期刊
OPTICS EXPRESS
卷 23, 期 13, 页码 17511-17519出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.23.017511
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资金
- National Natural Science Foundation of China [61170228, 61332019, 61471239]
- Hi-Tech Research and Development Program of China [2013AA122901]
- China Postdoctoral Science Foundation [2013M540365]
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. (C) 2015 Optical Society of America
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