Device-independent entanglement-based Bennett 1992 protocol

Details Device-independent entanglement-based Bennett 1992 protocol Device-independent entanglement-based Bennett 1992 protocol

2011-11-08

arxiv.org/abs/1111.1997v2

Physics

Quantum Physics

7 pages, 3 figures. In the 2nd version, the analysis of the efficiency of the scheme has been added

Scientific paper

In this paper we set forth a novel connection between the Bennett 1992 protocol and a Bell inequality. This allows us to extend the usual prepare-and-measure protocol to its entanglement-based formulation. We exploit a recent result in the frame of device-independent quantum key distribution to provide a simple, model-independent, security proof for the new protocol. The minimum efficiency required for a practical implementation of the scheme is the lowest reported to date.

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