Facilitating quantum tomography

Patent metadata

Field	Value
Publication number	US-10885678-B2
Application number	US-201715720841-A
Country	US
Kind code	B2
Filing date	Sep 29, 2017
Priority date	Sep 29, 2017
Publication date	Jan 5, 2021
Grant date	Jan 5, 2021

Abstract

Techniques for facilitating quantum tomography are provided. In one example, a system includes a circuit generation component and a tomography analysis component. The circuit generation component generates tomography experiment data indicative of information for a set of tomography experiments based on quantum circuit data indicative of a machine-readable description of a quantum circuit. The tomography analysis component generates tomogram data based on experimental result data indicative of information associated with the tomography experiment data.

First claim

What is claimed is:

1. A system, comprising:
a memory that stores computer executable components;
a processor that executes computer executable components stored in the memory, wherein the computer executable components comprise:
a circuit generation component that generates tomography experiment data describing a set of tomography experiments to execute on a quantum circuit based on quantum circuit data comprising a machine-readable description of the quantum circuit, wherein the machine-readable description of the quantum circuit comprises textual data describing one or more qubit gates of the quantum circuit, and the textual data is in a quantum assembly language format, and wherein the quantum circuit data further comprises marker data comprising one or more marker elements that tag one or more locations of the one or more qubit gates of the quantum circuit associated with one or more qubits,
a tomography analysis component that generates tomogram data based on experimental result data associated with execution of the tomography experiment data and based on the marker data, wherein the tomogram data comprises information that describes results of the set of tomography experiments, information associated with a quantum state and reporting data indicative of error reporting, and wherein the reporting data is included in metadata generated in response to execution of the set of tomography experiments; and
a tomography display component that provides an application programming interface to render the tomogram data as a graphical tomogram.

2. The system of claim 1 , wherein the circuit generation component generates calibration experiment data describing a set of calibration experiments to execute on the quantum circuit based on the quantum circuit data.

3. The system of claim 1 , wherein the set of tomography experiments comprises:
a first tomography experiment that determines an x-component measurement of a quantum bit of the quantum circuit;
a second tomography experiment that determines a y-component measurement of a quantum bit of the quantum circuit;
a third tomography experiment that determines a z-component measurement of a quantum bit of the quantum circuit.

4. The system of claim 1 , wherein the circuit generation component generates the tomography experiment data based on the marker data.

5. The system of claim 1 , wherein the tomography analysis component processes a set of results in response to the execution of the tomography experiment data to generate the experimental result data.

6. The system of claim 1 , wherein the tomography analysis component generates reporting data for error reporting or quality reports associated with the tomogram data.

7. The system of claim 1 , wherein the tomography display component provides the graphical tomogram as a visual representation of a qubit.

8. The system of claim 1 , wherein the tomogram data generated by the tomography analysis component provides improved processing performance of the quantum circuit.

9. A computer-implemented method, comprising:
generating, by a system operatively coupled to a processor, tomography experiment data describing a set of tomography experiments to execute on a quantum circuit based on quantum circuit data comprising a machine-readable description of the quantum circuit, wherein the machine-readable description of the quantum circuit comprises textual data describing one or more qubit gates of the quantum circuit, and the textual data is in a quantum assembly language format, and wherein the quantum circuit data further comprises marker data comprising one or more marker elements that tag one or more locations of the one or more qubit gates of the quantum circuit associated with one or more qubits, wherein the tomogram data comprises information that describes results of the set of tomography experiments and reporting data indicative of error reporting, and wherein the reporting data is included in metadata generated in response to execution of the set of tomography experiments;
executing, by the system, the tomography experiment data;
generating, by the system, tomogram data based on experimental result data associated with the executing of the tomography experiment data; and
rendering, by the system, an application programming interface to provide the tomogram data as a graphical tomogram.

10. The computer-implemented method of claim 9 , wherein the executing comprises executing the tomography experiment data via a quantum simulator.

11. The computer-implemented method of claim 9 , wherein the executing comprises executing the tomography experiment data via a quantum processor.

12. The computer-implemented method of claim 9 , wherein the set of tomography experiments comprises:
a first tomography experiment that determines an x-component measurement of a quantum bit of the quantum circuit;
a second tomography experiment that determines a y-component measurement of a quantum bit of the quantum circuit;
a third tomography experiment that determines a z-component measurement of a quantum bit of the quantum circuit.

13. The computer-implemented method of claim 9 ,
wherein the generating the tomography experiment data comprises generating the tomography experiment data based on the marker data.

14. The computer-implemented method of claim 9 , further comprising:
receiving, by the system, the experimental result data via the application programming interface.

15. The computer-implemented method of claim 9 , wherein the rendering comprises providing the graphical tomogram as a visual representation of a Bloch sphere associated with a qubit.

16. The computer-implemented method of claim 9 , wherein the generating the tomogram data provides improved processing characteristics of the quantum circuit.

17. A computer program product for facilitating quantum tomography, the computer program product comprising a computer readable storage medium having program instructions embodied therewith, the program instructions executable by a processor to cause the processor to:
generate, by the processor, tomography experiment data describing a set of tomography experiments to execute on a quantum circuit based on quantum circuit data comprising a machine-readable description of the quantum circuit, wherein the machine-readable description of the quantum circuit comprises textual data describing one or more qubit gates of the quantum circuit, and the textual data is in a quantum assembly language format, and wherein the quantum circuit data further comprises marker data comprising one or more marker elements that tag one or more locations of the one or more qubit gates of the quantum circuit associated with one or more qubits, wherein the tomogram data is generated based on artificial intelligence automatic classifications that determine the tomogram data and the processor employs statistical-based analysis to generate inferences with regard to the set of tomography experiments;
generate, by the processor, tomogram data based on experimental result data associated with execution of the tomography experiment data; and
render, by the processor, a graphical representation of the tomogram data on a display device.

18. The computer program product of claim 17 , wherein the program instructions are further executable by the processor to cause the processor to:
receive, by the processor, the experimental result data via an application programming interface.

19. The computer program product of claim 17 , wherein the program instructions are further executable b

Assignees

• IBM

Inventors

• Bishop Lev Samuel
• Cross Andrew W
• Gambetta Jay M

Classifications

• G06T12/10 Primary

  Image preprocessing, e.g. calibration, positioning of sources or scatter correction · CPC title

• G06N10/80

  Quantum programming, e.g. interfaces, languages or software-development kits for creating or handling programs capable of running on quantum computers; Platforms for simulating or accessing quantum computers, e.g. cloud-based quantum computing · CPC title

• G06N10/20

  Models of quantum computing, e.g. quantum circuits or universal quantum computers · CPC title

• G06N10/60 Primary

  Quantum algorithms, e.g. based on quantum optimisation, quantum Fourier or Hadamard transforms · CPC title

• G06N20/00

  Machine learning · CPC title