Dynamics for encircling an exceptional point in a nonlinear non-Hermitian system
| Autor: | Haiwen Wang, Sid Assawaworrarit, Shanhui Fan |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Bistability
02 engineering and technology 01 natural sciences law.invention 010309 optics Resonator Optics law Quantum mechanics 0103 physical sciences Adiabatic process Physics Steady state business.industry Dynamics (mechanics) State (functional analysis) Laser 021001 nanoscience & nanotechnology Hermitian matrix Atomic and Molecular Physics and Optics System dynamics Nonlinear system Classical mechanics business 0210 nano-technology Saturation (chemistry) Refractive index Lasing threshold |
| Zdroj: | Optics letters. 44(3) |
| ISSN: | 1539-4794 |
| Popis: | We study the dynamics near an exceptional point in a nonlinear non-Hermitian system consisting of a pair of resonators. One of the resonators has a linear loss, and the other resonator has a saturable gain. We show that the system dynamics exhibit chiral characteristics. And moreover, unique to the nonlinear system, such dynamics allow one to adiabatically switch between bistable states at the same system parameter. Such bistable switching is potentially interesting in optical memory based on coupled laser systems. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|