论文标题
将莫里斯岸转换扩展到任意时间依赖的驾驶场
Extension of the Morris-Shore transformation to arbitrary time-dependent driving fields
论文作者
论文摘要
涉及多个状态的量子系统的时间相关动力的处理带来了巨大的技术挑战。治疗此类系统的最有效方法之一是Morris-Shore（MS）转换，该转换将多层动力学分解为一组更简单的相互作用模式和未耦合的观众状态的独立系统。标准MS转换对解决状态的外部场的时间依赖性施加了限制，因为它要求两个RABI频率具有相同的时间概况。在这项工作中，我们处理了时间依赖性的MS变换的情况，该情况为各种物理有趣的过程打开了前景，其中这些田地可能具有不同的时间依赖性。我们探讨了绝热和双绝热限制，其中我们证明了MS州之间的人口转移，从而导致人口从一组状态转移到另一种状态。我们通过半绝热通道和分数刺激的拉曼绝热通道的技术来证明MS状态之间的叠加状态的产生，这转化为涉及水平的所有状态的叠加。
The treatment of time-dependent dynamics of quantum systems involving multiple states poses considerable technical challenges. One of the most efficient approaches in treating such systems is the Morris-Shore (MS) transformation which decomposes the multistate dynamics to a set of independent systems of simpler interaction pattern and uncoupled spectator states. The standard MS transformation imposes restrictions on the time dependence of the external fields addressing the states, as it requires that both Rabi frequencies have the same time profile. In this work we treat the case of the time-dependent MS transformation, which opens prospects for a variety of physically interesting processes wherein the fields may have different time dependences. We explore the adiabatic and the double-adiabatic limit, in which we demonstrate population transfer between the MS states that results in population transfer from one set of states onto another. We demonstrate the generation of superposition states between the MS states by the techniques of half adiabatic passage and fractional stimulated Raman adiabatic passage, which translate to superpositions of all the states of the involved levels.
