Single photon based measurement device independent quantum communication system

Abstract

Embodiments of the present invention provide a single photon based measurement device independent quantum communication system. The single photon based measurement device independent quantum communication system includes a transmitting end, a receiving end, and a third party; the transmitting end and the receiving end respectively prepare a first photo subsequence and a third photo subsequence forsecurity detection and send the first photo subsequence and the third photo subsequence to the third party for measurement, and then the transmitting end and the receiving end perform security detection according to the measurement result; after the security detection is passed, the transmitting end loads the information to be transmitted into a pre-constructed second photonic sequence, and transmits the information to the third party; the third party transmits a measurement result of the second photo subsequence to the receiving end so as to complete a communication process. The system can still achieve the absolute communication security guaranteed by the physical law while the measurement job is completely handed over to the third party, and ensures that only the receiving end can decode information transmitted by the transmitting end from information announced from the last third party.

Description

technical field [0001] The embodiments of the present invention relate to the field of quantum communication, and in particular to a quantum communication system based on a single photon that is independent of measurement equipment. Background technique [0002] As a kind of quantum communication protocol, the quantum safe direct communication protocol has achieved a series of important developments since it was proposed in 2000, for example, the quantum safe direct communication based on entangled photon pairs (LL00 protocol) single photon (DL04 protocol) Agreements were proposed one after another. Although, in an ideal state, the security of quantum-safe direct communication can be effectively guaranteed, but in the actual implementation process, due to the relevant requirements of the communication protocol that the device equipment cannot meet, quantum hackers have an opportunity to take advantage of it. Among them, the attack on the measurement device is relatively sim...

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Problems solved by technology

[0004] The embodiment of the present invention provides a single-photon-based measurement device-independent quantum communication system, which is used to solve the problem that the research on the quantum-safe direct communication protocol that the measurement of the quantum communication light source is handed over to a third party in the prior art is still in a blank stage. During the implementation of the quantum-safe direct communication protocol, it is easy to threaten the security of the communication due to the attack on the measurement equipment

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