Two-way Protocol for Quantum Cryptography with Imperfect Devices

Lucamarini, M.; Cere', A.; Di Giuseppe, G.; Mancini, S.; Vitali, D.; Tombesi, P.

Two-way Protocol for Quantum Cryptography with Imperfect Devices

Authors

Description

The security of a deterministic quantum scheme for communication, namely the LM05 [1], is studied in presence of a lossy channel under the assumption of imperfect generation and detection of single photons. It is shown that the scheme allows for a rate of distillable secure bits higher than that pertaining to BB84 [2]. We report on a first implementation of LM05 with weak pulses.
10 pages, 3 figures. Uses OSID style