Open AccessDifferential-phase-shift quantum secret sharing
Author(s) -
Kyo Inoue,
Takuma Ohashi,
Tatsuya Kukita,
K. Watanebe,
Satoru Hayashi,
Toshimori Honjo,
Hiroki Takesue
Publication year - 2008
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.16.015469
Subject(s) - differential phase , computer science , quantum key distribution , transmission (telecommunications) , photon , optics , phase (matter) , quantum , key (lock) , quantum channel , physics , quantum information , quantum mechanics , telecommunications , computer security
A quantum secret sharing (QSS) protocol based on a differential-phase-shift scheme is proposed, which quantum mechanically provides a full secret key to one party and partial keys to two other parties. A weak coherent pulse train is utilized instead of individual photons as in conventional schemes. Compared with previous QSS protocols, the present one features a simple setup, is suitable for fiber transmission, and offers the possibility for a high key creation rate. An experiment is also carried out to demonstrate the operation.