Quantum state measurement method, device and system, equipment, and storage medium

Abstract

The invention provides a quantum state measurement method, device and system, equipment, and a storage medium, and relates to the field of quantum computing. According to the specific implementation scheme, a receiving end receives a to-be-processed quantum state from a quantum channel, wherein the to-be-processed quantum state is a quantum state obtained after a target unknown quantum state at a sending end is transmitted through the quantum channel; the quantum channel is obtained based on a quantum system shared by the receiving end and the sending end, and the quantum channel is related to a system quantum state of the quantum system; based on the system quantum state of the quantum system, the to-be-processed quantum state is decomposed to obtain a decomposition result, and the decomposition result at least comprises noise information which does not have an association relationship with the target unknown quantum state and target information which has an association relationship with the target unknown quantum state; and noise information in the decomposition result is removed, and target information associated with the target unknown quantum state is extracted to obtain a target measurement result for the target unknown quantum state. Therefore, over-distance 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...

AI Technical Summary

Problems solved by technology

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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