Secure Deterministic Communication Without Entanglement

Details Secure Deterministic Communication Without Entanglement Secure Deterministic Communication Without Entanglement

2004-05-15

arxiv.org/abs/quant-ph/0405083v3

Phys. Rev. Lett. 94, 140501 (2005)

Physics

Quantum Physics

4 pages, 2 figures. Corrected typos in the field "Authors"; added one reference

Scientific paper

10.1103/PhysRevLett.94.140501

We propose a protocol for deterministic communication that does not make use of entanglement. It exploits nonorthogonal states in a two-way quantum channel attaining significant improvement of security and efficiency over already known cryptographic protocols. The presented scheme, being deterministic, can be devoted to direct communication as well as to key distribution, and its experimental realization is feasible with present day technology.

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