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arXiv quant-ph/0507050quant-ph
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利用两个耦合的玻色-爱因斯坦凝聚体产生广义相干态

Generation of generalized coherent states with two coupled Bose-Einstein condensates

L. Sanz, M. H. Y. Moussa, K. Furuya

摘要:

提出了一个在两种玻色-爱因斯坦凝聚体系统中制备广义相干态的方案。首先,在双模近似下,我们证明了薛定谔猫可以动态生成,通过控制约瑟夫森耦合强度,可以改变叠加相干态的数量。随后,我们数值分析了当物种间碰撞被抑制时整个系统的动力学。通过引入分数布居数、Mandel参数、湮没方差和数算符等变量,证明了演化态是纠缠态,并呈现亚泊松统计。

英文摘要:

We present a scheme to prepare generalized coherent states in a system with two species of Bose-Einstein condensates. First, within the two-mode approximation, we demonstrate that a Schrodinger cat-like can be dynamically generated and, by controlling the Josephson-like coupling strength, the number of coherent states in the superposition can be varied. Later, we analyze numerically the dynamics of the whole system when interspecies collisions are inhibited. Variables such as fractional population, Mandel parameter and variances of annihilation and number operators are used to show that the evolved state is entangled and exhibits sub-Poisson statistics.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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