Passive round-robin differential-quadrature-phase-shift quantum key distribution scheme with untrusted detectors<xref rid="cpb_27_10_100309fn1" ref-type="fn">*</xref><fn id="cpb_27_10_100309fn1"><label>*</label><p>Project supported by the Fund from the State Key Laboratory of Information Photonics and Optical Communications (Beijing University of Posts and Telecommunications) (Grant No. IPOC2017ZT0).</p></fn>

Passive round-robin differential-quadrature-phase-shift quantum key distribution scheme with untrusted detectors**

Project supported by the Fund from the State Key Laboratory of Information Photonics and Optical Communications (Beijing University of Posts and Telecommunications) (Grant No. IPOC2017ZT0).

Liu Hongwei, Qu Wenxiu, Dou Tianqi, Wang Jipeng, Zhang Yong, Ma Haiqiang^†

(color online) Key rates versus transmission distance. (a) The rates for e_bit = 3%; (b) The rates for e_bit = 11% (solid line) and e_bit = 17% (dashed line). Lines labelled a–c represent the proposed protocol with L=128, 64, and 32, dashed line in panel (b) is the result when L=128.