Continuous variable quantum key distribution

Li Yong-Min^{1, 2, †}, Wang Xu-Yang^{1, 2}, Bai Zeng-Liang^{1, 2}, Liu Wen-Yuan^{1, 2}, Yang Shen-Shen^{1, 2}, Peng Kun-Chi^{1, 2}

(color online) Experimental setup of 50-km CV QKD, where DAQ denotes the data acquisition module, AM the amplitude modulator, PM the phase modulator, PBS the polarizing beam splitter, DPC the dynamic polarization controller, MVOA the motor variable optical attenuator, and BHD the balanced homodyne detector.