SUBRECOIL LASER COOLING AND LEVY FLIGHTS
SUBRECOIL LASER COOLING AND LEVY FLIGHTS
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DOI：
10.1103/physrevlett.72.203
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发表时间：
1994-01-10
影响因子：
8.6
通讯作者：
COHENTANNOUDJI, C
中科院分区：
文献类型：
--
作者：
BARDOU, F;BOUCHAUD, JP;COHENTANNOUDJI, C
由罕见事件主导的反常扩散过程被证明是存在的，并且在某些亚反冲激光冷却方案中起着中心作用。我们提出了一种新的基于Levy飞行的统计分析，它提供了长时间内冷却原子的精确的解析描述，其中标准的量子光学方法是不合适的。通过与中间时间冷却过程的量子蒙特卡罗模拟结果的比较，这些分析预测得到了定量的验证。
Anomalous diffusion processes, dominated by rare events, are shown to exist and to play a central role in certain subrecoil laser cooling schemes. We present a new statistical analysis of these processes, in terms of Levy flights, which provides a precise analytical description of the cooled atoms in the long time limit, where the standard methods of quantum optics are inappropriate. These analytical predictions are quantitatively checked by comparison with the results of quantum Monte Carlo simulations of the cooling process at intermediate times.