Chitsazi Mahboobeh, Li Huanan, Ellis F M, Kottos Tsampikos
Department of Physics, Wesleyan University, Middletown, Connecticut 06459, USA.
Phys Rev Lett. 2017 Sep 1;119(9):093901. doi: 10.1103/PhysRevLett.119.093901.
We provide an experimental framework where periodically driven PT-symmetric systems can be investigated. The setup, consisting of two ultra high frequency oscillators coupled by a time-dependent capacitance, demonstrates a cascade of PT-symmetric broken domains bounded by exceptional point degeneracies. These domains are analyzed and understood using an equivalent Floquet frequency lattice with local PT symmetry. Management of these PT-phase transition domains is achieved through the amplitude and frequency of the drive.
我们提供了一个实验框架，可用于研究周期性驱动的PT对称系统。该装置由两个通过随时间变化的电容耦合的超高频振荡器组成，展示了由例外点简并界定的一系列PT对称破缺域。利用具有局部PT对称性的等效弗洛凯频率晶格对这些域进行了分析和理解。通过驱动的幅度和频率实现对这些PT相变域的控制。
