Superconducting single photon readout imaging system based on capacitance feedback

Abstract

The invention discloses a superconducting single-photon readout imaging system based on capacitance feedback, and the system comprises a superconducting single-photon detector, a readout imaging system, a capacitance feedback module, a conversion module, an amplification processing module, a photon counting module, a readout imaging module, a capturing module, a carding module, and a sorting module. The beneficial effects of the invention are that by adding the capacitance feedback module, an output signal is fed back to the input end of the circuit through a capacitance element, and the output signal is controlled by changing the phase and the amplitude of the input signal, so that the output signal is reduced or eliminated, and the stability, the sensitivity and the reliability of the circuit are improved; by adding the conversion module, the amplification processing module, the photon counting module and the readout imaging module, a plurality of modules can be matched for use, an optical device is utilized to convert a single photon into an electronic signal, and then the electronic signal is matched with the photon counting module to generate a photoelectric reaction with a photosensitive element.

Description

Technical Field

[0001] The present invention relates to the technical field of superconducting single photons, and specifically to a superconducting single photon readout imaging system based on capacitive feedback. Background Technique

[0002] Superconducting single photons are used in superconducting single photon detectors, which are devices that use the characteristics of superconducting materials to detect single photons. It generates a resistance state change by absorbing photons, thereby affecting the circuit current distribution, and detects photons by reading the current change through a low-noise amplifier. Currently, when superconducting single photons feedback the output signal to the circuit input end through a capacitive element by capacitive feedback, the output signal is controlled by changing the phase and amplitude of the input signal, thereby reducing or eliminating the output signal. However, the structure is relatively simple during readout imaging. As the number of SNSPD pixels increases, the power consumption will increase, which will affect the subsequent readout imaging work and make the readout imaging more difficult. Summary of the Invention

[0003] The purpose of the present invention is to provide a superconducting single photon readout imaging system based on capacitive feedback to solve the problem proposed in the above background technique that currently, when superconducting single photons feedback the output signal to the circuit input end through a capacitive element by capacitive feedback, the output signal is controlled by changing the phase and amplitude of the input signal, thereby reducing or eliminating the output signal. However, the structure is relatively simple during readout imaging. As the number of SNSPD pixels increases, the power consumption will increase, which will affect the subsequent readout imaging work and make the readout imaging more difficult.

[0004] To achieve the above purpose, the present invention provides the following technical solution: A superconducting single photon readout imaging system based on capacitive feedback, including: a superconducting single photon detector, a readout imaging system, a capacitive feedback module, a conversion module, an amplification processing module, a photon counting module, a readout imaging module, a capture module, a sorting module, and an arrangement module. The output end of the capacitive feedback module is unidirectionally connected to the input end of the superconducting single photon detector. The superconducting single photon detector is bidirectionally connected to the readout imaging system. The output end of the readout imaging system is unidirectionally connected to the input end of the conversion module. The output end of the conversion module is unidirectionally connected to the input end of the amplification processing module. The amplification processing module is bidirectionally connected to the photon counting module. The output end of the amplification processing module is unidirectionally connected to the input end of the readout imaging module. The output end of the readout imaging module is unidirectionally connected to the input end of the superconducting single photon detector. The capture module is bidirectionally connected to the capacitive feedback module. The sorting module is bidirectionally connected to the capture module. The arrangement module is bidirectionally connected to the sorting module;

[0005] The readout imaging system is used for superconducting single photon readout imaging based on capacitive feedback;

[0006] The capacitance feedback module is used to feedback the output signal to the circuit input end through a capacitance element, control the output signal by changing the phase and amplitude of the input signal, thereby reducing or eliminating the output signal, and improving the stability, sensitivity and reliability of the circuit;

[0007] The conversion module is used to convert a single photon into an electronic signal by using an optical device;

[0008] The amplification processing module is used to cooperate with the photon counting module to generate a photoelectric reaction with the photosensitive element, and the generated electronic signal is amplified and processed by an amplifier;

[0009] The photon counting module is used to accurately measure the number of photons through a photon counter and convert it into an electronic signal;

[0010] The readout imaging module is used to form a digital image by using the photon counting module and the amplification processing module in cooperation;

[0011] The capture module is used to capture the number of SNSPD pixels generated during the imaging of the readout imaging module;

[0012] The combing module is used to comb and integrate the captured number of SNSPD pixels;

[0013] The sorting module is used to sort and convey the number of SNSPD pixels that have completed combing and integration.

[0014] As a preferred solution of the present invention: the capacitance feedback module includes a feedback unit and a change unit, and the output ends of the capacitance feedback module are unidirectionally connected to the input ends of the feedback unit and the change unit;

[0015] The feedback unit is used to feedback the output signal to the circuit input end through a capacitance element;

[0016] The change unit is used to change the phase and amplitude of the input signal.

[0017] As a preferred solution of the present invention: the conversion module includes a device control unit and a conversion unit, and the output ends of the conversion module are unidirectionally connected to the input ends of the device control unit and the conversion unit;

[0018] The device control unit is used to control the operation and use of the optical device;

[0019] The conversion unit is used to cooperate with the device control unit to convert photons into electronic signals.

[0020] As a preferred solution of the present invention: the amplification processing module includes a connection unit and a control unit, and the output ends of the amplification processing module are unidirectionally connected to the input ends of the connection unit and the control unit;

[0021] The connecting unit is used to connect and cooperate with the photon counting module;

[0022] The control unit is used to control the operation of the amplifier.

[0023] As a preferred solution of the present invention: the photon counting module comprises a counting unit and a conversion unit, and the output ends of the photon counting module are connected to the counting unit and the conversion unit;

[0024] The counting unit is used to control the photon counter to measure the number of photons;

[0025] The conversion unit is used to cooperate with the counting unit to feed back the converted electronic signal data.

[0026] As a preferred solution of the present invention: the readout imaging module comprises a matching unit and a readout imaging unit, and the output end of the readout imaging module is unidirectionally connected to the input end of the matching unit and the readout imaging unit;

[0027] The coordination unit is used to establish a connection between the photon counting module and the amplification processing module for coordinated use;

[0028] The readout imaging unit is used to cooperate with the cooperating unit to perform readout imaging.

[0029] As a preferred solution of the present invention: the capture module includes a marking unit and a capture unit, and the capture modules are unidirectionally connected to the marking unit and the capture unit;

[0030] The marking unit is used to mark the number of SNSPD pixels generated;

[0031] The capturing unit is used to capture the number of marked SNSPD pixels.

[0032] As a preferred solution of the present invention: the combing module includes an integration unit and a combing unit, and the output end of the combing module is unidirectionally connected to the input end of the integration unit and the combing unit;

[0033] The integration unit is used to integrate the captured SNSPD pixel numbers;

[0034] The combing unit is used to comb the number of SNSPD pixels after integration.

[0035] As a preferred solution of the present invention: the sorting module includes a rejecting unit and a conveying unit, and the output end of the sorting module is unidirectionally connected to the input end of the rejecting unit and the conveying unit;

[0036] The elimination unit is used to eliminate the SNSPD data with the same number of pixels and useless data;

[0037] The conveying unit is used to convey the sorted number of SNSPD pixels.

[0038] Compared with the prior art, the beneficial effects of the present invention are as follows: by adding a capacitance feedback module, the present invention realizes feedback of the output signal to the circuit input end through a capacitance element, controls the output signal by changing the phase and amplitude of the input signal, thereby reducing or eliminating the output signal, and improving the stability, sensitivity and reliability of the circuit; by adding a conversion module, an amplification processing module, a photon counting module and a readout imaging module, it is possible to use multiple modules in cooperation to convert a single photon into an electronic signal by using an optical device, and then cooperate with the photon counting module to generate a photoelectric reaction with a photosensitive element. The generated electronic signal is amplified and processed by an amplifier, and then the number of photons is accurately measured by a photon counter and converted into an electronic signal. Finally, the photon counting module and the amplification processing module are used in cooperation to form a digital image; by adding a capture module, a combing module and a sorting module, it is realized that the signal output by capacitance feedback captures a large number of SNSPD pixels, and then combs and sorts and conveys them to prevent the appearance of increased power consumption, thereby ensuring the smooth progress of the subsequent readout imaging work. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a system block diagram of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0040] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0041] Please refer to Figure 1, the present invention provides a technical solution: a superconducting single-photon readout imaging system based on capacitive feedback, comprising: a superconducting single-photon detector, a readout imaging system, a capacitive feedback module, a conversion module, an amplification processing module, a photon counting module, a readout imaging module, a capture module, a sorting module, and an arrangement module. The output end of the capacitive feedback module is unidirectionally connected to the input end of the superconducting single-photon detector, the superconducting single-photon detector is bidirectionally connected to the readout imaging system, the output end of the readout imaging system is unidirectionally connected to the input end of the conversion module, the output end of the conversion module is unidirectionally connected to the input end of the amplification processing module, the amplification processing module is bidirectionally connected to the photon counting module, the output end of the amplification processing module is unidirectionally connected to the input end of the readout imaging module, the output end of the readout imaging module is unidirectionally connected to the input end of the superconducting single-photon detector, the capture module is bidirectionally connected to the capacitive feedback module, the sorting module is bidirectionally connected to the capture module, and the arrangement module is bidirectionally connected to the sorting module;

[0042] The readout imaging system is used for superconducting single-photon readout imaging based on capacitive feedback;

[0043] The capacitive feedback module is used to feedback the output signal to the circuit input end through a capacitive element, control the output signal by changing the phase and amplitude of the input signal, thereby reducing or eliminating the output signal, and improving the stability, sensitivity, and reliability of the circuit;

[0044] The conversion module is used to convert a single photon into an electrical signal by using an optical device;

[0045] The amplification processing module is used to cooperate with the photon counting module to generate a photoelectric reaction with a photosensitive element, and the generated electrical signal is amplified and processed by an amplifier;

[0046] The photon counting module is used to accurately measure the number of photons through a photon counter and convert it into an electrical signal;

[0047] The readout imaging module is used to form a digital image by using the photon counting module and the amplification processing module in cooperation;

[0048] The capture module is used to capture the number of SNSPD pixels generated during the imaging of the readout imaging module;

[0049] The sorting module is used to sort and integrate the captured number of SNSPD pixels;

[0050] The arrangement module is used to arrange and convey the number of SNSPD pixels that have completed sorting and integration.

[0051] Among them, the capacitive feedback module includes a feedback unit and a change unit, and the output ends of the capacitive feedback module are unidirectionally connected to the input ends of the feedback unit and the change unit;

[0052] The feedback unit is used to feedback the output signal to the circuit input terminal through a capacitive element;

[0053] The change unit is used to change the phase and amplitude of the input signal.

[0054] Among them, the conversion module includes a device control unit and a conversion unit, and the output terminals of the conversion module are all unidirectionally connected to the input terminals of the device control unit and the conversion unit;

[0055] The device control unit is used to control the operation and use of the optical device;

[0056] The conversion unit is used to cooperate with the device control unit to convert photons into electronic signals.

[0057] Among them, the amplification processing module includes a connection unit and a control unit, and the output terminals of the amplification processing module are all unidirectionally connected to the input terminals of the connection unit and the control unit;

[0058] The connection unit is used to connect and cooperate with the photon counting module;

[0059] The control unit is used to control the operation of the amplifier.

[0060] Among them, the photon counting module includes a counting unit and a conversion unit, and the output terminals of the photon counting module are all connected to the counting unit and the conversion unit;

[0061] The counting unit is used to control the photon counter to measure the number of photons;

[0062] The conversion unit is used to cooperate with the counting unit to feedback the converted electronic signal data.

[0063] Among them, the readout imaging module includes a cooperation unit and a readout imaging unit, and the output terminal of the readout imaging module is unidirectionally connected to the input terminals of the cooperation unit and the readout imaging unit;

[0064] The cooperation unit is used to establish a connection and cooperate with the photon counting module and the amplification processing module;

[0065] The readout imaging unit is used to cooperate with the cooperation unit to perform readout imaging.

[0066] Among them, the capture module includes a marking unit and a capture unit, and the capture module is unidirectionally connected to both the marking unit and the capture unit;

[0067] The marking unit is used to mark the number of SNSPD pixels generated;

[0068] The capture unit is used to capture the marked number of SNSPD pixels.

[0069] Among them, the combing module includes an integration unit and a combing unit, and the output ends of the combing module are unidirectionally connected to the input ends of the integration unit and the combing unit;

[0070] The integration unit is used to integrate the captured SNSPD pixel numbers together;

[0071] The combing unit is used to comb the integrated SNSPD pixel numbers.

[0072] Among them, the sorting module includes an elimination unit and a conveying unit, and the output ends of the sorting module are unidirectionally connected to the input ends of the elimination unit and the conveying unit;

[0073] The elimination unit is used to eliminate the SNSPD pixel numbers with the same value and useless data;

[0074] The conveying unit is used to convey the sorted SNSPD pixel numbers.

[0075] Specifically, during use, a superconducting single-photon detector and a readout imaging system cooperate to receive photons and perform superconducting single-photon readout imaging based on capacitive feedback. The output signal is fed back to the circuit input terminal through a capacitive element by the capacitive feedback module. The output signal is controlled by changing the phase and amplitude of the input signal, thereby reducing or eliminating the output signal, improving the stability, sensitivity, and reliability of the circuit. The feedback unit in the capacitive feedback module feeds the output signal back to the circuit input terminal through a capacitive element, and the change unit changes the phase and amplitude of the input signal. The conversion module uses an optical device to convert a single photon into an electrical signal, and the device control unit in the conversion module controls the operation of the optical device. The conversion unit and the device control unit cooperate to convert photons into electrical signals. The amplification processing module and the photon counting module cooperate with a photosensitive element to generate a photoelectric reaction, and the generated electrical signal is amplified and processed by an amplifier. The connection unit in the amplification processing module is connected and cooperated with the photon counting module, and the control unit controls the operation of the amplifier. The photon counting module accurately measures the number of photons through a photon counter and converts it into an electrical signal. The counting unit in the photon counting module controls the photon counter to measure the number of photons, and the conversion unit and the counting unit cooperate to feedback the converted electrical signal data. The readout imaging module uses the photon counting module and the amplification processing module together to form a digital image. The cooperation unit in the readout imaging module establishes a connection and cooperation between the photon counting module and the amplification processing module. The readout imaging unit and the cooperation unit cooperate to perform readout imaging. The capture module captures the number of SNSPD pixels generated during the imaging of the readout imaging module. The marking unit in the capture module marks the generated number of SNSPD pixels, and the capture unit captures the marked number of SNSPD pixels. The sorting module sorts and integrates the captured number of SNSPD pixels. The integration unit in the sorting module integrates the captured number of SNSPD pixels together, and the sorting unit sorts the integrated number of SNSPD pixels. The finishing module finishes sorting and integrating the number of SNSPD pixels and conveys the quantity. The elimination unit in the finishing module eliminates the same and useless data of the number of SNSPD pixels, and the conveying unit conveys the finished sorted number of SNSPD pixels.

[0076] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A superconducting single-photon readout imaging system based on capacitive feedback, characterized in that: include: A superconducting single-photon detector, a readout imaging system, a capacitive feedback module, a conversion module, an amplifying processing module, a photon counting module, a readout imaging module, a capturing module, a combing module and a tidying module, wherein the output end of the capacitive feedback module is unidirectionally connected to the input end of the superconducting single-photon detector, the superconducting single-photon detector is bidirectionally connected to the readout imaging system, the output end of the readout imaging system is unidirectionally connected to the input end of the conversion module, the output end of the conversion module is unidirectionally connected to the input end of the amplifying processing module, the amplifying processing module is bidirectionally connected to the photon counting module, the output end of the amplifying processing module is unidirectionally connected to the input end of the readout imaging module, the output end of the readout imaging module is unidirectionally connected to the input end of the superconducting single-photon detector, the capturing module is bidirectionally connected to the capacitive feedback module, the combing module is bidirectionally connected to the capturing module, and the tidying module is bidirectionally connected to the combing module; The readout imaging system is used for reading out imaging by superconducting single photons based on capacitive feedback; The capacitor feedback module is used to feed back the output signal to the circuit input terminal through the capacitor element, and control the output signal by changing the phase and amplitude of the input signal, thereby reducing or eliminating the output signal and improving the stability, sensitivity and reliability of the circuit; The conversion module is used to convert a single photon into an electronic signal using an optical device; The amplification processing module is used to cooperate with the photon counting module to generate a photoelectric reaction with the photosensitive element, and the generated electronic signal is amplified and processed by the amplifier; The photon counting module is used to accurately measure the number of photons through a photon counter and convert it into an electronic signal; The readout imaging module is used to form a digital image by using the photon counting module and the amplification processing module in conjunction with each other; The capture module is used to capture the number of SNSPD pixels generated when the imaging module is imaging; The combing module is used to comb and integrate the captured SNSPD pixel numbers; The sorting module is used to sort the number of SNSPD pixels that have been sorted and integrated and then transported.

2. The superconducting single-photon readout imaging system based on capacitive feedback according to claim 1, characterized in that: The capacitance feedback module comprises a feedback unit and a change unit, and the output end of the capacitance feedback module is unidirectionally connected to the input end of the feedback unit and the change unit; The feedback unit is used to feed back the output signal to the circuit input terminal through the capacitive element; The changing unit is used to change the phase and amplitude of the input signal.

3. The superconducting single-photon readout imaging system based on capacitive feedback according to claim 2, characterized in that: The conversion module comprises a device control unit and a conversion unit, and the output end of the conversion module is unidirectionally connected to the input end of the device control unit and the conversion unit; The device control unit is used to control the operation and use of the optical device; The conversion unit is used to cooperate with the device control unit to convert photons into electronic signals.

4. The superconducting single-photon readout imaging system based on capacitive feedback according to claim 3, characterized in that: The amplification processing module comprises a connection unit and a control unit, and the output end of the amplification processing module is unidirectionally connected to the input end of the connection unit and the control unit; The connecting unit is used to connect and cooperate with the photon counting module; The control unit is used to control the operation of the amplifier.

5. The superconducting single-photon readout imaging system based on capacitive feedback according to claim 4, characterized in that: The photon counting module comprises a counting unit and a conversion unit, and the output ends of the photon counting module are connected to the counting unit and the conversion unit; The counting unit is used to control the photon counter to measure the number of photons; The conversion unit is used to cooperate with the counting unit to feed back the converted electronic signal data.

6. The superconducting single-photon readout imaging system based on capacitive feedback according to claim 5, characterized in that: The readout imaging module comprises a matching unit and a readout imaging unit, and the output end of the readout imaging module is unidirectionally connected to the input end of the matching unit and the readout imaging unit; The coordination unit is used to establish a connection between the photon counting module and the amplification processing module for coordinated use; The readout imaging unit is used to cooperate with the cooperating unit to perform readout imaging.

7. The superconducting single-photon readout imaging system based on capacitive feedback according to claim 6, characterized in that: The capture module comprises a marking unit and a capture unit, and the capture modules are unidirectionally connected to the marking unit and the capture unit; The marking unit is used to mark the number of SNSPD pixels generated; The capturing unit is used to capture the number of marked SNSPD pixels.

8. The superconducting single-photon readout imaging system based on capacitive feedback according to claim 7, characterized in that: The combing module comprises an integration unit and a combing unit, and the output end of the combing module is unidirectionally connected to the input ends of the integration unit and the combing unit; The integration unit is used to integrate the captured SNSPD pixel numbers; The combing unit is used to comb the number of SNSPD pixels after integration.

9. A superconducting single-photon readout imaging system based on capacitive feedback according to claim 8, characterized in that: The sorting module comprises a rejecting unit and a conveying unit, and the output end of the sorting module is unidirectionally connected to the input end of the rejecting unit and the conveying unit; The elimination unit is used to eliminate the SNSPD data with the same number of pixels and useless data; The conveying unit is used to convey the sorted SNSPD pixels.

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