title: Continuous-variable quantum key distribution with 1 Mbps secure key rate.
abstract: We report the first continuous-variable quantum key distribution (CVQKD) experiment to enable the creation of 1 Mbps secure key rate over 25 km standard telecom fiber in a coarse wavelength division multiplexers (CWDM) environment. The result is achieved with two major technological advances: the use of a 1 GHz shot-noise-limited homodyne detector and the implementation of a 50 MHz clock system. The excess noise due to noise photons from local oscillator and classical data channels in CWDM is controlled effectively. We note that the experimental verification of high-bit-rate CVQKD in the multiplexing environment is a significant step closer toward large-scale deployment in fiber networks.
authors.forename: Duan
authors.initials: D
authors.lastname: Huang
authors.forename: Dakai
authors.initials: D
authors.lastname: Lin
authors.forename: Chao
authors.initials: C
authors.lastname: Wang
authors.forename: Weiqi
authors.initials: W
authors.lastname: Liu
authors.forename: Shuanghong
authors.initials: S
authors.lastname: Fang
authors.forename: Jinye
authors.initials: J
authors.lastname: Peng
authors.forename: Peng
authors.initials: P
authors.lastname: Huang
authors.forename: Guihua
authors.initials: G
authors.lastname: Zeng