In this paper we set forth a 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 framework of device-independent quantum key distribution to provide a simple, model-independent, security proof for the protocol. The minimum efficiency required for a practical implementation of the scheme can be as low as 75% in the completely untrusted case and 50% in case the sender is assumed to be trusted. © 2012 American Physical Society.
Lucamarini, M., Vallone, G., Gianani, I., Mataloni, P., Di Giuseppe, G. (2012). Device-independent entanglement-based Bennett 1992 protocol. PHYSICAL REVIEW A, 86(3) [10.1103/PhysRevA.86.032325].
Device-independent entanglement-based Bennett 1992 protocol
Gianani I.;Di Giuseppe G.
2012-01-01
Abstract
In this paper we set forth a 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 framework of device-independent quantum key distribution to provide a simple, model-independent, security proof for the protocol. The minimum efficiency required for a practical implementation of the scheme can be as low as 75% in the completely untrusted case and 50% in case the sender is assumed to be trusted. © 2012 American Physical Society.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
