Affordable Access

Access to the full text

Control of two-atom entanglement with two thermal fields in coupled cavities

Authors
  • Shen, Li-Tuo
  • Yang, Zhen-Biao
  • Wu, Huai-Zhi
  • Chen, Xin-Yu
  • Zheng, Shi-Biao
Type
Published Article
Publication Date
Jul 12, 2012
Submission Date
Jul 12, 2012
Identifiers
DOI: 10.1364/JOSAB.29.002379
Source
arXiv
License
Yellow
External links

Abstract

The dynamical evolution of a quantum system composed of two coupled cavities, each containing a two-level atom and a single-mode thermal field, is investigated under different conditions. The entanglement between the two atoms is controlled by the hopping strength and the detuning between the atomic transition and the cavities. We find that when the atomic transition is far off-resonant with both the eigenmodes of the coupled cavity system, the maximally entangled state for the two atoms can be generated with the initial state in which one atom is in the ground state and the other is in the excited state. When both the two atoms are initially in the excited state, the entanglement exhibits period sudden birth and death. By choosing appropriate parameter values, the initial maximal entanglement of the two atoms can be frozen. The relation between the concurrence and cooperative parameter is calculated.

Report this publication

Statistics

Seen <100 times