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arXiv quant-ph/0309209quant-ph
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Sisyphus冷却中原子速度的阻尼率

Damping rates of the atomic velocity in Sisyphus cooling

Laurent Sanchez-Palencia, Michele Schiavoni, Francois-Regis Carminati, Ferruccio Renzoni, Gilbert Grynberg

摘要:

本文从理论和实验上研究了西西弗斯冷却中原子速度的阻尼过程。测定了三维线性$\perp$线性光晶格的原子动力学温度的弛豫速率。我们发现,对于一定的势阱深度,原子温度的阻尼率与光抽运率呈线性关系。这与从布朗运动模型内的空间扩散系数计算的摩擦系数的行为不同。这种不同行为的起源是通过区分被困和旅行原子的作用来确定的。

英文摘要:

We present a theoretical and experimental study of the damping process of the atomic velocity in Sisyphus cooling. The relaxation rates of the atomic kinetic temperature are determined for a 3D lin$\perp$lin optical lattice. We find that the damping rates of the atomic temperature depend linearly on the optical pumping rate, for a given depth of the potential wells. This is at variance with the behavior of the friction coefficient as calculated from the spatial diffusion coefficients within a model of Brownian motion. The origin of this different behavior is identified by distinguishing the role of the trapped and traveling atoms.

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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