Two-way Protocol for Quantum Cryptography with Imperfect Devices

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

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Two-way Protocol for Quantum Cryptography with Imperfect Devices

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

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Abstract

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.

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M. Lucamarini, A. Cere', G. Di Giuseppe, S. Mancini, D. Vitali, P. Tombesi. 2006-05-11. Two-way Protocol for Quantum Cryptography with Imperfect Devices. https://arxiv.org/abs/quant-ph/0605106

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