Execution method of measurement and control experiment of quantum chip and quantum computer

Abstract

The invention discloses an execution method of a measurement and control experiment of a quantum chip and a quantum computer, a parallel experiment environment is configured in a first sub-interface of a first interface, the parallel experiment environment is a device participating in execution of a parallel experiment in the quantum chip, and the parallel experiment is that a plurality of quantum bits execute the same measurement and control experiment at the same time. And selecting a to-be-executed parallel experiment in the measurement and control experiment display column of the first interface, and generating experiment options of the to-be-executed parallel experiment in a second sub-interface of the first interface. And configuring experiment parameters of the to-be-executed parallel experiment in the second sub-interface, triggering a first control in the first interface, and starting to execute the to-be-executed parallel experiment. Various parallel experiment execution can be performed in the first interface without calling various software, so that the execution efficiency of the measurement and control experiment is effectively improved, and the execution efficiency of the quantum computer is improved to a certain extent.

Description

Technical Field

[0001] The present invention relates to the field of quantum computing technology, and in particular to a method for executing a measurement and control experiment of a quantum chip and a quantum computer. Background Art

[0002] Quantum computers are physical devices that follow the laws of quantum mechanics to perform high-speed mathematical and logical operations, store and process quantum information. The main characteristics of quantum computers are fast operation speed, strong information processing capabilities, and a wide range of applications. Compared with ordinary computers, the more information is processed, the more advantageous it is for quantum computers to perform operations, and the more accurate the operations can be.

[0003] Quantum chips are to quantum computers what CPUs are to traditional computers. Quantum chips are the core components of quantum computers. With the continuous advancement of research on quantum computing-related technologies, the number of quantum bits on quantum chips is also increasing year by year. It is foreseeable that larger-scale quantum chips will appear in the future, and the number of quantum bits in quantum chips will be greater, and quantum computers will also be equipped with larger-scale quantum chips.

[0004] Before a quantum chip goes online, it is necessary to test various parameters of the quantum chip, and after it goes online, it is necessary to calibrate the quantum chip. These tests and calibration operations require the use of a lot of hardware equipment and software programs to perform corresponding measurement and control experiments on the quantum chip. The measurement and control experiments mentioned here refer to experiments to control and read the quantum bits in the quantum chip. In the prior art, different software programs need to be called for different measurement and control experiments, which is very inefficient and greatly affects the execution efficiency of quantum computers.

[0005] Therefore, it is necessary to propose a solution that can improve the execution efficiency of quantum computers.

[0006] It should be noted that the information disclosed in the background technology section of this application is only intended to deepen the understanding of the general background technology of this application, and should not be regarded as an admission or suggestion in any form that the information constitutes prior art already known to those skilled in the art. Summary of the invention

[0007] The purpose of the present invention is to provide a method for executing a measurement and control experiment of a quantum chip and a quantum computer, which are used to solve the problem that different software programs need to be called for different measurement and control experiments in the existing technology, which is very inefficient and greatly affects the execution efficiency of the quantum computer.

[0008] In order to solve the above technical problems, the present invention proposes a method for executing a measurement and control experiment of a quantum chip, comprising:

[0009] In the first sub-interface of the first interface, a parallel experiment environment is configured, wherein the parallel experiment environment is a device in a quantum chip that participates in executing a parallel experiment, wherein the parallel experiment is a same measurement and control experiment performed by multiple quantum bits at the same time;

[0010] Selecting a parallel experiment to be executed in the measurement and control experiment display column of the first interface, and generating experimental options of the parallel experiment to be executed in the second sub-interface of the first interface;

[0011] In the second sub-interface, configure the experimental parameters of the parallel experiment to be executed;

[0012] The first control in the first interface is triggered to start executing the parallel experiment to be executed.

[0013] Optionally, multiple parallel experiments in the measurement and control experiment display column are displayed in list form.

[0014] Optionally, the results of the parallel experiment to be executed are displayed in real time in the third sub-interface of the first interface.

[0015] Optionally, the third sub-interface also displays the execution progress of the current measurement and control experiment in real time.

[0016] Optionally, configuring the parallel experiment environment in the first sub-interface of the first interface includes:

[0017] Experimental bits and environmental bits are configured, wherein the experimental bits are quantum bits used to perform parallel experiments, and the environmental bits are quantum bits in the quantum chip that have an impact on the experimental bits.

[0018] Optionally, configuring the parallel experiment environment in the first sub-interface of the first interface further includes:

[0019] A crosstalk matrix between the experimental bits and the environmental bits is configured, where the crosstalk matrix is ​​used to calibrate the crosstalk effect of the environmental bits on the experimental bits.

[0020] Optionally, the method further comprises:

[0021] The second control in the first interface is triggered to stop the parallel experiment currently being executed.

[0022] Based on the same inventive concept, the present invention also proposes a quantum control system, which uses the above-mentioned characteristic description to implement a method for a measurement and control experiment of a quantum chip described in any one of the above-mentioned characteristics.

[0023] Based on the same inventive concept, the present invention also proposes a quantum computer, including the quantum control system described in the above feature description.

[0024] Based on the same inventive concept, the present invention also proposes a readable storage medium on which a computer program is stored. When the computer program is executed by a processor, it can implement the execution method of the measurement and control experiment of the quantum chip described in any one of the above-mentioned feature descriptions.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] The present invention proposes a method for executing a measurement and control experiment of a quantum chip, in which a parallel experiment environment is configured in a first sub-interface of a first interface. The parallel experiment environment is a device in a quantum chip that participates in executing a parallel experiment. The parallel experiment is a method for executing the same measurement and control experiment simultaneously by multiple quantum bits. In the measurement and control experiment display column of the first interface, a parallel experiment to be executed is selected, and experimental options for the parallel experiment to be executed are generated in the second sub-interface of the first interface. In the second sub-interface, the experimental parameters of the parallel experiment to be executed are configured, and the first control in the first interface is triggered to start executing the parallel experiment to be executed. In the first interface, multiple parallel experiments can be executed without calling multiple software, which effectively improves the execution efficiency of the measurement and control experiment and improves the execution efficiency of the quantum computer to a certain extent.

[0027] The quantum control system, quantum computer and readable storage medium proposed in the present invention belong to the same inventive concept as the execution method of the measurement and control experiment of the quantum chip, and therefore have the same beneficial effects, which will not be elaborated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A schematic diagram of a flow chart of a method for executing a measurement and control experiment of a quantum chip proposed in an embodiment of the present invention;

[0029] Figure 2 This is a schematic diagram of a first interface proposed in an embodiment of the present invention. DETAILED DESCRIPTION

[0030] The specific implementation of the present invention will be described in more detail below in conjunction with the schematic diagram. The advantages and features of the present invention will become clearer from the following description and claims. It should be noted that the drawings are all in a very simplified form and are not in exact proportions, and are only used to facilitate and clearly assist in explaining the purpose of the embodiments of the present invention.

[0031] In the description of the present invention, it is necessary to understand that the terms "center", "up", "down", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0032] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0033] Please refer to Figure 1 The embodiment of the present invention provides a method for executing a measurement and control experiment of a quantum chip, comprising:

[0034] S100: configuring a parallel experiment environment in a first sub-interface of a first interface, wherein the parallel experiment environment is a device in a quantum chip that participates in executing a parallel experiment, wherein the parallel experiment is a same measurement and control experiment performed by multiple quantum bits at the same time;

[0035] S200: selecting a parallel experiment to be executed in the measurement and control experiment display column of the first interface, and generating experiment options of the parallel experiment to be executed in the second sub-interface of the first interface;

[0036] S300: configuring the experimental parameters of the parallel experiment to be executed in the second sub-interface;

[0037] S400: triggering a first control in the first interface to start executing the parallel experiment to be executed.

[0038] The difference from the prior art is that this embodiment proposes a method for executing a measurement and control experiment of a quantum chip, and configures a parallel experiment environment in the first sub-interface of the first interface. The parallel experiment environment is a device in the quantum chip that participates in executing parallel experiments, and the parallel experiment is that multiple quantum bits simultaneously execute the same measurement and control experiment. Select the parallel experiment to be executed in the measurement and control experiment display column of the first interface, and generate the experimental options of the parallel experiment to be executed in the second sub-interface of the first interface. Configure the experimental parameters of the parallel experiment to be executed in the second sub-interface, trigger the first control in the first interface, and start executing the parallel experiment to be executed. Multiple parallel experiments can be executed in the first interface without calling multiple software, which effectively improves the execution efficiency of the measurement and control experiment and improves the execution efficiency of the quantum computer to a certain extent.

[0039] For some quantum computers currently available on the market, most of them use a combination of a host computer, a quantum control system, and a quantum chip to implement some quantum computing tasks. Generally, the host computer receives the user's quantum computing task, processes the quantum computing task and forms a quantum circuit, and then maps the quantum circuit to the topological structure of the corresponding quantum chip. The quantum circuit contains the quantum logic gates required for this quantum computing task, the measurement operation of the final quantum computing result, and the timing of each operation. When the quantum control system receives the information contained in the quantum circuit, it will convert this information into corresponding instructions so that the corresponding hardware equipment can operate and complete the quantum computing task. Among them, the quantum control system includes a software system and a hardware system. The software system of the quantum control system is used to compile and process the user tasks (including but not limited to test tasks, calibration tasks, and other measurement and control experiments) transmitted from the host computer, and convert the corresponding user tasks into a language that the hardware system can recognize, so that the hardware system generates corresponding control signals and then achieves the purpose of operating and controlling the quantum chip. The solution of this application is actually the software system in the quantum control system.

[0040] It can be understood by those skilled in the art that the first interface proposed in this application is the main control interface of the quantum control system software system. The corresponding measurement and control experiment or parallel experiment can be realized by operating the menu bar, toolbar, experiment library, experiment parameter bar and log bar set on the interface. The operation mode here can be triggered by mouse click operation or touch operation, or even voice trigger, which is not limited here. Figure 2 This is a schematic diagram of the first interface proposed in an embodiment of the present application. It should be noted that: Figure 2 This is only an example and should not be considered as any limitation to the present application. There are many other layout forms to choose from.

[0041] The solution of the present application processes the software system of the quantum control system into an interface, and directly displays the most direct operation interface to technicians or operators without the need for programming from scratch. The test experiments, calibration experiments and control of the hardware system for the quantum bits in the quantum chip are made into specific interfaces and displayed in the terminal, which greatly improves the convenience of operation, the operability of the quantum computer and the testing efficiency of the quantum chip.

[0042] In addition, considering that the general measurement and control experiments in the current quantum control system software system can only perform specific measurement and control experiments on a certain quantum bit or coupler in the quantum chip, if you want to perform measurement and control experiments on multiple quantum bits or couplers at the same time, you can only do it by rewriting a new experiment class. In terms of experimental parameter delivery, you need to add additional scanning channels and reading channels. In terms of data processing, you need to rewrite the program every time to extract data according to the quantum bit or coupler. You need to rewrite a lot of programs to complete the support for parallel experimental result processing data, which is very cumbersome. In order to solve these problems, the interface of the parallel experiment is directly set in the first interface. Specifically, we first design the API of the parallel experiment. Considering that the goal of the solution is to maintain the integrity of the original experimental API and provide a convenient API for parallel execution of experiments, we first design a new experimental base class for parallel experiments, `ParalleExperiment`, which accepts a measurement and control experiment list as a parameter, and the experiments in the measurement and control experiment list are still generated in the normal way. Taking the simultaneous execution of the single-bit characterization RB experiment (RandomizedBenchmarking) of the first quantum bit Q1 and the second quantum bit Q2 as an example, we can first generate the single-bit RB experiment of the first quantum bit Q1 and the second quantum bit Q2, and then set the various parameter options of the experiment respectively. Finally, throw the experiment list to the `ParallelExperiment` class for instantiation. This interface is much simpler than writing a parallel execution script for each experiment before, and this API can be adapted to all measurement and control experiments.

[0043] Specifically, in this embodiment, multiple parallel experiments in the measurement and control experiment display column are displayed in a list format.

[0044] Specifically, in this embodiment, the results of the parallel experiment to be executed are displayed in real time in the third sub-interface of the first interface. During the execution of the parallel experiment, the accuracy of the experimental result graphics in the third sub-interface changes with time. The change in the accuracy of the experimental result graphics here refers to the graphics from the initial stage of the experiment that are filled with a pre-set coordinate system. As the progress of the experiment, the early graphics will be reduced in accuracy and move to the left as a whole, dynamically displaying the results of the entire measurement and control experiment. It can be understood that in this process, the accuracy of the coordinate system used to display the experimental result graphics is also changing dynamically. With this setting, the results of the experiment can be observed in real time, and if an error is found during the execution of the measurement and control experiment, the experiment can be intervened and stopped immediately, so that problems can be discovered in a timely manner, effectively saving time. It can be understood by those skilled in the art that the first sub-interface, namely Figure 2 The dynamic result display column in .

[0045] Specifically, in this embodiment, the third sub-interface also displays the execution progress of the current measurement and control experiment in real time. In order to display the execution progress of the current parallel experiment, the progress of the current measurement and control experiment can be displayed in the third sub-interface in the form of percentage, starting from 0%, and counting as the progress of the parallel experiment progresses until 100% indicates that the current parallel experiment is completed.

[0046] Specifically, in this embodiment, configuring the parallel experiment environment in the first sub-interface of the first interface includes:

[0047] Experimental bits and environmental bits are configured, wherein the experimental bits are quantum bits used to perform parallel experiments, and the environmental bits are quantum bits in the quantum chip that have an impact on the experimental bits.

[0048] Specifically, in this embodiment, configuring the parallel experiment environment in the first sub-interface of the first interface further includes:

[0049] A crosstalk matrix between the experimental bits and the environmental bits is configured, where the crosstalk matrix is ​​used to calibrate the crosstalk effect of the environmental bits on the experimental bits.

[0050] Specifically, in this embodiment, the method further includes:

[0051] The second control in the first interface is triggered to stop the parallel experiment currently being executed.

[0052] Please refer to Figure 2 , the first interface of the quantum control system also includes a DAG (Directed Acyclic Graph) library, a menu bar, an experiment library, an experiment parameter bar and a log bar. The DAG library is used to display a list of configured directed acyclic graphs and select directed acyclic graphs to be executed. Each node of the directed acyclic graph corresponds to a measurement and control experiment. When the directed acyclic graph is selected to be executed, the quantum control system will execute the measurement and control experiments of each node in sequence according to the direction and order in the directed acyclic graph. The first interface proposed in this application is the main control interface of the quantum control system software system. The corresponding measurement and control experiments can be implemented by operating the menu bar, experiment library, experiment parameter bar and log bar set on the interface. The DAG library and the experiment library can each occupy an area for display, and can also be as follows Figure 2 The DAG library, the experiment library, and the parallel experiment shown in the figure can be displayed together in one area (measurement and control experiment display column), and a selection control is set, and the operation triggers the corresponding selection control to display the corresponding content in the first area. The DAG structure display column, the dynamic result display column, and the chip topology display column can each occupy an area for display, and can also be displayed as follows Figure 2The DAG structure display bar, the dynamic result display bar, and the chip topology display bar shown in the figure are displayed together in the second area. Similar to the above, a selection control can be set to trigger the corresponding selection control to display the corresponding content in the second area. The method of setting the selection control can effectively save the use space of the interface, improve the use efficiency of the interface, and make the experimental results displayed in the dynamic result display bar clearer, which is convenient for observing the experimental results.

[0053] Based on the same inventive concept, the present invention also proposes a quantum control system, which uses the above-mentioned characteristic description to implement a method for a measurement and control experiment of a quantum chip described in any one of the above-mentioned characteristics.

[0054] Based on the same inventive concept, the present invention also proposes a quantum computer, including the quantum control system described in the above feature description.

[0055] Based on the same inventive concept, the present invention also proposes a readable storage medium on which a computer program is stored. When the computer program is executed by a processor, it can implement the execution method of the measurement and control experiment of the quantum chip described in any one of the above-mentioned feature descriptions.

[0056] The readable storage medium can be a tangible device that can keep and store the instructions used by the instruction execution device, such as but 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. The more specific example (non-exhaustive list) of the readable storage medium includes: 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 punch card or a convex structure in a groove on which instructions are stored, and any suitable combination of the above. The computer program described here can be downloaded from the readable storage medium to each computing / processing device, 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 transmission, wireless transmission, routers, firewalls, switches, gateway computers and / or edge servers. The network adapter card or network interface in each computing / processing device receives the computer program from the network and forwards the computer program for storage in a readable storage medium in each computing / processing device. The computer program for performing the operation of the present invention may be an assembly instruction, an instruction set architecture (ISA) instruction, a machine instruction, a machine-dependent instruction, a microcode, a firmware instruction, a state setting data, or a 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 "C" language or similar programming languages. The computer program may be executed entirely on the user's computer, partially on the user's computer, 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 may 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 may be connected to an external computer (e.g., using an Internet service provider to connect through the Internet). In some embodiments, by utilizing the state information of a computer program to personalize 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.

[0057] Here, various aspects of the present invention are described with reference to the flowchart and / or block diagram of the method, system and computer program product according to the embodiment of the present invention. It should be understood that each square frame of the flowchart and / or block diagram and the combination of the square frames in the flowchart and / or block diagram can be realized by a computer program. These computer programs can be provided to the processor of a general-purpose computer, a special-purpose computer or other programmable data processing device, so as to produce a machine, so that these programs, when executed by the processor of a computer or other programmable data processing device, produce a device for realizing the function / action specified in one or more square frames in the flowchart and / or block diagram. These computer programs can also be stored in a readable storage medium, and these computer programs make the computer, programmable data processing device and / or other equipment work in a specific way, so that the readable storage medium storing the computer program includes a manufactured product, which includes instructions for realizing various aspects of the function / action specified in one or more square frames in the flowchart and / or block diagram.

[0058] The computer program may also be loaded onto a computer, other programmable data processing apparatus, or other device so that a series of operational steps are executed on the computer, other programmable data processing apparatus, or other device to produce a computer-implemented process, thereby causing the computer program executed on the computer, other programmable data processing apparatus, or other device to implement the functions / actions specified in one or more boxes in the flowchart and / or block diagram.

[0059] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example" or "specific example" etc. means that the specific features, structures, materials or characteristics described in conjunction 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 may be combined in any one or more embodiments in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification.

[0060] The above is only a preferred embodiment of the present invention and does not limit the present invention in any way. Any technician in the relevant technical field, without departing from the scope of the technical solution of the present invention, makes any form of equivalent replacement or modification to the technical solution and technical content disclosed in the present invention, which does not depart from the content of the technical solution of the present invention and still falls within the protection scope of the present invention.

Claims

1. A method for executing a measurement and control experiment of a quantum chip, characterized in that: include: In the first sub-interface of the first interface, a parallel experiment environment is configured, wherein the parallel experiment environment is a device in a quantum chip that participates in executing a parallel experiment, wherein the parallel experiment is a same measurement and control experiment performed by multiple quantum bits at the same time; Selecting a parallel experiment to be executed in the measurement and control experiment display column of the first interface, and generating experimental options of the parallel experiment to be executed in the second sub-interface of the first interface; In the second sub-interface, configure the experimental parameters of the parallel experiment to be executed; The first control in the first interface is triggered to start executing the parallel experiment to be executed.

2. The method according to claim 1, characterized in that In the measurement and control experiment display column, multiple parallel experiments are displayed in a list format.

3. The method according to claim 1, characterized in that The third sub-interface of the first interface displays the results of the parallel experiment to be executed in real time.

4. The method according to claim 3, characterized in that The third sub-interface also displays the execution progress of the current measurement and control experiment in real time.

5. The method according to claim 1, characterized in that The configuring of the parallel experiment environment in the first sub-interface of the first interface includes: Experimental bits and environmental bits are configured, wherein the experimental bits are quantum bits used to perform parallel experiments, and the environmental bits are quantum bits in the quantum chip that have an impact on the experimental bits.

6. The method according to claim 5, characterized in that The configuring of the parallel experiment environment in the first sub-interface of the first interface also includes: A crosstalk matrix between the experimental bits and the environmental bits is configured, where the crosstalk matrix is ​​used to calibrate the crosstalk effect of the environmental bits on the experimental bits.

7. The method according to claim 1, characterized in that The method further comprises: The second control in the first interface is triggered to stop the parallel experiment currently being executed.

8. A quantum control system, characterized in that: A method for executing a measurement and control experiment using the quantum chip described in any one of claims 1 to 7.

9. A quantum computer, characterized in that: Comprising the quantum control system as claimed in claim 8.

10. A readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, it can implement the execution method of the measurement and control experiment of the quantum chip described in any one of claims 1-7.

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