Quantum secure direct communication with quantum encryption based on pure entangled states

Details Quantum secure direct communication with quantum encryption based on pure entangled states Quantum secure direct communication with quantum encryption based on pure entangled states

2005-12-02

arxiv.org/abs/quant-ph/0512014v2

Chinese Physics 16, 2149-2153 (2007)

Physics

Quantum Physics

4 pages, no figure

Scientific paper

We present a scheme for quantum secure direct communication with quantum encryption. The two authorized users use repeatedly a sequence of the pure entangled pairs (quantum key) shared for encrypting and decrypting the secret message carried by the traveling photons directly. For checking eavesdropping, the two parties perform the single-photon measurements on some decoy particles before each round. This scheme has the advantage that the pure entangled quantum signal source is feasible at present and any eavesdropper cannot steal the message.

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