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arXiv 1012.5429quant-ph
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量子系统的绝热通过与系综控制

Adiabatic passage and ensemble control of quantum systems

Zaki Leghtas, Alain Sarlette, Pierre Rouchon

摘要:

本文研究了受经典电场控制的有限量子梯本征态间的布居转移。使用适当的变量的变化,我们表明,这种设置可以设置在绝热通道,这是已知的,以促进量子系统的系综控制的框架。基于这一认识,我们提出了一个数学证明的鲁棒性的控制协议-啁啾脉冲-实践的实验驱动量子系统的合奏从基态到最激发态。然后,我们提出了新的绝热控制协议,使用一个单一的啁啾和振幅整形脉冲,鲁棒地执行本征态种群的任何排列,在一个系综的系统与糟糕的已知耦合强度。这样的绝热控制协议示出的模拟实现所有24个排列的4级阶梯。

英文摘要:

This paper considers population transfer between eigenstates of a finite quantum ladder controlled by a classical electric field. Using an appropriate change of variables, we show that this setting can be set in the framework of adiabatic passage, which is known to facilitate ensemble control of quantum systems. Building on this insight, we present a mathematical proof of robustness for a control protocol -- chirped pulse -- practiced by experimentalists to drive an ensemble of quantum systems from the ground state to the most excited state. We then propose new adiabatic control protocols using a single chirped and amplitude shaped pulse, to robustly perform any permutation of eigenstate populations, on an ensemble of systems with badly known coupling strengths. Such adiabatic control protocols are illustrated by simulations achieving all 24 permutations for a 4-level ladder.

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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