Deterministic Plug-and-Play for Quantum Communication

Details Deterministic Plug-and-Play for Quantum Communication Deterministic Plug-and-Play for Quantum Communication

2004-07-29

arxiv.org/abs/quant-ph/0407256v2

Int. J. Quant. Inf. 3, 189 (2005)

Physics

Quantum Physics

4 pages, 2 figures; one reference updated

Scientific paper

We present a scheme for secure deterministic quantum communication without using entanglement, in a Plug-and-Play fashion. The protocol is completely deterministic, both in the encoding procedure and in the control one, thus doubling the communication rate with respect to other setups; moreover, deterministic nature of transmission, apart from rendering unnecessary bases revelation on the public channel, allows the realization of protocols like `direct communication' and `quantum dialogue'. The encoding exploits the phase degree of freedom of a photon, thus paving the way to an optical fiber implementation, feasible with present day technology.

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