论文标题
作为快速绝热通道的非炎热延伸的特殊点
Encircling exceptional points as a non-Hermitian extension of rapid adiabatic passage
论文作者
论文摘要
量子系统不同级别之间激发的有效转移是许多应用程序的任务。在驱动系统中进行这样的状态转移的各种协议中，快速绝热通道（RAP）是使用最广泛的一种。在这里，我们在理论上和实验上都表明，在驱动的哈密顿式的添加适当的损失将RAP协议变成了一个方案，用于包围包括与之相关的手性状态转移的特殊点。因此，我们的工作揭示了有关说唱的全部文献与最新的有关特殊点附近动态的研究之间的紧密联系，我们希望这是在这两种情况下工作的脱节社区之间的桥梁。
The efficient transfer of excitations between different levels of a quantum system is a task with many applications. Among the various protocols to carry out such a state transfer in driven systems, rapid adiabatic passage (RAP) is one of the most widely used. Here we show both theoretically and experimentally that adding a suitable amount of loss to the driven Hamiltonian turns a RAP protocol into a scheme for encircling an exceptional point including the chiral state transfer associated with it. Our work thus discloses an intimate connection between a whole body of literature on RAP and recent studies on the dynamics in the vicinity of an exceptional point, which we expect to serve as a bridge between the disjoint communities working on these two scenarios.
