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arXiv 0705.2319cond-mat.stat-mech
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光学超晶格中玻色-爱因斯坦凝聚体的相干性质

Coherence Properties of a Bose-Einstein Condensate in an Optical Superlattice

Aranya B Bhattacherjee

摘要:

研究了一维光学超晶格对Mott绝缘体的超流分数、数压缩、动力学结构因子和准动量分布的影响。我们发现,由于二次晶格,有一个超流分数和数量波动的减少。由于二次晶格的加入,可以通过布拉格光谱测量的动态结构因子也被抑制。莫特绝缘体的干涉图案(准动量分布)的可见性被发现由于二次晶格的存在而降低。我们的结果对光晶格中的原子干涉和量子计算具有重要的意义。

英文摘要:

We study the effect of a one dimensional optical superlattice on the superfluid fraction, number squeezing, dynamic structure factor and the quasi-momentum distribution of the Mott-insulator. We show that due to the secondary lattice,there is a decrease in the superfluid fraction and the number fluctuation. The dynamic structure factor which can be measured by Bragg spectroscopy is also suppressed due to the addition of the secondary lattice. The visibility of the interference pattern (the quasi-momentum distribution)of the Mott-insulator is found to decrease due to the presence of the secondary lattice. Our results have important implications in atom interferometry and quantum computation in optical lattices.

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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