title: High performance frame synchronization for continuous variable quantum key distribution systems.
abstract: Considering a practical continuous variable quantum key distribution(CVQKD) system, synchronization is of significant importance as it is hardly possible to extract secret keys from unsynchronized strings. In this paper, we proposed a high performance frame synchronization method for CVQKD systems which is capable to operate under low signal-to-noise(SNR) ratios and is compatible with random phase shift induced by quantum channel. A practical implementation of this method with low complexity is presented and its performance is analysed. By adjusting the length of synchronization frame, this method can work well with large range of SNR values which paves the way for longer distance CVQKD.
authors.forename: Dakai
authors.initials: D
authors.lastname: Lin
authors.forename: Peng
authors.initials: P
authors.lastname: Huang
authors.forename: Duan
authors.initials: D
authors.lastname: Huang
authors.forename: Chao
authors.initials: C
authors.lastname: Wang
authors.forename: Jinye
authors.initials: J
authors.lastname: Peng
authors.forename: Guihua
authors.initials: G
authors.lastname: Zeng