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

• 来源期刊: 中国物理B（英文版）
• 关键词: quantum key distribution round-robin-differential-phase-shift untrusted detector
• 年，卷（期）: 2018,（10）
• 页码范围: 104-112
• 页数: 9页
• 语种: 英文
• DOI: 10.1088/1674-1056/27/10/100309

摘要

In this paper, we proposed the scheme for a passive round-robin differential-phase-shift quantum key distribution (RRDPS-QKD) set-up based on the principle of Hong–Ou–Mandel interference. Our scheme requires two legitimate parties to prepare their signal state with two different non-orthogonal bases instead of single in original protocol. Incorporating this characteristic, we establish the level of security of our protocol under the intercept-resend attack and demonstrate its detector-flaw-immune feature. Furthermore, we show that our scheme not only inherits the merit of better tolerance of bit errors and finite-sized-key effects but can be implemented using hardware similar to the measurement device independent QKD (MDI-QKD). This ensures good compatibility with the current commonly used quantum system.