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arXiv 1406.3755quant-ph
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周期驱动二能级系统中的最大布居转移

Maximum population transfer in a periodically driven two-level system

P. M. Poggi, F. J. Arranz, R. M. Benito, F. Borondo, D. A. Wisniacki

摘要:

研究了中频正弦驱动下二能级量子系统的动力学行为。分析Floquet准能谱,我们发现人口转移是最佳的场参数的组合,并通过一系列定义明确的固定持续时间的步骤发生。我们还展示了如何相应的演化算子可以近似在任何时候由一个非常简单的解析表达式。我们提出这个模型是特别适合于治疗周期性驾驶在避免交叉发现在复杂的多层次系统,从而显示了相关的应用,我们的结果,设计一个控制协议,在一个现实的分子模型

英文摘要:

We study the dynamics of a two-level quantum system under the influence of sinusoidal driving in the intermediate frequency regime. Analyzing the Floquet quasienergy spectrum, we find combinations of the field parameters for which population transfer is optimal and takes place through a series of well defined steps of fixed duration. We also show how the corresponding evolution operator can be approximated at all times by a very simple analytical expression. We propose this model as being specially suitable for treating periodic driving at avoided crossings found in complex multi-level systems, and thus show a relevant application of our results to designing a control protocol in a realistic molecular model

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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