Recovery of classically chaotic behavior in a noise-driven quantum system.
Recovery of classically chaotic behavior in a noise-driven quantum system.
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DOI：
10.1103/physreve.61.7223
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发表时间：
2000-06
期刊：
影响因子：
--
通讯作者：
V. Milner;D. Steck;W. Oskay;M. Raizen
中科院分区：
文献类型：
--
作者：
V. Milner;D. Steck;W. Oskay;M. Raizen
研究了高振幅噪声环境下的量子踢动转子。当以抑制扩散和指数动量分布为特征的动力局域化完全被噪声破坏时，观察到向扩散行为的过渡。通过精确的定量分析表明，随着噪声幅值的增加，进一步向经典行为过渡，表明能量增长和动量分布都达到了经典极限。讨论了短时相关在恢复经典混沌行为中的重要性。
The quantum kicked rotor is studied in a regime of high amplitude noise. A transition to diffusive behavior is observed as dynamical localization, characterized by suppressed diffusion and exponential momentum distributions, is completely destroyed by noise. With increasing noise amplitude, further transition to classical behavior is shown through an accurate quantitative analysis, which demonstrates that both the energy growth and the momentum distributions are reaching their classical limits. The importance of short-time correlations in the recovery of classically chaotic behavior is discussed.