Stimulated Raman adiabatic passage in an open quantum system: Master equation approach
Stimulated Raman adiabatic passage in an open quantum system: Master equation approach
复制标题
DOI：
10.1103/physreva.81.053847
复制
发表时间：
2010-03
影响因子：
2.9
通讯作者：
M. Scala;B. Militello;A. Messina;null Vitanov;null Vitanov
中科院分区：
文献类型：
--
作者：
M. Scala;B. Militello;A. Messina;null Vitanov;null Vitanov
提出了一种研究三态系统绝热布居迁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[Vitanov和Stenholm，Phys.A 56,1463(1997)修订版]表明，在弱耦合极限下，两种处理方法产生的结果基本上相同。相比之下，在强阻尼极限下，预测结果截然不同：尤其是，STIRAP方案中的反直觉序列被证明比之前预期的要有效得多。这一点可以用量子零点动力学来解释。
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 [Vitanov and Stenholm, Phys. Rev. A 56, 1463 (1997)] shows that, in the weak-coupling limit, the two treatments lead to essentially the same results. In contrast, 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.