Continuous-variable quantum key distribution based on continuous random basis choice<xref rid="cpb_27_7_070305fn1" ref-type="fn">*</xref><fn id="cpb_27_7_070305fn1"> <label>*</label><p>Project supported by the National Natural Science Foundation of China (Grant Nos. 61332019, 61671287, and 61631014), Northwest University Doctorate Dissertation of Excellence Funds, China (Grant No. YYB17022), and the National Key Research and Development Program, China (Grant No. 2016YFA0302600).</p></fn>

Continuous-variable quantum key distribution based on continuous random basis choice* *

Project supported by the National Natural Science Foundation of China (Grant Nos. 61332019, 61671287, and 61631014), Northwest University Doctorate Dissertation of Excellence Funds, China (Grant No. YYB17022), and the National Key Research and Development Program, China (Grant No. 2016YFA0302600).

Liu Weiqi¹, Peng Jinye¹, Huang Peng^{2, †}, Wang Shiyu², Wang Tao², Zeng Guihua^{1, 2, ‡}

(color online) The secret key rate as a function of the transmission distance of optical fiber with loss coeffiency 0.2 dB/km for different degrees of imperfection of continuous random basis choice (perfect basis choice corresponds to κ = 1). The curves without the marked points from right to left represent the secret key rates for κ = 1, 0.997, 0.993, and 0.98, respectively. The red marked curve represents the result of eliminating the imperfections by our phase compensation algorithm.