a Institute of Theoretical Physics, Shanxi University, Taiyuan 030006, China; b State Key Laboratory of Magnetism, Institute of Physics and Centre for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100080, China
Abstract We examine analytically the generation of Bell state in Bose condensates of two interacting species trapped in a double well configuration. The density of probability for finding the entangled Bell state is given. The effect of the tunnelling rate and the interspecies interaction strength on the generation of Bell state is discussed. We find that the oscillation amplitude of the density of probability for finding the entangled Bell state becomes greater as the tunnelling rate $\varOmega$ increases, and the self-interaction strength of the component A(B) has no effect on it.
Received: 03 November 2003
Revised: 01 December 2003
Accepted manuscript online:
PACS:
37.10.Vz
(Mechanical effects of light on atoms, molecules, and ions)
(Tunneling, Josephson effect, Bose-Einstein condensates in periodic potentials, solitons, vortices, and topological excitations)
Fund: Project supported by the National Natural Science Foundation of China (Grant No 10075032).
Cite this article:
Zhang Guo-Feng (张国锋), Yin Wen (殷雯), Liang Jiu-Qing (梁九卿), Yan Qi-Wei (严启伟) Generation of Bell states in two-component Bose－Einstein condensates 2004 Chinese Physics 13 988
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