Open AccessFeasibility of twin-field quantum key distribution based on multi-mode coherent phase-coded states
Author(s) -
Vladimir Chistiakov,
Anton Kozubov,
Andrei Gaidash,
A.V. Gleim,
G. P. Miroshnichenko
Publication year - 2019
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.27.036551
Subject(s) - quantum key distribution , coherent states , computer science , quantum channel , lossy compression , key (lock) , quantum cryptography , quantum , electronic engineering , physics , topology (electrical circuits) , algorithm , quantum information , quantum mechanics , mathematics , computer security , combinatorics , artificial intelligence , engineering
In this paper we propose feasibility demonstration of twin-field quantum key ditribution system based on multi-mode weak coherent phase-coded states. Their utilization provides indisputable advantages described in the paper. We also provide the detailed description of nontrivial interference scheme for those states and derive detection and quantum bit error rates. Since we propose the feasibility scheme we present in this paper only asymptotic secure key estimation and show that in principle it can beat well-known fundamental limit of repeaterless quantum communications , i.e., the secret key capacity of the lossy communication channel. Also we present here the experimental setup and provide the experimental values of detection rates dependence on the modulation signals phase difference.