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arXiv 0911.0697cond-mat.quant-gas
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相互作用玻色-玻色混合物中的晶格斜坡诱导动力学

Lattice-Ramp Induced Dynamics in an Interacting Bose-Bose Mixture

Julia Wernsdorfer, Michiel Snoek, Walter Hofstetter

摘要:

本文研究了零温和有限温下光晶格中两种相互作用粒子组成的玻色量子气体。利用Gutzwiller平均场方法得到了该系统的平衡态性质和动力学性质。特别是,我们最近的实验模型的光晶格的斜坡上升发生在一个时间尺度上的玻色子的隧穿时间。我们证明了违反绝热性的这个过程中的多体量子态,再现和解释的振荡的可见度作为一个函数的斜坡上升时间,如在实验中看到的。

英文摘要:

We investigate a bosonic quantum gas consisting of two interacting species in an optical lattice at zero and finite temperature. The equilibrium properties and dynamics of this system are obtained by means of the Gutzwiller mean-field method. In particular we model recent experiments where the ramp-up of the optical lattice occurs on a time scale comparable to the tunneling time of the bosons. We demonstrate the violation of adiabaticity of this process with respect to the many-body quantum states, and reproduce and explain the oscillations of the visibility as a function of ramp-up time, as seen in experiments.

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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