Accelerated Non-Reciprocal Transfer of Energy Around an Exceptional Point

Autor:	Ribeiro, Hugo, Marquardt, Florian
Rok vydání:	2021
Předmět:	Quantum Physics Physics - Classical Physics Physics - Optics
Druh dokumentu:	Working Paper
Popis:	We develop perturbative methods to study and control dynamical phenomena related to exceptional points in Non-Hermitian systems. In particular, we show how to find perturbative solutions based on the Magnus expansion that accurately describe the evolution of non-Hermitian systems when encircling an exceptional point. This allows us to use the recently proposed Magnus-based strategy for control to design fast non-reciprocal, topological operations whose fidelity error is orders of magnitude smaller than their much slower adiabatic counterparts. Comment: 4.5 pages, 3 figures, 5 pages of supplemental material
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2111.11220 Zobrazit plný text záznamu View this record from Arxiv