Security proof of the BB84 protocol in practical implementation

Date/Time: 25th May 2006 - ()

Speaker: Dr. Yodai Watanabe (NII, Japan)

In this talk, we provide a security proof of the Bennett-Brassard 1984 (BB84) quantum key distribution protocol for arbitrary source and detector. The assumption in the security proof is that the source is characterized; that is, the proof requires no restrictions on the source and detector, and, moreover, the detector can be uncharacterized. The proof is performed by lower-bounding adversary's Renyi entropy about the key before privacy amplification.