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.
Device-independent entanglement-based Bennett 1992 protocol / Marco, Lucamarini; Giuseppe, Vallone; Ilaria, Gianani; Mataloni, Paolo; Giovanni Di, Giuseppe. - In: PHYSICAL REVIEW A. - ISSN 1050-2947. - 86:3(2012). [10.1103/physreva.86.032325]
Device-independent entanglement-based Bennett 1992 protocol
MATALONI, Paolo;
2012
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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
