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arXiv quant-ph/0009003quant-phcond-mat
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耦合量子耗散振子对中的退相干、关联和纠缠

Decoherence, Correlation, and Entanglement in a Pair of Coupled Quantum Dissipative Oscillators

A. K. Rajagopal, R. W. Rendell

摘要:

一对耦合的量子耗散振荡器,作为一个模型的纳米系统,在这里描述的林德布拉德方程。它的动态演化表现出退相干(量子行为的空间范围),相关性(空间尺度,系统本地化到其物理尺寸),和纠缠(一个特殊的量子功能,使其首次出现在这样的二分系统)作为一个功能的耦合常数的林德布拉德方程的功能。从这个计算中出现的一个有趣的特征是,纠缠可能会在时间上表现出复兴。一个初始纠缠态不需要一直保持纠缠态,它可以表现出非纠缠的区域。在某些实验条件下,将Lindblad理论的参数解释为环境特征,该模型计算为我们提供了可能控制退相干、相关和纠缠的线索。我们表明可能的解释Lindblad参数作为控制参数在更一般的情况下,最近的一些实验。

英文摘要:

A pair of coupled quantum dissipative oscillators, serving as a model for a nanosystem, is here described by the Lindblad equation. Its dynamic evolution is shown to exhibit the features of decoherence (spatial extent of quantum behavior), correlation (spatial scale over which the system localizes to its physical dimensions), and entanglement (a special quantum feature making its appearance first in such bipartite systems) as a function of the coupling constants of the Lindblad equation. One interesting feature emerging out of this calculation is that the entanglement may exhibit revivals in time. An initially entangled state need not remain so for all time and may exhibit regions of nonentanglement. Interpreting the parameters of the Lindblad theory as environmental features in certain experimental situations, this model calculation gives us clues to possible control of decoherence, correlation, and entanglement. We indicate possible interpretation of the Lindblad parameters as control parameters in more general contexts of some recent 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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