Quantum state measurement method, device, equipment, storage medium and system
A technology for measuring equipment and quantum states, which is applied in the field of quantum computing and data processing, can solve problems such as the inability to realize long-distance quantum data transmission, and achieve resource-efficient effects
Active Publication Date: 2022-02-01
BEIJING BAIDU NETCOM SCI & TECH CO LTD
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Considering the physical distance between different sites or laboratories, distributed quantum computing has become an important part of large-scale quantum computing. However, limited by current technology, reliable long-distance quantum data transmission cannot be achieved in the near future.
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[0030] Exemplary embodiments of the present disclosure are described below in conjunction with the accompanying drawings, which include various details of the embodiments of the present disclosure to facilitate understanding, and they should be regarded as exemplary only. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the disclosure. Also, descriptions of well-known functions and constructions are omitted in the following description for clarity and conciseness.
[0031] The calculation process of quantum computing usually ends with quantum measurement. Otherwise, the classical information of the calculation, that is, the calculation result, cannot be obtained. very critical. Quantum measurement can be regarded as a process in which a given observable (Observable), denoted as O, interacts with the unknown quantum state ρ to be m...
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The disclosure provides a quantum state measurement method, device, equipment, storage medium and system, and relates to the field of quantum computing. The specific implementation plan is: the receiving end receives the quantum state to be processed from the quantum channel, and the quantum state to be processed is the quantum state after the target unknown quantum state at the sending end is transmitted through the quantum channel; the quantum channel is based on the quantum state shared by the receiving end and the sending end. The quantum channel obtained by the system is related to the system quantum state of the quantum system; based on the system quantum state of the quantum system, the quantum state to be processed is decomposed to obtain the decomposition result, which at least includes no correlation with the target unknown quantum state The noise information of the target unknown quantum state and the target information associated with the target unknown quantum state; the noise information in the decomposition result is removed, and the target information associated with the target unknown quantum state is extracted to obtain the target unknown quantum state of the target measurement results. In this way, the remote measurement is realized.
Description
technical field [0001] The present disclosure relates to the technical field of data processing, in particular to the field of quantum computing. Background technique [0002] Quantum computing technology is constantly developing. Considering the physical distance between different sites or laboratories, distributed quantum computing has become an important part of large-scale quantum computing. However, limited by current technology, reliable long-distance quantum data transmission cannot be achieved in the near future. Therefore, a more practical distributed quantum computing solution is local operations and classical communication (LOCC, local operations and classical communication). Among them, quantum operations usually refer to quantum gates and quantum measurements acting on qubits, while local quantum operations mean that all parties can only perform quantum operations on qubits in their respective laboratories or sites; classical communication means that parties ca...
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IPC IPC(8): G06N10/20
CPCG06N10/00
Inventor 王鑫赵炫强赵犇池
Owner BEIJING BAIDU NETCOM SCI & TECH CO LTD