Quantum secure direct communication method irrelevant to measurement equipment in high-dimensional subspace
A technology of secure direct communication and measurement equipment, applied in the field of quantum secure direct communication, can solve the problems of security loopholes, low QSDC channel capacity, etc., and achieve the effect of increasing channel capacity
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[0015] In order to facilitate those of ordinary skill in the art to understand and implement the present invention, the present invention will be further described in detail and in-depth below in conjunction with the accompanying drawings.
[0016] Such as figure 1 As shown, Alice and Bob communicate, Alice is the sender, Bob is the receiver, Charlie is an untrusted third party, and Charlie performs Bell state measurement (BSM) on the sequence sent by Alice and Bob. There are N beam splitters (Beam Splitter, BS) arranged on Charlie, and each beam splitter corresponds to two detectors. The number of the detector corresponding to Alice’s side is an odd number, and the number corresponding to the number of the detector on Bob’s side is an even number. Such as figure 1 In the structure shown, both Alice and Bob have N channels to choose from. Combine below figure 1 To illustrate the high-dimensional measurement device-independent quantum-safe direct communication method of the...
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