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Title: Optimized multiparty quantum clock synchronization

Abstract

A multiparty protocol for distributed quantum clock synchronization has been claimed to provide universal limits on the clock accuracy, viz., that accuracy monotonically decreases with the number n of party members. But this is only true for synchronization when one limits oneself to W states. This work shows that the usage of Z (Symmetric Dicke) states, a generalization of W states, results in improved accuracy, having a maximum when Left-Floor n/2 Right-Floor of its members have their qubits with a |1> eigenstate.

Authors:
;  [1]
  1. Software Engineering Department, Jerusalem College of Engineering, POB 3566, Jerusalem, 91035 (Israel)
Publication Date:
OSTI Identifier:
22058798
Resource Type:
Journal Article
Journal Name:
Physical Review. A
Additional Journal Information:
Journal Volume: 84; Journal Issue: 1; Other Information: (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1050-2947
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 74 ATOMIC AND MOLECULAR PHYSICS; ACCURACY; QUANTUM STATES; QUBITS; SYNCHRONIZATION; TIME MEASUREMENT

Citation Formats

Ben-Av, Radel, and Exman, Iaakov. Optimized multiparty quantum clock synchronization. United States: N. p., 2011. Web. doi:10.1103/PHYSREVA.84.014301.
Ben-Av, Radel, & Exman, Iaakov. Optimized multiparty quantum clock synchronization. United States. doi:10.1103/PHYSREVA.84.014301.
Ben-Av, Radel, and Exman, Iaakov. Fri . "Optimized multiparty quantum clock synchronization". United States. doi:10.1103/PHYSREVA.84.014301.
@article{osti_22058798,
title = {Optimized multiparty quantum clock synchronization},
author = {Ben-Av, Radel and Exman, Iaakov},
abstractNote = {A multiparty protocol for distributed quantum clock synchronization has been claimed to provide universal limits on the clock accuracy, viz., that accuracy monotonically decreases with the number n of party members. But this is only true for synchronization when one limits oneself to W states. This work shows that the usage of Z (Symmetric Dicke) states, a generalization of W states, results in improved accuracy, having a maximum when Left-Floor n/2 Right-Floor of its members have their qubits with a |1> eigenstate.},
doi = {10.1103/PHYSREVA.84.014301},
journal = {Physical Review. A},
issn = {1050-2947},
number = 1,
volume = 84,
place = {United States},
year = {2011},
month = {7}
}