher, thus significantly improving detection sensitivity and accuracy. Furthermore, because its resonant cavity frequency is adjustable, it can be flexibly adjusted according to different sample characteristics and experimental conditions, providing more precise and reliable signal processing support for various complex experiments.

[0090] In some alternative embodiments, the frame 11 serves a supporting and protective function, and it may be configured as an open structure at the bottom, for example, but not limited to, [missing information]. Figure 1 The hollow three-dimensional structure shown can also be a hollow three-dimensional structure of other shapes. The frame 11 includes a top plate 111, side plates 112, and a support plate 113 extending from the side plates. The top plate 111 and support plate 113 can be used to fix and install the moving and fixed components in the adjustment mechanism 12, and also to fix and install the resonant cavity assembly 13 and the antenna assembly 14. Optionally, such as... Figure 1 As shown, frame 11 can be a single-layer structure or an inner and outer double-layer structure.

[0091] In some alternative embodiments, the moving component 122 includes an adjustment device and a moving plate 1222;

[0092] The movable plate 1222 is connected to the adjusting device, which is fixedly installed on the frame 11. The adjusting device is one of the following: threaded telescopic device, electric telescopic device, pneumatic telescopic device, hydraulic telescopic device, lever telescopic device, spring telescopic device, and worm gear telescopic device. The adjusting device drives the movable plate 1222 to move up and down to change the height of the movable plate 1222. Figure 1 The example used here is a threaded telescopic device as the adjusting device, in which case the adjusting device is the adjusting screw 1221.

[0093] Optionally, the fixing assembly 121 comprises a fixing rod 1211, and the moving assembly 122 comprises an adjusting screw rod 1221 and a moving plate 1222; the fixing rod 1211 is fixedly installed on the frame 11; the moving plate 1222 is fixedly connected with the adjusting screw rod 1221 and slidably connected with the fixing rod 1211; the adjusting screw rod 1221 is matched with a threaded hole on the frame 11 to adjust the height of the moving plate 1222.

[0094] When the adjusting mechanism 12 adopts the threaded telescopic device, as shown in Figure 1 Optionally, the top plate 111 is provided with a first fixing installation hole and an adjusting threaded hole, and the support plate 113 is provided with a second fixing installation hole; the fixing rod 1211 is fixedly connected to the frame 11 through the first fixing installation hole and the second fixing installation hole; the adjusting screw rod 1221 is installed on the frame 11 through the adjusting threaded hole, and the threaded hole and the installation hole are not marked in the figure.

[0095] In the resonant frequency adjustment mechanism of the resonant cavity, the prior art may rely on relatively fixed or limited adjustment means, and cannot realize continuous and fine adjustment of the resonant frequency, which is difficult to adapt to diversified experimental scenes and sample characteristics. The probe of the present application, the adjusting structure of which comprises an adjusting screw rod and a moving plate, can realize extremely accurate and flexible adjustment in a wide frequency range according to specific experimental requirements, adjust the resonant frequency to an ideal value, ensure that the resonant cavity is optimally matched with various complex and changeable experimental conditions and different types of samples, and greatly expand the application range and practical application value of the present application. In a smaller application space, the screw rod adjustment can accurately control the up-down position of the antenna 141 in the resonant cavity, and obtain a better adjustment effect. Of course, optionally, different adjusting mechanisms 12 can be designed according to the specific situation of the space, such as one of the adjusting mechanisms 12 and combinations exemplified above, as long as the up-down position adjustment of the antenna 141 can be realized,

[0096] Optionally, the antenna cable 142 in the antenna assembly 14 passes through a cable hole on the moving plate 1222, the antenna 141 is connected to the end of the antenna cable 142, and at least part of the antenna cable 142 extends into the resonant cavity of the resonant cavity body 131.

[0097] Optionally, the length of the antenna 141 in the antenna assembly 14 extending into the resonant cavity of the resonant cavity body is adjusted by the moving assembly 122 to change the effective cavity size of the resonant cavity.

[0098] The probe for nuclear magnetic resonance technology can be applied to a nuclear magnetic resonance quantum computer, and signal strength of the nuclear magnetic resonance quantum computer is improved. Through reasonable layout of the resonant cavity body 131, the antenna cable 142 and the antenna 141 and the like, electromagnetic interference and noise problems caused by unreasonable internal circuit layout of the existing probe are solved. The optimized circuit layout and shielding measures effectively reduce interference and noise, further improve the quality and stability of the signal, reduce experimental errors, and improve the repeatability and reliability of experimental data.

[0099] In particular, in the key link of signal processing, a major breakthrough is achieved by introducing advanced and unique resonant cavity technology. Through clever resonant cavity structure design, not only is it easy to implement, but it can also stably operate in various complex experimental environments. The resonant frequency has high flexibility and can be adjusted according to specific experimental requirements, thereby perfectly adapting to various types of samples and complex and diversified experimental conditions. Whether the characteristics of the sample change or the experimental environment differs, the resonant frequency can be adjusted to effectively enhance the transmission of the radio frequency signal and the reception of the nuclear magnetic resonance quantum bit signal, thereby providing high-quality and stable signal support for experiments.

[0100] Moreover, the resonant effect is extremely good, can significantly enhance the transmission strength of the radio frequency signal, greatly improve the reception quality of the nuclear magnetic resonance quantum bit signal, and further significantly improve the signal-to-noise ratio. This outstanding performance improvement provides highly accurate, stable and reliable data support for in-depth research in the field of quantum computing, and effectively promotes the development and progress of related research.

[0101] Based on the same inventive concept, the utility model embodiment further provides a quantum computer, as shown in the figure, comprising the probe 1 for nuclear magnetic resonance technology. Figure 8 As shown in the figure, the probe 1 for nuclear magnetic resonance technology comprises a resonant cavity body 131, an antenna cable 142 and an antenna 141.

[0102] The probe 1 is used for exciting electromagnetic waves in the resonant cavity based on the received radio frequency transmission signal, and returning a radio frequency feedback signal based on electromagnetic waves excited by a nuclear magnetic sample in the resonant cavity.

[0103] Optionally, the probe 1 is specifically used for: receiving a radio frequency transmission signal sent by a transmitter, transmitting the radio frequency transmission signal to the antenna 141, exciting electromagnetic waves in the resonant cavity of the resonant cavity body 131 through the antenna 141; after the nuclear magnetic sample in the resonant cavity is excited by the electromagnetic waves, a same-frequency nuclear magnetic signal generated by the nuclear magnetic sample is oscillated in the resonant cavity, the nuclear magnetic signal excited by the nuclear magnetic sample in the resonant cavity is received through the antenna 141, and a radio frequency feedback signal is obtained and sent to a receiver; wherein the electromagnetic waves excited by the radio frequency signal and the same-frequency nuclear magnetic signal generated by the nuclear magnetic sample excited by the electromagnetic waves are oscillated in the resonant cavity and enhanced.

[0104] Unless specifically stated otherwise, terms such as processing, computing, calculating, determining, displaying, and the like, can refer to an action or process of one or more processing or computing systems, or similar devices, that manipulate or transform data represented as physical (e.g., electronic) quantities within the systems' registers or memories into other data similarly represented as physical quantities within the systems' memories, registers or other such information storage, transmission or display devices. The terms "information," "data," "instructions," “command,” “signal,” “bit,” “symbol,” and “chip” refer to physical quantities that can be measured, processed, transformed, or otherwise manipulated by a processing system.

[0105] It should be understood that the specific order or hierarchy of steps in the processes disclosed are examples of exemplary approaches. Based upon design preferences, it should be understood that the specific order or hierarchy of steps in the processes can be re-arranged while remaining within the scope of the present disclosure. The accompanying method claims present elements of the various steps in a sample order, and are not meant to be limited to the specific order or hierarchy presented.

[0106] In the above detailed description, various features are grouped together in single embodiments for the purpose of streamlining the disclosure. This disclosed approach is not to be interpreted as reflecting an intention that the embodiments of the claimed subject matter require more features than are expressly recited in each claim. Rather, as the appended claims reflect, inventive subject matter lies in fewer than all features of the disclosed single embodiments. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate preferred embodiment.

[0107] Those skilled in the art will further appreciate that the various illustrative logical blocks, modules, circuits, and algorithm steps described in connection with the embodiments disclosed herein can be implemented as electronic hardware, computer software, or combinations of both. To clearly illustrate this interchangeability of hardware and software, various illustrative components, blocks, modules, circuits, and steps have been described above generally in terms of their functionality. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the overall system. Skilled artisans can implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present disclosure.

[0108] The steps of a method or algorithm described in connection with the embodiments disclosed herein can be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. A software module can reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such that the processor can read information from, and write information to, the storage medium. In the alternative, the storage medium can be integral to the processor. The processor and the storage medium can reside in an ASIC. The ASIC can reside in a user terminal. In the alternative, the processor and the storage medium can reside as discrete components in a user terminal.

[0109] For a software implementation, the techniques described herein can be implemented with modules (e.g., procedures, functions, and so on) that perform the functions described herein. The software codes can be stored in memory units and executed by processors. The memory unit can be implemented within the processor or external to the processor, in which case it can be communicatively coupled to the processor via various means as is known in the art.

[0110] The above description includes one or more examples of the embodiments. Of course, not all possible combinations of components or methods described above can be claimed as embodiments. One of ordinary skill in the art can recognize that modifications and variations of the described embodiments can be made without departing from the scope of the present disclosure. It is therefore intended that the embodiments described herein be considered in all respects as illustrative and not restrictive, particularly as numerous modifications and further embodiments can become apparent to those skilled in the art. Accordingly, the scope of the present disclosure is intended to be defined by the following claims rather than the description. Moreover, the use of the terms "first", "second", etc. do not denote any order or importance, but rather the terms are used to distinguish one element from another. Furthermore, the use of the terms "including", "containing", etc. are meant to encompass the terms "consisting of" and / or "consisting essentially of". Moreover, the use of the term "or" is meant to encompass "and / or", unless otherwise indicated.

Claims

1. A probe for nuclear magnetic resonance (NMR) technology, characterized in that, include: Frame, adjustment mechanism, resonant cavity assembly, and antenna assembly; The resonant cavity assembly is fixed on the frame. The resonant cavity assembly includes a resonant cavity body and at least one capacitor. The resonant cavity body is a hollow structure with a slotted structure on its side wall. The capacitor is disposed in the slotted structure. The adjustment mechanism includes a fixed component and a movable component. The fixed component is fixedly installed on the frame, and the movable component is movably connected to the frame. The antenna assembly includes an antenna, an antenna cable, and a resonant circuit connected in sequence. The antenna cable is fixedly connected to the movable component, and the antenna extends at least partially into the resonant cavity of the resonant cavity body. The resonant circuit is used to process the transmitted signal provided to the antenna and / or the received signal returned by the antenna.

2. The probe as described in claim 1, characterized in that, The fixing component includes a fixing rod, and the moving component includes an adjusting screw and a moving plate; The fixing rod is fixedly installed on the frame; The movable plate is fixedly connected to the adjusting screw and slidably connected to the fixed rod; The adjusting screw engages with the threaded hole on the frame to adjust the height of the moving plate.

3. The probe as described in claim 2, characterized in that, The frame includes a top plate, side plates, and a support plate extending from the side plates. The top plate is provided with a first fixing hole and an adjusting threaded hole, and the support plate is provided with a second fixing hole. The fixing rod is fixedly connected to the frame through the first fixing mounting hole and the second fixing mounting hole; the adjusting screw is installed on the frame through the adjusting threaded hole.

4. The probe as described in claim 2, characterized in that, The antenna cable passes through the cable hole on the movable plate, the antenna is connected to the end of the antenna cable, and at least partially extends into the resonant cavity of the resonant cavity body.

5. The probe as described in claim 1, characterized in that, The resonant cavity assembly also includes a connecting post, which is fixedly installed on the frame, and one end of the resonant cavity body is fixedly connected to the connecting post.

6. The probe as described in claim 1, characterized in that, The resonant cavity body is a hollow cylinder, which can be a round cylinder, a square cylinder, or a polygonal prism. The hollow cylinder is not sealed at the top and bottom, and the side walls of the hollow cylinder are provided with a slotted structure.

7. The probe as described in claim 6, characterized in that, The slotted structure of the resonant cavity body is an arc-shaped notch on the side wall of a hollow cylinder, and the slotting angle of the arc-shaped notch is in the range of 5° to 60°. The slotting angle refers to the angle between the lines connecting the center of the hollow cylinder to the two ends of the slotted structure on the cross-section of the cylinder.

8. The probe as described in claim 7, characterized in that, The grooving angle of the arc-shaped notch ranges from 5° to 15°.

9. The probe as described in claim 1, characterized in that, The resonant cavity body is made of a metal material with a conductivity greater than a set conductivity threshold.

10. The probe as described in claim 1, characterized in that, The capacitors are arranged side by side from top to bottom in the slotted structure, and the capacitance and installation position of the capacitors are designed according to the resonant frequency range required.

11. The probe as described in claim 1, characterized in that, The movable component includes an adjustment device and a movable plate; The movable plate is connected to the adjusting device, which is fixedly installed on the frame. The adjusting device is one of the following: threaded telescopic device, electric telescopic device, pneumatic telescopic device, hydraulic telescopic device, lever telescopic device, spring telescopic device, and worm gear telescopic device. The adjusting device moves the movable plate up and down to change the height of the movable plate.

12. The probe as described in any one of claims 1-11, characterized in that, The effective cavity size of the resonant cavity can be changed by adjusting the length of the antenna extending into the resonant cavity body in the antenna assembly through the moving component.

13. A quantum computer, characterized in that, include: The probe for nuclear magnetic resonance technology as described in any one of claims 1-11; The probe is used to excite electromagnetic waves in a resonant cavity based on the received radio frequency transmission signal, and to return a radio frequency feedback signal based on the electromagnetic waves excited by the nuclear magnetic sample in the resonant cavity.

14. The quantum computer as described in claim 13, characterized in that, The probe is specifically used for: receiving radio frequency transmission signals sent by the transmitter, transmitting the radio frequency transmission signals to the antenna, and exciting electromagnetic waves in the resonant cavity of the resonant cavity body through the antenna; receiving the nuclear magnetic signal excited by the nuclear magnetic sample in the resonant cavity through the antenna, obtaining a radio frequency feedback signal, and sending it to the receiver; wherein, the electromagnetic waves excited by the radio frequency signal and the nuclear magnetic signal generated by the nuclear magnetic sample after being excited by the electromagnetic waves will oscillate and be enhanced in the resonant cavity.

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