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) Equivalent model of measurement. Bob obtains a click at position i or j, and generates two random numbers r ∈ {1, . . ., L − 1} and b ∈ {0,1} to obtain j = i + (− 1)^br or i = j + (−1)^br, and publicly announces i and j to Alice.