Issue
EPL
Volume 80, Number 6, December 2007
Article Number 60001
Number of page(s) 6
Section General
DOI http://dx.doi.org/10.1209/0295-5075/80/60001
Published online 05 November 2007
EPL, 80 (2007) 60001
DOI: 10.1209/0295-5075/80/60001

Quantum computation and entangled-state generation through adiabatic evolution in two distant cavities

Jie Song, Yan Xia, He-Shan Song, Jin-Liang Guo and Jing Nie

School of Physics and Optoelectronic Technology, Dalian University of Technology - Dalian 116024, China

hssong@dlut.edu.cn

received 23 May 2007; accepted in final form 12 October 2007; published December 2007
published online 5 November 2007

Abstract
A protocol is proposed to implement nongeometric phase gates and generate entangled states by the adiabatic evolution of dark states in two distant cavities. The influence of various decoherence processes such as spontaneous emission and photon loss on the fidelity and success probability is also discussed. And this protocol can be generalized to generate N-atom entangled states.

PACS
03.67.Hk - Quantum communication.
03.65.Ud - Entanglement and quantum nonlocality (e.g. EPR paradox, Bell's inequalities, GHZ states, etc.).

© Europhysics Letters Association 2007