Signal tuning circuit, detection device and nuclear magnetic resonance quantum computer

Abstract

The embodiment of the present application provides a signal tuning circuit, a detection device and a nuclear magnetic resonance quantum computer. The signal tuning circuit is connected between a main control board and a probe. The main control board is used for generating a control signal, receiving and processing a nuclear magnetic signal detected by the probe. The signal tuning circuit comprises: a signal receiving circuit, used for receiving a control signal of a preset frequency generated by the main control board; a signal transmission circuit, coupled with the signal receiving circuit, used for transmitting the control signal of the preset frequency; a first signal response circuit, coupled with the signal transmission circuit, used for responding to the control signal of the first preset frequency, and detecting a sample to be detected by using the control signal of the first preset frequency; and a second signal response circuit, coupled with the first signal response circuit, used for responding to the control signal of the second preset frequency, and detecting the sample to be detected by using the control signal of the second preset frequency. The embodiment of the present application can reduce the setting of supporting components and devices, and reduce the volume of the detection device.

Description

Technical Field

[0001] This application relates to the field of quantum computing technology, and in particular to a signal tuning circuit, a detection device, and a nuclear magnetic resonance quantum computer. Background Technology

[0002] In existing nuclear magnetic resonance quantum computers, transmitting two control signals of different frequencies to the probe requires two signal tuning circuits to transmit the two control signals of different frequencies respectively.

[0003] like Figure 4 and Figure 5 As shown, Figure 4 A schematic diagram of the circuit structure of a prior art signal tuning circuit is shown. For example... Figure 4 As shown, in the prior art, the probe receives two control signals of different frequencies through two signal tuning circuits. Each control signal is transmitted to the inductor 105 through a signal receiving circuit (101, 109), a matching circuit (102, 108), and a frequency modulation circuit (103, 107). Furthermore, in order to prevent the two control signals of different frequencies from interfering with the control signal of another frequency through the probe coil, a band-stop filter (104, 106) needs to be added on both sides of the inductor 105 to block the incoming signals.

[0004] Figure 5 This diagram illustrates the component connections of a prior art detection device. Two signal conversion circuit ports are required between the probe and the main control board to process the signals transmitted by the two signal tuning circuits respectively.

[0005] Each of the two signal tuning circuits requires corresponding additional components, such as two mainboard pulse emission ports and two mainboard NMR signal acquisition ports corresponding to the two signal tuning circuits. This approach results in a relatively large overall size of the probe, which is detrimental to the miniaturization of NMR quantum computers. Summary of the Invention

[0006] This application provides a signal tuning circuit, a detection device, and a nuclear magnetic resonance quantum computer to reduce the number of supporting components, reduce the size of the detection device, and facilitate the miniaturization of nuclear magnetic resonance quantum computers.

[0007] As a first aspect of the embodiments of this application, this application provides a signal tuning circuit connected between a main control board and a probe. The main control board is used to generate control signals and receive and process the NMR signals detected by the probe. The signal tuning circuit includes:

[0008] The signal receiving circuit is used to receive control signals of a preset frequency generated by the main control board; the preset frequency includes a first preset frequency and a second preset frequency.

[0009] The signal transmission circuit, coupled to the signal receiving circuit, is used to transmit control signals at a preset frequency.

[0010] The first signal response circuit, coupled to the signal transmission circuit, is used to respond to a control signal of a first preset frequency, so that the probe detects the sample to be detected at the control signal of the first preset frequency.

[0011] The second signal response circuit, coupled to the first signal response circuit, is used to respond to a control signal of a second preset frequency, so that the probe detects the sample to be detected at the control signal of the second preset frequency.

[0012] In one implementation, the input terminal of the signal receiving circuit is connected to the signal output terminal of the main control board, and the output terminal of the signal receiving circuit is grounded.

[0013] The signal transmission circuit includes:

[0014] The first matching capacitor unit is coupled to the signal receiving circuit and is used for filtering, so that the control signal of the first preset frequency and the control signal of the second preset frequency can pass through.

[0015] The first frequency modulation capacitor unit is used to allow control signals of the first preset frequency and the second preset frequency to pass through in a manner with minimal loss. The first frequency modulation capacitor unit is coupled to the first matching capacitor unit and is also coupled to ground.

[0016] In one embodiment, the first signal response circuit includes a first inductor coupled to a signal transmission circuit.

[0017] In one embodiment, the second signal response circuit includes:

[0018] The second inductor is coupled to the signal response circuit and also to ground.

[0019] In one embodiment, the physical parameters of the second inductor are determined according to a second preset frequency, and the physical parameters include the inductance length, inductance diameter, and number of turns of the second inductor.

[0020] In one embodiment, the second signal response circuit further includes:

[0021] The second frequency modulation capacitor unit is coupled to the second inductor and ground, and is used to allow the control signal of the second preset frequency to pass through in a way with minimal loss.

[0022] The second matching capacitor unit is used for filtering, allowing the control signal of the second preset frequency to pass through. The second matching capacitor unit is coupled with the second frequency modulation capacitor unit.

[0023] In one embodiment, the second signal response circuit further includes a load resistor coupled to a second matching capacitor unit and coupled to ground.

[0024] As a second aspect of the present application, the present application provides a detection device, including: a main control board, a signal tuning circuit of any of the above embodiments, and a probe;

[0025] The main control board is used to generate control signals and receive and process the NMR signals detected by the probe;

[0026] The signal tuning circuit is connected between the main control board and the probe to transmit control signals to the probe;

[0027] The probe is connected to the main control board via a signal tuning circuit and is used to detect the sample to be detected.

[0028] In one embodiment, the detection device further includes a circuit board for mounting a signal tuning circuit; the circuit board is mounted inside the probe; the circuit board includes:

[0029] The first area is used to install signal receiving circuits and signal transmission circuits;

[0030] The second area is used to install the first signal response circuit;

[0031] The third area is used to install the second signal response circuit;

[0032] The first and third regions are located on opposite sides of the second region.

[0033] As a third aspect of the embodiments of this application, the embodiments of this application provide a nuclear magnetic resonance quantum computer, characterized in that it includes: a detection device and a control device according to any of the above embodiments, wherein the control device is connected to the main control board.

[0034] The embodiments of this application adopt the above technical solution, which transmits two control signals of different preset frequencies through a signal transmission circuit, and responds to the control signal of the first preset frequency through a first signal response circuit and the control signal of the second preset frequency through a second signal response circuit. The second signal response circuit is coupled to the first signal response circuit, so that the probe can receive two signals of different frequencies at the port of a signal tuning circuit, reducing the configuration of supporting components, reducing the size of the detection device, and facilitating the miniaturization of nuclear magnetic resonance quantum computers.

[0035] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of this application will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0036] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the various drawings denote the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings depict only some embodiments disclosed in this application and should not be construed as limiting the scope of this application.

[0037] Figure 1 A block diagram of a signal tuning circuit according to an embodiment of this application is shown.

[0038] Figure 2 A schematic diagram of the circuit structure of a signal tuning circuit according to an embodiment of this application is shown.

[0039] Figure 3 A schematic diagram showing the component connections of a detection device according to an embodiment of this application is provided.

[0040] Figure 4 A schematic diagram of the circuit structure of a prior art signal tuning circuit is shown.

[0041] Figure 5 A schematic diagram showing the component connections of a prior art detection device is provided.

[0042] Figure 6 A schematic diagram of the partitioning of a circuit board according to an embodiment of this application is shown. Detailed Implementation

[0043] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this application. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0044] The signal tuning circuit of this embodiment can be used in a nuclear magnetic resonance quantum computer to transmit signals to a probe, enabling the probe to detect the sample to be detected with a control signal of a specific frequency. In this embodiment, the signal tuning circuit is connected between the main control board and the probe. The main control board generates control signals and receives detection signals, and the probe is connected to the main control board through the signal tuning circuit.

[0045] Figure 1 A block diagram of a signal tuning circuit according to an embodiment of this application is shown. Figure 2 A schematic diagram of the circuit structure of a signal tuning circuit according to an embodiment of this application is shown. Figure 1 and Figure 2As shown, the signal tuning circuit in this embodiment is connected between the main control board and the probe. The main control board generates control signals and receives and processes the NMR signals detected by the probe. The signal tuning circuit includes: a signal receiving circuit 201, a signal transmission circuit, a first signal response circuit, and a second signal response circuit. The signal receiving circuit 201 receives control signals of a preset frequency generated by the main control board; the preset frequency includes a first preset frequency and a second preset frequency.

[0046] The signal transmission circuit is coupled to the signal receiving circuit 201 and is used to transmit control signals of a preset frequency.

[0047] The first signal response circuit is coupled to the signal transmission circuit and is used to respond to a control signal of a first preset frequency so that the probe detects the sample to be detected at the control signal of the first preset frequency.

[0048] The second signal response circuit is coupled to the first signal response circuit and is used to respond to a control signal of a second preset frequency so that the probe detects the sample to be detected at the control signal of the second preset frequency.

[0049] This application embodiment transmits two control signals of different preset frequencies through a signal transmission circuit, and responds to the control signal of the first preset frequency through a first signal response circuit and the control signal of the second preset frequency through a second signal response circuit. The second signal response circuit is coupled to the first signal response circuit, so that the probe can receive two signals of different frequencies at the port of a signal tuning circuit, reducing the configuration of supporting components, reducing the size of the detection device, and facilitating the miniaturization of nuclear magnetic resonance quantum computers.

[0050] In one embodiment, the input terminal of the signal receiving circuit 201 is connected to the signal output terminal of the main control board, and the output terminal of the signal receiving circuit 201 is connected to the input terminal of the signal transmission circuit; so that the control signal generated by the main control board can be transmitted to the signal transmission circuit 202 through the signal receiving circuit 201.

[0051] In one embodiment, the signal transmission circuit includes a first matching capacitor unit 202 and a first frequency modulation capacitor unit 203.

[0052] The first matching capacitor unit 202 is coupled to the signal receiving circuit 201. The first matching capacitor unit 202 is used for filtering so that the control signal of the first preset frequency and the control signal of the second preset frequency can pass through.

[0053] The first matching capacitor unit 202 may be a circuit comprising one or more capacitors connected together, so that the control signal of the first preset frequency and the control signal of the second preset frequency can pass through.

[0054] In one example, the first matching capacitor unit 202 can be a variable capacitor.

[0055] The first frequency modulation capacitor unit 203 is used to allow the control signal of the first preset frequency and the control signal of the second preset frequency to pass through in a manner with minimal loss. The first frequency modulation capacitor unit 203 is coupled to the first matching capacitor unit 202 and is coupled to ground.

[0056] The first frequency modulation capacitor unit 203 may be a circuit comprising one or more capacitors connected together, wherein the control signal of the first preset frequency and the control signal of the second preset frequency pass through in a manner with minimal loss.

[0057] In one example, the first frequency modulation capacitor unit 203 may be composed of three capacitors connected in parallel.

[0058] This embodiment of the application transmits two different preset frequency control signals through a signal transmission circuit composed of a first matching capacitor unit 202 and a first frequency modulation capacitor unit 203. This allows the probe to receive two different frequency control signals through a single signal port for detection. While meeting detection requirements, this also reduces the size of the probe.

[0059] In one embodiment, the first signal response circuit includes a first inductor 204, which is coupled to a signal transmission circuit. Specifically, the first inductor 204 is coupled to a first frequency modulation capacitor unit 203.

[0060] In this embodiment, the first inductor 204 and the signal transmission circuit form an LC resonant circuit, so that the control signal of the first preset frequency can be transmitted to the probe, so that the probe can perform detection with the control signal of the first preset frequency.

[0061] In one embodiment, the second signal response circuit includes a second inductor 205. The second inductor 205 is coupled to the signal response circuit and to ground.

[0062] Specifically, the second inductor 205 is coupled to the first inductor 204. The second inductor 205 is used to respond to a control signal of a second preset frequency, so that the control signal of the second preset frequency can be transmitted to the probe, so that the probe can perform detection with the control signal of the second preset frequency.

[0063] In this embodiment, two inductors, a first inductor 204 and a second inductor 205, receive control signals of different frequencies, allowing the probe to detect the sample to be detected using two different frequency control signals through a signal tuning circuit.

[0064] In one embodiment, the physical parameters of the second inductor 205 are determined according to a second preset frequency, and the physical parameters include the inductance length, inductance diameter and number of turns of the second inductor 205.

[0065] The relationship between the physical parameters of the second inductor 205 and the second preset frequency is as follows:

[0066] The relationship between the second preset frequency and the inductance of the second inductor 205 is as follows:

[0067]

[0068] Where f is the second preset frequency, in Hertz (Hz); L is the inductance of the second inductor 205, in Henry (H); and C is the capacitance, in Farad (F).

[0069] The physical parameter relationship of the second inductor 205 is as follows:

[0070] L = r 2 N 2 / (9r+10l) (2)

[0071] Where L is the inductance of the second inductor 205, in Henry (µH); r is the inductance radius, in inches; l is the inductance length, in inches; and N is the number of turns.

[0072] In this embodiment of the application, the physical parameters of the second inductor 205 can be determined according to the second preset frequency by using equations (1) and (2), so that the second signal response circuit can accurately respond to the control signal of the second preset frequency.

[0073] For example, the physical parameters of the first inductor 204 can also be determined by equations (1) and (2).

[0074] In one embodiment, the second signal response circuit further includes a second frequency modulation capacitor unit 206 and a second matching capacitor unit 207.

[0075] The second frequency modulation capacitor unit 206 is coupled to the second inductor 205 and is coupled to ground so that the control signal for the second preset frequency passes through in a manner with minimal loss.

[0076] The second frequency modulation capacitor unit 206 may be a circuit comprising one or more capacitors connected together, so that the control signal of the second preset frequency received by the second inductor 205 passes through in a manner with minimal loss.

[0077] The second matching capacitor unit 207 is used for filtering, so that the control signal of the second preset frequency can pass through. The second matching capacitor unit 207 is coupled with the second frequency modulation capacitor unit 206.

[0078] The second matching capacitor unit 207 may be a circuit comprising one or more capacitors connected together, so that a control signal of the second preset frequency can pass through.

[0079] In this embodiment, a control signal of a second preset frequency is transmitted through the second matching capacitor unit 207 and the second frequency modulation capacitor unit 206, forming an LC resonant circuit with the second inductor 205. This allows the control signal of the second preset frequency to be transmitted to the probe, facilitating detection by the probe using the control signal of the second preset frequency.

[0080] In this embodiment, the circuit structure of the second frequency modulation capacitor unit 206 may be different from the circuit structure of the first frequency modulation capacitor unit 203; the circuit structure of the second matching capacitor unit 207 may also be different from the circuit structure of the first matching capacitor unit 202.

[0081] In one embodiment, the second signal response circuit further includes a load resistor 208, which is coupled to the second matching capacitor unit 207 and to ground.

[0082] In this embodiment, the load resistor 208 can absorb the signal leaked during the transmission of the control signal of the second preset frequency, and avoid the reflected signal of the control signal of the second preset frequency from interfering with the NMR signal of the second preset frequency received by the probe, so that the probe can receive the NMR signal of the second preset frequency more accurately.

[0083] This application also provides a detection device that employs the aforementioned signal tuning circuit, enabling the probe to receive two signals of different frequencies at a single port of the signal tuning circuit. The probe is connected to the first inductor 204 of the signal tuning circuit.

[0084] The detection device according to this application includes: a main control board, a signal tuning circuit according to any of the above embodiments, and a probe. The main control board is used to generate control signals, receive and process the NMR signals detected by the probe; the signal tuning circuit is connected between the main control board and the probe; the probe is connected to the main control board through the signal tuning circuit.

[0085] The embodiments of this application use the signal tuning circuit of any of the above embodiments to connect the probe and the main control board, so that the probe can be connected to the main control board through a signal port, reducing the setting of supporting components and reducing the size of the detection device.

[0086] In one example, such as Figure 3 As shown, the detection device in this embodiment further includes a signal conversion circuit, which is connected between the main control board and the signal tuning circuit. This signal conversion circuit is used to convert the control signal generated by the main control board and the received NMR signal detected by the probe. The signal conversion circuit is used to perform signal amplification and noise reduction processing.

[0087] The detection device in this application embodiment uses a signal tuning circuit to transmit multiple preset frequency signals. Correspondingly, only a signal conversion circuit needs to be configured to perform signal conversion processing between the signal tuning circuit and the main control board.

[0088] In one embodiment, the detection device further includes a circuit board for mounting a signal tuning circuit; the circuit board is mounted inside the probe.

[0089] Figure 6 A schematic diagram of the partitioning of a circuit board according to an embodiment of this application is shown. Figure 6 As shown, the circuit board in this embodiment includes a first region 300, a second region 400, and a third region 500. The first region 300 is used to mount a signal receiving circuit and a signal transmitting circuit; the second region 400 is used to mount a first signal response circuit; and the third region 500 is used to mount a second signal response circuit. The first region 300 and the third region 500 are respectively disposed on opposite sides of the second region 400.

[0090] The circuit board in this embodiment is partitioned so that the first inductor 204 and the second inductor 205 can be spaced apart to avoid affecting the NMR signal of the probe.

[0091] Other components of the detection device in the above embodiments can be derived from various technical solutions that are now and will be known to those skilled in the art, and will not be described in detail here.

[0092] This application also provides a nuclear magnetic resonance quantum computer, including: a detection device and a control device according to any of the above embodiments, wherein the control device is connected to the main control board.

[0093] Other configurations of the nuclear magnetic resonance quantum computer in the above embodiments can be adopted from various technical solutions now and in the future known to those skilled in the art, and will not be described in detail here.

[0094] The control device may include a communication interface for communicating with the signal tuning circuitry inside the probe or with external devices to exchange and transmit data. The control device may include a memory and a processor, with the memory storing instructions that can be executed by the processor. When the processor executes these instructions, it performs the detection of the sample to be tested. There may be one or more memories and processors.

[0095] The aforementioned processor can be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. General-purpose processors can be microprocessors or any conventional processor. It is worth noting that the processor can be a processor supporting the Advanced Reduced Instruction Set Computing (RISC) machine (ARM) architecture.

[0096] Optionally, the aforementioned memory may include a program storage area and a data storage area, wherein the program storage area may store the operating system and applications required for at least one function; the data storage area may store data created based on the use of the control device, etc. Furthermore, the memory may include high-speed random access memory, and may also include non-transitory memory, such as at least one disk storage device, flash memory device, or other non-transitory solid-state storage device. In some embodiments, the memory may optionally include memory remotely located relative to the processor, and these remote memories can be connected to the control device via a network. Examples of such networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.

[0097] In the description of this specification, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0098] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0099] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0100] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0101] It should be noted that although the steps of the method in this application are described in a specific order in the accompanying drawings, this does not require or imply that these steps must be performed in that specific order, or that all the steps shown must be performed to achieve the desired result. Additional or alternative steps may be omitted, multiple steps may be combined into one step, and / or one step may be broken down into multiple steps. The above drawings are merely illustrative of the processes included in the method according to exemplary embodiments of this application and are not intended to be limiting. It is readily understood that the processes shown in the above drawings do not indicate or limit the temporal order of these processes. Furthermore, it is readily understood that these processes may be performed synchronously or asynchronously in multiple modules, for example.

[0102] The foregoing disclosure provides many different implementations or examples for carrying out different structures of this application. To simplify the disclosure, specific examples of components and arrangements are described above. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various implementations and / or arrangements discussed.

[0103] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this application, and these should all be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A signal tuning circuit connected between a main board for generating a control signal and receiving and processing a nuclear magnetic signal detected by a probe and the probe, characterized in that, The signal tuning circuit includes: ​ A signal receiving circuit is used to receive control signals of a preset frequency generated by the main control board; the preset frequency includes a first preset frequency and a second preset frequency. A signal transmission circuit, coupled to the signal receiving circuit, is used to transmit the control signal of the preset frequency; A first signal response circuit, coupled to the signal transmission circuit, is used to respond to a control signal of the first preset frequency, so that the probe detects the sample to be detected at the control signal of the first preset frequency. The second signal response circuit, coupled to the first signal response circuit, is used to respond to the control signal of the second preset frequency, so that the probe detects the sample to be detected at the control signal of the second preset frequency. The signal transmission circuit includes: a first frequency modulation capacitor unit, used for the control signal of the first preset frequency and the control signal of the second preset frequency to pass through in a manner with minimal loss; the first frequency modulation capacitor unit is coupled to a first matching capacitor unit and is coupled to ground. The first signal response circuit includes a first inductor, which is coupled to the signal transmission circuit. The second signal response circuit includes: a second inductor, which is coupled to the first signal response circuit and to ground; The first inductor is coupled to the first frequency modulation capacitor unit, and the second inductor is coupled to the first inductor.

2. The signal tuning circuit of claim 1, wherein, The input terminal of the signal receiving circuit is connected to the signal output terminal of the main control board, and the output terminal of the signal receiving circuit is grounded. The signal transmission circuit further includes: The first matching capacitor unit is coupled to the signal receiving circuit and is used for filtering, so that the control signal of the first preset frequency and the control signal of the second preset frequency can pass through.

3. The signal tuning circuit of claim 1, wherein, The physical parameters of the second inductor are determined according to the second preset frequency, and the physical parameters include the inductance length, inductance diameter and number of turns of the second inductor.

4. The signal tuning circuit according to claim 1, characterized in that, The second signal response circuit further includes: The second frequency modulation capacitor unit is coupled to the second inductor and to ground, and is used to allow the control signal of the second preset frequency to pass through in a manner with minimal loss. The second matching capacitor unit is used for filtering, allowing the control signal of the second preset frequency to pass through. The second matching capacitor unit is coupled to the second frequency modulation capacitor unit.

5. The signal tuning circuit according to claim 4, characterized in that, The second signal response circuit further includes a load resistor, which is coupled to the second matching capacitor unit and to ground.

6. A detection device, characterized in that, include: The main control board, the signal tuning circuit and the probe as described in any one of claims 1 to 5; The main control board is used to generate control signals and receive and process the nuclear magnetic resonance signals detected by the probe. The signal tuning circuit is connected between the main control board and the probe, and is used to transmit the control signal to the probe; The probe is connected to the main control board via the signal tuning circuit and is used to detect the sample to be detected.

7. The detection device according to claim 6, characterized in that, The detection device further includes a circuit board for mounting the signal tuning circuit; the circuit board is mounted inside the probe; the circuit board includes: The first area is used to install the signal receiving circuit and the signal transmitting circuit; The second area is used to install the first signal response circuit; The third area is used to install the second signal response circuit; The first region and the third region are respectively located on opposite sides of the second region.

8. A nuclear magnetic resonance quantum computer, characterized in that, include: The detection device and control equipment as described in any one of claims 6 to 7, wherein the control equipment is connected to the main control board.

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