Implementation of stimulated Raman adiabatic passage in degenerate systems by dimensionality reduction
Implementation of stimulated Raman adiabatic passage in degenerate systems by dimensionality reduction
复制标题
通过降维实现简并系统中的受激拉曼绝热通道
DOI：
10.1103/physreva.88.013404
复制
发表时间：
2013
影响因子：
2.9
通讯作者：
F. Renzoni
中科院分区：
文献类型：
--
作者：
G. Bevilacqua;G. Schaller;T. Brandes;F. Renzoni
我们考虑在简并系统中实施受激拉曼绝热通过（STIRAP）过程的问题，以期能够引导系统波函数从任意初始叠加到任意目标叠加。本文研究了由基态和激发态组成的一个能级原子系统在激光脉冲作用下的情况。我们分析的一般情况下，初始和最终的叠加属于同一个流形的国家，我们也涵盖的情况下，他们是非正交的。我们证明，对于一个给定的初始和目标叠加，它总是可以选择的激光脉冲，使在一个转换的基础上，该系统被减少到一个有效的三能级系统，和标准的STIRAP过程可以实施。我们的治疗导致一个简单的策略，以最小的计算复杂性，这使我们能够确定所需的绝热转向所需的激光脉冲形状。
We consider the problem of the implementation of stimulated Raman adiabatic passage (STIRAP) processes in degenerate systems, with a view to be able to steer the system wave function from an arbitrary initial superposition to an arbitrary target superposition. We examine the case of an-level atomic system consisting ofground states coupled to a common excited state by laser pulses. We analyze the general case of initial and final superpositions belonging to the same manifold of states, and we cover also the case in which they are nonorthogonal. We demonstrate that for a given initial and target superposition, it is always possible to choose the laser pulses so that in a transformed basis the system is reduced to an effective three-levelsystem, and standard STIRAP processes can be implemented. Our treatment leads to a simple strategy, with minimal computational complexity, which allows us to determine the laser-pulse shape required for the wanted adiabatic steering.