Anti-interference measurement method and device for Josephson junction resistance and electronic equipment

Abstract

The invention discloses an anti-interference measurement method for Josephson junction resistance, and belongs to the technical field of quantum chips. According to the method, n * m resistance measurement values are obtained by applying n alternating-current electric signals with different frequencies to a Josephson junction and performing m times of measurement under the action of each alternating-current electric signal; determining a weight corresponding to each numerical value based on the occurrence frequency of the numerical value of each resistance measurement value in the n * m resistance measurement values; and determining a resistance calculation value of the Josephson junction by using each numerical value and the corresponding weight. According to the method, multiple times of measurement are carried out under the alternating current signals with different frequencies, the proportion of the resistance measurement values with errors caused by noise coupling in the environment to all the resistance measurement values is reduced, and the accuracy of Josephson junction resistance measurement can be effectively improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of quantum chip, and particularly relates to an anti-interference measurement method, device and electronic device for the resistance of Josephson junction. Background Art

[0002] The key structure on a superconducting quantum chip is a superconducting quantum bit, and the key structure of a superconducting quantum bit is a Josephson junction. To ensure the performance of the superconducting quantum chip, it is necessary to strictly control the frequency parameters of the superconducting quantum bit. The room-temperature resistance characterization of the superconducting quantum bit is important information reflecting the frequency parameters, and the resistance of the Josephson junction is the key to the room-temperature resistance characterization of the superconducting quantum bit.

[0003] Since the Josephson junction is very fragile, in order to avoid burning it during the measurement process, a small voltage is often used when measuring the resistance of the Josephson junction at room temperature. However, during the existing measurement process of the small voltage signal corresponding to the Josephson junction, it is very susceptible to electromagnetic noise in the environment, resulting in a reduction in the accuracy of the measured voltage result of the Josephson junction, and further causing a large error in the calculated resistance value. Summary of the Invention

[0004] The object of the present invention is to provide an anti-interference measurement method, device and electronic device for the resistance of Josephson junction to solve the deficiencies in the prior art, which can reduce the influence of environmental noise during the measurement process and effectively and accurately characterize the resistance value of the Josephson junction.

[0005] The solution of the example of the present application is implemented through the following content.

[0006] In a first aspect, the example of the present application proposes an anti-interference measurement method for the resistance of Josephson junction, and the method includes:

[0007] Obtain n*m resistance measurement values, where n and m are natural numbers greater than 1, and the n*m resistance measurement values are obtained by applying n alternating current signals with different frequencies to the Josephson junction and performing m measurements under the action of each alternating current signal;

[0008] Based on the number of times each resistance measurement value appears among the n*m resistance measurement values, determine the weight value corresponding to each value;

[0009] Use each value and the corresponding weight value to determine the resistance calculation value of the Josephson junction.

[0010] According to some examples of the present application, the amplitude of each alternating current signal is equal.

[0011] According to some examples of the present application, the frequency of each of the alternating current signals satisfies a frequency threshold condition, and the frequency threshold condition is determined by the frequency distribution range of the ambient noise.

[0012] According to some examples of the present application, the weights include single - frequency weights and multi - frequency weights. Determining the weight corresponding to a value based on the number of times the value appears among the n*m resistance measurement values includes:

[0013] When a certain value appears in the measurement at a certain frequency, determine the single - frequency weight corresponding to the value according to the number of occurrences;

[0014] Determine the multi - frequency weight corresponding to the value according to the number of frequencies corresponding to the frequency measurements in which the value appears.

[0015] According to some examples of the present application, using each of the values and the corresponding weights to determine the resistance calculation value of the Josephson junction includes:

[0016] Based on the weighted average algorithm, determine the resistance calculation value of the Josephson junction according to the single - frequency weight and multi - frequency weight corresponding to each value.

[0017] According to some examples of the present application, the method of using each of the values and the corresponding weights to determine the resistance calculation value of the Josephson junction includes: weighted average.

[0018] In a second aspect, some examples of the present application propose an anti - interference measurement device for the resistance of a Josephson junction, and the device includes:

[0019] A resistance measurement value acquisition module, configured to obtain n*m resistance measurement values, where n and m are natural numbers greater than 1, and the n*m resistance measurement values are obtained by applying n alternating current signals with different frequencies to the Josephson junction and performing m measurements under the action of each alternating current signal;

[0020] A weight determination module, configured to determine the weight corresponding to each value based on the number of times the value of each resistance measurement value appears among the n*m resistance measurement values;

[0021] A resistance calculation module, configured to use each of the values and the corresponding weights to determine the resistance calculation value of the Josephson junction.

[0022] According to some examples of the present application, the resistance calculation module is specifically configured to:

[0023] Based on the weighted average algorithm, determine the resistance calculation value of the Josephson junction according to each of the values and the corresponding weights.

[0024] In a third aspect, an example of the present application provides an electronic device, including: a processor;

[0025] a memory for storing executable instructions of the processor;

[0026] wherein, the processor realizes the anti-interference measurement method of the Josephson junction resistance described in the first aspect above by running the executable instructions.

[0027] In a fourth aspect, an example of the present application provides a readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, it can realize the anti-interference measurement method of the Josephson junction resistance described in the first aspect above.

[0028] In the anti-interference measurement method of the Josephson junction resistance in the foregoing example of the present application, n alternating current signals with different frequencies are applied to the Josephson junction, and m measurements are performed under the action of each alternating current signal to obtain n*m resistance measurement values; based on the numerical values of each resistance measurement value and the number of times it appears among the n*m resistance measurement values, the weight value corresponding to each numerical value is determined; using each numerical value and the corresponding weight value, the resistance calculation value of the Josephson junction is determined. The above method reduces the proportion of resistance measurement values with errors caused by noise coupling in the environment among all resistance measurement values by performing multiple measurements under alternating current signals with different frequencies, and thus can effectively improve the accuracy of the Josephson junction resistance measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] For a clearer illustration, the drawings required for use in the description will be briefly introduced below.

[0030] Figure 1 It is a flowchart of the anti-interference measurement method of the Josephson junction resistance in an example of the present application;

[0031] Figure 2 It is a flowchart of the anti-interference measurement method of the Josephson junction resistance in another example of the present application;

[0032] Figure 3 It is a structural block diagram of the anti-interference measurement device of the Josephson junction resistance in an example of the present application;

[0033] Figure 4 It is a structural block diagram of the electronic device in an example of the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0034] The following will describe the specific embodiments of the present invention in more detail with reference to the schematic diagrams. According to the following description and the claims, the advantages and features of the present invention will be clearer. It should be noted that the drawings are all in a very simplified form and use non-precise scales, only for the purpose of facilitating and clearly assisting in explaining the purpose of the embodiments of the present invention.

[0035] In the description of the present invention, it should be understood that the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0036] In the field of quantum chip manufacturing technology, the key structure on a superconducting quantum chip is the Josephson junction; to ensure the performance of a superconducting quantum chip, it is necessary to strictly control the frequency parameters of superconducting qubits, and the normal temperature resistance characterization of superconducting qubits is important information reflecting the frequency parameters, where the key to the normal temperature resistance of superconducting qubits is the resistance of the Josephson junction. Since the Josephson junction is very fragile, in order to avoid burning it out during the measurement process, a small current and small voltage are often used to measure it at normal temperature. However, the measurement of a small-magnitude voltage signal is very susceptible to magnetic noise in the environment, resulting in a reduction in the accuracy of the measurement result (i.e., during the process of measuring the voltage of the Josephson junction, the noise signal in the environment may couple with the voltage signal of the Josephson junction in the circuit, causing an error in the measured voltage value).

[0037] Based on this, as Figure 1 shown, an embodiment of the present invention provides an anti-interference measurement method for the resistance of a Josephson junction. In this embodiment, it is exemplified that the method is applied to a terminal (which can be called a management terminal). The method includes:

[0038] S101, obtaining n*m resistance measurement values, where n and m are natural numbers greater than 1, and the n*m resistance measurement values are obtained by applying n alternating current signals with different frequencies to the Josephson junction and performing m measurements under the action of each alternating current signal.

[0039] Among them, the resistance measurement value is obtained based on Ohm's law according to the voltage measurement value and current measurement value corresponding to the Josephson junction. The terminal can directly obtain the n*m resistance measurement values, or can obtain the m groups of voltage measurement values and current measurement values corresponding to each alternating current signal, and then obtain the n*m resistance measurement values. It should be noted that the present application does not specifically limit the resistance measurement circuit where the Josephson junction is located, as long as the terminal can obtain the n*m resistances measured for the Josephson junction m times under the action of n alternating current signals with different frequencies. The present application only limits that the frequencies of the alternating current signals are different, and does not specifically limit information such as the amplitude of the alternating current signal, which can be selected according to actual needs.

[0040] S102. Determine the weights corresponding to each value based on the number of occurrences of each resistance measurement value among the n*m resistance measurement values.

[0041] Among them, for each resistance measurement value, the terminal can determine the weight corresponding to the resistance measurement value according to the number of occurrences of the value of the resistance measurement value among the n*m resistance measurement values and the number corresponding to the n*m resistance measurement values. It should be noted that the method for the terminal to determine the weights corresponding to each value is not limited to the above manner.

[0042] Since the noise in the environment is randomly distributed, when the frequency distribution of the alternating current signal is wide enough and the number is large enough, the probability of the resistance measurement values affected by environmental noise coupling and generating errors among the n*m resistance measurement values obtained by the terminal is far reduced. Furthermore, the resistance accurate value that is not affected by noise appears the most times among the n*m resistance measurement values. Therefore, the way for the terminal to determine the weights of each value only needs to satisfy that the resistance measurement value with the most occurrences has the highest weight to improve the calculation accuracy. The specific weight determination process in this application is not specifically limited.

[0043] S103. Determine the calculated resistance value of the Josephson junction using each value and the corresponding weight.

[0044] In an embodiment of this application, the terminal can calculate the resistance of the Josephson junction based on weighted average according to the value of each resistance measurement value and its corresponding weight. The terminal can also arrange the weights corresponding to the values of each resistance measurement value in descending order, and calculate the resistance of the Josephson junction using the resistance measurement values in the top three positions (which can be set according to actual needs) of the sequence. It should be noted that this application does not specifically limit the specific calculation process for determining the calculated resistance value of the Josephson junction based on each value and the corresponding weight.

[0045] In an anti-interference measurement method for the resistance of a Josephson junction proposed in this application, n alternating current signals with different frequencies are applied to the Josephson junction, and m measurements are made under the action of each alternating current signal to obtain n*m resistance measurement values; determine the weights corresponding to each value based on the number of occurrences of each resistance measurement value among the n*m resistance measurement values; determine the calculated resistance value of the Josephson junction using each value and the corresponding weight. The above method reduces the proportion of resistance measurement values with errors caused by environmental noise coupling among all resistance measurement values by making multiple measurements under alternating current signals with different frequencies, and thus can effectively improve the accuracy of the resistance measurement of the Josephson junction.

[0046] In an embodiment of this application, the amplitudes of each alternating current signal are equal.

[0047] Among them, the amplitudes of each alternating current signal are equal, and only the frequencies are different.

[0048] In one embodiment of the present application, the frequency of each alternating current signal satisfies a frequency threshold condition, which is determined by the frequency distribution range of environmental noise.

[0049] During the process of measuring the voltage of the Josephson junction, the noise signal in the environment may be coupled with the voltage signal of the Josephson junction in the circuit, resulting in an error in the measured voltage value, and further causing a deviation in the measured resistance value. Since the noise in the environment is randomly distributed, when the frequency distribution of the alternating current signals is wide enough and the number is large enough, the probability of the measured resistance values affected by environmental noise coupling among the n*m measured resistance values obtained by the terminal is greatly reduced, that is, the weight corresponding to the error resistance measurement value is reduced.

[0050] Based on this, the frequency of the alternating current signal is set according to the distribution range of environmental noise. There should be no overlap between the frequency ranges corresponding to all alternating current signals and the environmental noise distribution range. For example, if the environmental electrical noise frequency band in a certain laboratory is concentrated around 2.5 MHz and 6.5 MHz, the bandwidth is set according to actual needs to obtain the environmental noise distribution range, and then the frequency threshold range (the frequency threshold distribution range and the environmental noise distribution range do not overlap) can be determined to set the frequency of the alternating current signal.

[0051] In the above method, when the frequency of each alternating current signal satisfies the frequency threshold condition determined by the frequency distribution range of environmental noise, the probability of obtaining the measured resistance values affected by environmental noise can be effectively reduced, and thus the calculation accuracy of the calculated resistance value can be improved.

[0052] In one embodiment of the present application, the weight includes a single-frequency weight and a multi-frequency weight, such as Figure 2 shown in the above step S102, based on the value of each measured resistance value and the number of times it appears among the n*m measured resistance values, determine the weight corresponding to each value, including:

[0053] Step S201, when a certain value appears in the measurement at a certain frequency, determine the single-frequency weight corresponding to the value according to the number of appearances.

[0054] Among them, each measured resistance value has a single-frequency weight and a multi-frequency weight.

[0055] Specifically, when the value of a measured resistance value appears at least twice at a certain frequency, the number of times it appears can be used as the single-frequency weight a of the value of the measured resistance value at that frequency R,f (where a R,frepresents the single - frequency weight of the resistance measurement value R at the frequency f). When the value of a resistance measurement appears only once at a frequency, the single - frequency weight of the value of the resistance measurement at that frequency is determined to be 0.

[0056] Furthermore, a resistance measurement value can have multiple single - frequency weights. For example: for a value (i.e., the resistance measurement value R), when the resistance measurement value R appears in multiple frequencies, for the number of times the resistance measurement value R appears at each frequency, determine the corresponding single - frequency weight of the resistance measurement value R at each frequency. Based on this, the resistance calculation needs to be based on the single - frequency weights at each frequency corresponding to each resistance measurement value.

[0057] Step S202: Determine the multi - frequency weight corresponding to the value according to the number of frequencies measured where the value appears.

[0058] Specifically, when a value (i.e., the resistance measurement value R) appears in at least two frequency measurements, according to the number of frequencies where the value appears, the calculation formula for the multi - frequency weight corresponding to the value is: b R = 2 N-1 , where b R represents the multi - frequency weight of the resistance measurement value R, and N is the number of frequencies where the resistance measurement value R appears; when a value (i.e., the resistance measurement value R) appears only once in a frequency measurement, the multi - frequency weight of the resistance measurement value is determined to be 0. For a resistance measurement value, there is only one multi - frequency weight.

[0059] Table 1: n*m resistance measurement tables

[0060]

[0061] As shown in Table 1, there are n*m resistance measurement tables. Taking the resistance measurement value R0 as an example, it is described as follows: From Table 1, it can be obtained that there are a total of four frequencies, and each frequency is measured 8 times. The resistance measurement value R0 appears 3 times at the frequency F0, 1 time at the frequency F1, 6 times at the frequency F2, and 5 times at the frequency F3. Therefore, the single - frequency weight of the resistance measurement value R0 at the frequency F0 is 3, the single - frequency weight of the resistance measurement value R0 at the frequency F1 is 0, the single - frequency weight of the resistance measurement value R0 at the frequency F2 is 6, the single - frequency weight of the resistance measurement value R0 at the frequency F3 is 5, and the multi - frequency weight b of the resistance measurement value R0 R0 = 2 4-1 = 8.

[0062] In an embodiment of the present application, using each value and the corresponding weight to determine the resistance calculation value of the Josephson junction includes:

[0063] Based on the weighted average algorithm, the calculated resistance value of the Josephson junction is determined according to the single-frequency weight value and multi-frequency weight value corresponding to each numerical value.

[0064] Specifically, the terminal determines the calculation formula for the calculated resistance value of the Josephson junction based on the weighted average algorithm according to the single-frequency weight value and multi-frequency weight value corresponding to each numerical value as follows:

[0065]

[0066] Wherein, is the calculated resistance value, R f is the measured resistance value R at frequency f, a R,f is the single-frequency weight value of the measured resistance value R at frequency f, b R represents the multi-frequency weight value of the measured resistance value R.

[0067] It should be noted that the methods for determining the weight value and calculating the resistance value in this application are only illustrative examples and are not specifically limited thereto, and can be selected according to actual needs.

[0068] It should be understood that although the steps in the flowcharts involved in the above embodiments are shown in sequence according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless otherwise clearly stated in this article, the execution of these steps has no strict order limit, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above embodiments may include multiple steps or multiple stages. These steps or stages are not necessarily executed at the same time, but can be executed at different times. The execution order of these steps or stages is not necessarily sequential, but can be executed alternately or in turn with at least a part of other steps or steps or stages in other steps.

[0069] Based on the same inventive concept, the embodiments of the present application also provide a device for anti-interference measurement of the Josephson junction resistance for implementing the anti-interference measurement method of the Josephson junction resistance involved above. The implementation solutions provided by this device to solve problems are similar to the implementation solutions described in the above method. Therefore, the specific limitations in one or more embodiments of the device for anti-interference measurement of the Josephson junction resistance provided below can refer to the limitations on the anti-interference measurement method of the Josephson junction resistance in the above text, and will not be repeated here.

[0070] As Figure 3 shown, in an embodiment of the present application, a device 300 for anti-interference measurement of the Josephson junction resistance is provided, including:

[0071] A resistance measurement value acquisition module 310, configured to obtain n*m resistance measurement values, where n and m are natural numbers greater than 1, and the n*m resistance measurement values are obtained by applying n alternating current signals with different frequencies to a Josephson junction and performing m measurements under the action of each alternating current signal;

[0072] A weight determination module 320, configured to determine the weights corresponding to each value based on the value of each resistance measurement value and the number of times it appears among the n*m resistance measurement values;

[0073] A resistance calculation module 330, configured to determine the resistance calculation value of the Josephson junction by using each value and the corresponding weight.

[0074] In an embodiment of the present application, the resistance calculation module 330 is specifically configured to:

[0075] Based on the weighted average algorithm, determine the resistance calculation value of the Josephson junction according to each value and the corresponding weight.

[0076] In an embodiment of the present application, the amplitudes of each alternating current signal are equal.

[0077] In an embodiment of the present application, the frequency of each alternating current signal satisfies a frequency threshold condition, and the frequency threshold condition is determined by the frequency distribution range of the ambient noise.

[0078] In an embodiment of the present application, the weights include single-frequency weights and multi-frequency weights, and the weight determination module 320 is specifically configured to:

[0079] When a certain value appears in the measurement at a certain frequency, determine the single-frequency weight corresponding to the value according to the number of appearances;

[0080] Determine the multi-frequency weight corresponding to the value according to the number of frequencies corresponding to the frequency measurement in which the value appears.

[0081] In an embodiment of the present application, the resistance calculation module 330 is specifically configured to:

[0082] Based on the weighted average algorithm, determine the resistance calculation value of the Josephson junction according to the single-frequency weight and multi-frequency weight corresponding to each value.

[0083] Based on the same inventive concept, as Figure 4 shown, an embodiment of the present invention also provides an electronic device, including:

[0084] A processor;

[0085] A memory for storing instructions executable by the processor;

[0086] Among them, the processor realizes the anti-interference measurement method of the Josephson junction resistance in any one of the above characteristic descriptions by running executable instructions.

[0087] Based on the same inventive concept, an embodiment of the present invention further provides a readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the anti-interference measurement method of the Josephson junction resistance in any one of the above characteristic descriptions can be realized.

[0088] A readable storage medium can be a tangible device that can hold and store instructions used by an instruction execution device. For example, it can be, but is not limited to, an electrical storage device, a magnetic storage device, an optical storage device, an electromagnetic storage device, a semiconductor storage device, or any suitable combination of the above. More specific examples (a non-exhaustive list) of the readable storage medium include: a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), a static random access memory (SRAM), a portable compact disk read-only memory (CD-ROM), a digital versatile disk (DVD), a memory stick, a floppy disk, a mechanical encoding device, such as a punched card or raised structures in grooves storing instructions thereon, and any suitable combination of the above. The computer programs described herein can be downloaded from the readable storage medium to various computing / processing devices, or downloaded to an external computer or external storage device through a network, such as the Internet, a local area network, a wide area network, and / or a wireless network. The network can include copper transmission cables, optical fiber transmissions, wireless transmissions, routers, firewalls, switches, gateway computers, and / or edge servers. A network adapter or network interface in each computing / processing device receives the computer program from the network and forwards the computer program for storage in the readable storage medium in each computing / processing device. The computer program for performing the operations of the present invention can be assembly instructions, instruction set architecture (ISA) instructions, machine instructions, machine-related instructions, microcode, firmware instructions, state setting data, or source code or object code written in any combination of one or more programming languages, including object-oriented programming languages - such as Smalltalk, C++, etc., and conventional procedural programming languages - such as the "C" language or similar programming languages. The computer program can be executed entirely on the user's computer, partially on the user's computer, executed as an independent software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer can be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or can be connected to an external computer (e.g., by using an Internet service provider to connect through the Internet). In some embodiments, by using the state information of the computer program to customize an electronic circuit, such as a programmable logic circuit, a field programmable gate array (FPGA), or a programmable logic array (PLA), the electronic circuit can execute computer-readable program instructions to implement various aspects of the present invention.

[0089] Aspects of the present invention are described herein with reference to the flowcharts and / or block diagrams of methods, systems, and computer program products according to embodiments of the present invention. It should be understood that each block of the flowcharts and / or block diagrams, and combinations of blocks in the flowcharts and / or block diagrams, can be implemented by computer programs. These computer programs can be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, thereby producing a machine such that when these programs are executed by the processor of the computer or other programmable data processing device, a device is created that implements the functions / actions specified in one or more blocks of the flowcharts and / or block diagrams. These computer programs can also be stored in a readable storage medium, and these computer programs cause a computer, a programmable data processing device, and / or other devices to work in a specific manner. Thus, the readable storage medium storing the computer programs includes a manufactured article that includes instructions for implementing various aspects of the functions / actions specified in one or more blocks of the flowcharts and / or block diagrams.

[0090] The computer programs can also be loaded onto a computer, other programmable data processing device, or other device, such that a series of operational steps are performed on the computer, other programmable data processing device, or other device to produce a computer-implemented process, thereby causing the computer programs executed on the computer, other programmable data processing device, or other device to implement the functions / actions specified in one or more blocks of the flowcharts and / or block diagrams.

[0091] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", or "specific example" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments in a suitable manner. In addition, those skilled in the art can combine and combine the different embodiments or examples described in this specification.

[0092] The above are only the preferred embodiments of the present invention and do not impose any limitation on the present invention. Any person skilled in the art within the technical field of the present invention, without departing from the technical solution of the present invention, makes any form of equivalent replacement or modification and other changes to the technical solution and technical content disclosed by the present invention, all of which belong to the content of the technical solution of the present invention and are still within the protection scope of the present invention.

Claims

1. An anti-interference measurement method for the resistance of a Josephson junction, characterized in that, The method includes: Obtaining n*m resistance measurement values, where n and m are natural numbers greater than 1, and the n*m resistance measurement values are obtained by applying n alternating current signals with different frequencies to the Josephson junction and performing m measurements under the action of each alternating current signal; Determining the weight value corresponding to each value based on the number of times each resistance measurement value appears among the n*m resistance measurement values; Using each value and the corresponding weight value to determine the calculated resistance value of the Josephson junction.

2. The method according to claim 1, characterized in that The amplitude of each alternating current signal is equal.

3. The method according to claim 1 or 2, characterized in that, The frequency of each alternating current signal satisfies a frequency threshold condition, and the frequency threshold condition is determined by the frequency distribution range of environmental noise.

4. The method according to claim 1, characterized in that, The weight value includes a single-frequency weight value and a multi-frequency weight value. Determining the weight value corresponding to the value based on the number of times each resistance measurement value appears among the n*m resistance measurement values includes: When a certain value appears in the measurement at a certain frequency, determining the single-frequency weight value corresponding to the value according to the number of occurrences; Determining the multi-frequency weight value corresponding to the value according to the number of frequencies corresponding to the frequencies at which the value appears.

5. The method according to claim 4, characterized in that, Using each value and the corresponding weight value to determine the calculated resistance value of the Josephson junction includes: Based on the weighted average algorithm, determining the calculated resistance value of the Josephson junction according to the single-frequency weight value and the multi-frequency weight value corresponding to each value.

6. The method according to claim 1, characterized in that, The method of using each value and the corresponding weight value to determine the calculated resistance value of the Josephson junction includes: weighted average.

7. An anti-interference measurement device for Josephson junction resistance, characterized in that, The device includes: A resistance measurement value acquisition module for obtaining n*m resistance measurement values, where n and m are natural numbers greater than 1, and the n*m resistance measurement values are obtained by applying n alternating current signals with different frequencies to the Josephson junction and performing m measurements under the action of each alternating current signal; A weight value determination module for determining the weight value corresponding to each value based on the number of times each resistance measurement value appears among the n*m resistance measurement values; A resistance calculation module for using each value and the corresponding weight value to determine the calculated resistance value of the Josephson junction.

8. The device according to claim 7, characterized in that The resistance calculation module is specifically used for: Based on the weighted average algorithm, determining the calculated resistance value of the Josephson junction according to each value and the corresponding weight value.

9. An electronic device, comprising: A processor; A memory for storing instructions executable by the processor; Wherein, the processor realizes the method according to any one of claims 1-6 by running the executable instructions.

10. A computer-readable storage medium, on which computer instructions are stored, and when the instructions are executed by a processor, the steps of the method according to any one of claims 1-6 are realized.

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