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Open Physics

formerly Central European Journal of Physics

Editor-in-Chief: Seidel, Sally

Managing Editor: Lesna-Szreter, Paulina

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Volume 10, Issue 1

Issues

Volume 13 (2015)

Quantum discord between two moving two-level atoms

Yao-Hua Hu
  • Physics and Information Engineering College, Luoyang Normal College, Luoyang, 471022, Henan, Peoples Republic of China
  • Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education, Hunan Normal University, Changsha, 410081, Hunan, Peoples Republic of China
  • Email
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ Mao-Fa Fang
  • Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education, Hunan Normal University, Changsha, 410081, Hunan, Peoples Republic of China
  • Email
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
Published Online: 2011-12-03 | DOI: https://doi.org/10.2478/s11534-011-0076-6

Abstract

Considering a double JC model, this paper investigates the quantum discord dynamics of two isolated moving two-level atoms each interacting with a single-mode thermal cavity field, and studies the effect of the atomic motion and the field-mode structure on quantumdiscord. The results show that, on the one hand the quantum discord evolves periodically with time and the periods are affected by the atomic motion and the field-mode structure; on the other hand, the quantum discord still can capture the quantum correlation between the two atoms when the entanglement is zero. It is interesting to note that the quantum discord can be effectively preserved by controlling the field-mode structure parameter

Keywords: quantum discord; entanglement; double JC model; single-mode thermal field

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About the article

Published Online: 2011-12-03

Published in Print: 2012-02-01


Citation Information: Open Physics, Volume 10, Issue 1, Pages 145–150, ISSN (Online) 2391-5471, DOI: https://doi.org/10.2478/s11534-011-0076-6.

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