Bit Transmission Probability Maximizing the Key Rate of the BB84 Protocol

Published 11 Mar 2010 in quant-ph | (1003.2247v1)

Abstract: In all papers on the BB84 protocol, the transmission probability of each bit value is usually set to be equal. In this paper, we show that by assigning different transmission probability to each transmitted qubit within a single polarization basis, we can generally improve the key generation rate of the BB84 protocol and achieve a higher key rate.

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