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arXiv quant-ph/0509025quant-ph
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原子相互作用对量子输运影响的实验研究

Experimental Study of the Role of Atomic Interactions on Quantum Transport

K. Henderson, H. Kelkar, B. Gutierrez-Medina, T. C. Li, M. G. Raizen

摘要:

本文报道了在周期势场中原子量子输运的实验研究,并比较了热初始条件和BEC初始条件。我们观察到弹道输运的所有值的井深和初始条件下,测得的热原子的膨胀速度是在一个很好的协议与单粒子模型。对于弱势阱,BEC的膨胀也与单粒子理论非常一致,使用有效温度。我们观察到一个交叉的BEC的情况下,作为一个新的制度,以及深度的增加,表明量子传输的相互作用的重要性。

英文摘要:

We report an experimental study of quantum transport for atoms confined in a periodic potential and compare between thermal and BEC initial conditions. We observe ballistic transport for all values of well depth and initial conditions, and the measured expansion velocity for thermal atoms is in excellent agreement with a single-particle model. For weak wells, the expansion of the BEC is also in excellent agreement with single-particle theory, using an effective temperature. We observe a crossover to a new regime for the BEC case as the well depth is increased, indicating the importance of interactions on quantum transport.

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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