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Title: Generation of maximally entangled mixed states of two atoms via on-resonance asymmetric atom-cavity couplings

Abstract

A scheme for generating the maximally entangled mixed state of two atoms on-resonance asymmetrically coupled to a single mode optical cavity field is presented. The part frontier of both maximally entangled mixed states and maximal Bell violating mixed states can be approximately reached by the evolving reduced density matrix of two atoms if the ratio of coupling strengths of two atoms is appropriately controlled. It is also shown that exchange symmetry of global maximal concurrence is broken if and only if coupling strength ratio lies between ({radical}(3)/3) and {radical}(3) for the case of one-particle excitation and asymmetric coupling, while this partial symmetry breaking cannot be verified by detecting maximal Bell violation.

Authors:
 [1]
  1. Shanghai Research Center of Amertron-global, Zhangjiang High-Tech Park, 299 Lane, Bisheng Road, No. 3, Suite 202, Shanghai 201204 (China)
Publication Date:
OSTI Identifier:
20982603
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. A; Journal Volume: 75; Journal Issue: 5; Other Information: DOI: 10.1103/PhysRevA.75.054304; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; ASYMMETRY; ATOMS; BELL THEOREM; COUPLING; COUPLINGS; DENSITY MATRIX; EXCITATION; MIXED STATE; OPTICAL MODES; QUANTUM ENTANGLEMENT; RESONANCE; SYMMETRY; SYMMETRY BREAKING

Citation Formats

Li, Shang-Bin. Generation of maximally entangled mixed states of two atoms via on-resonance asymmetric atom-cavity couplings. United States: N. p., 2007. Web. doi:10.1103/PHYSREVA.75.054304.
Li, Shang-Bin. Generation of maximally entangled mixed states of two atoms via on-resonance asymmetric atom-cavity couplings. United States. doi:10.1103/PHYSREVA.75.054304.
Li, Shang-Bin. Tue . "Generation of maximally entangled mixed states of two atoms via on-resonance asymmetric atom-cavity couplings". United States. doi:10.1103/PHYSREVA.75.054304.
@article{osti_20982603,
title = {Generation of maximally entangled mixed states of two atoms via on-resonance asymmetric atom-cavity couplings},
author = {Li, Shang-Bin},
abstractNote = {A scheme for generating the maximally entangled mixed state of two atoms on-resonance asymmetrically coupled to a single mode optical cavity field is presented. The part frontier of both maximally entangled mixed states and maximal Bell violating mixed states can be approximately reached by the evolving reduced density matrix of two atoms if the ratio of coupling strengths of two atoms is appropriately controlled. It is also shown that exchange symmetry of global maximal concurrence is broken if and only if coupling strength ratio lies between ({radical}(3)/3) and {radical}(3) for the case of one-particle excitation and asymmetric coupling, while this partial symmetry breaking cannot be verified by detecting maximal Bell violation.},
doi = {10.1103/PHYSREVA.75.054304},
journal = {Physical Review. A},
number = 5,
volume = 75,
place = {United States},
year = {Tue May 15 00:00:00 EDT 2007},
month = {Tue May 15 00:00:00 EDT 2007}
}
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