Open AccessFinite-key analysis for round-robin-differential-phase-shift quantum key distribution
Author(s) -
Huan Liu,
Zhen-Qiang Yin,
Rong Wang,
Feng-Yu Lu,
Shuang Wang,
Wei Chen,
Wei Huang,
Bingjie Xu,
GuangCan Guo,
ZhengFu Han
Publication year - 2020
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.391924
Subject(s) - quantum key distribution , information leakage , computer science , key (lock) , differential phase , quantum cryptography , quantum , quantum information , theoretical computer science , physics , quantum mechanics , computer network , telecommunications , computer security , keying
Since the round-robin-differential-phase-shift (RRDPS) quantum key distribution (QKD) protocol was proposed, it has attracted much attention due to its unique characteristic i.e., it can bind the amount of information leakage without monitoring signal disturbance. Recently, Yin et al. have developed a novel theory to estimate its information leakage tightly. However, the finite-sized key effects are not taken into account. Here, we fill this gap and extend the security proof of the RRDPS protocol to the finite-sized regime using post-selection technique. As a consequence, it's predicted that the key rate of RRDPS in a finite-sized key scenario can be comparable to the asymptotic one, which is meaningful for the real-life applications.