Quantum discord between two moving two-level atoms

• Authors: Yao-Hua Hu , Mao-Fa Fang
• Languages of publication: EN

Abstracts

EN

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

EN

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

• Publisher: De Gruyter Open
• Journal: Open Physics
• Year: 2012
• Volume: 10
• Issue: 1
• Pages: 145-150

Dates

published

1 - 2 - 2012

online

3 - 12 - 2011

Contributors

author

Yao-Hua Hu

author

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

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Identifiers

DOI

10.2478/s11534-011-0076-6