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arXiv 1003.3616quant-ph
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开放量子系统中的受激拉曼绝热过程:主方程方法

Stimulated Raman adiabatic passage in an open quantum system: Master equation approach

M. Scala, B. Militello, A. Messina, N. V. Vitanov

摘要:

提出了一种研究三态系统绝热布居转移中环境效应的主方程方法。与非厄米哈密顿方法的系统比较[N. Vitanov和S. Stenholm,Phys.Rev.A { \bf 56},1463(1997)]表明,在弱耦合极限中,两种处理导致基本相同的结果。相反,在强阻尼限制的预测是完全不同的:特别是在STIRAP计划中的反直觉的序列原来是比预期的更有效。这一点可以用量子芝诺动力学来解释。

英文摘要:

A master equation approach to the study of environmental effects in the adiabatic population transfer in three-state systems is presented. A systematic comparison with the non-Hermitian Hamiltonian approach [N. V. Vitanov and S. Stenholm, Phys. Rev. A {\bf 56}, 1463 (1997)] shows that in the weak coupling limit the two treatments lead to essentially the same results. Instead, in the strong damping limit the predictions are quite different: in particular the counterintuitive sequences in the STIRAP scheme turn out to be much more efficient than expected before. This point is explained in terms of quantum Zeno dynamics.

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