期刊
PHYSICAL REVIEW A
卷 92, 期 6, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.92.063807
关键词
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资金
- NSF CAREER Award [ECCS-1454531]
- NSF [ECCS-1128520, DMR-1420620]
- AFOSR [FA9550-12-1-0148, FA9550-14-1-0037]
- ARO [W911NF-14-1-0543, W911NF-16-1-0013]
- Directorate For Engineering
- Div Of Electrical, Commun & Cyber Sys [1128520] Funding Source: National Science Foundation
- Directorate For Engineering
- Div Of Electrical, Commun & Cyber Sys [1454531] Funding Source: National Science Foundation
A system of two coupled semiconductor-based resonators is studied when lasing around an exceptional point. We show that the presence of nonlinear saturation effects can have important ramifications on the transition behavior of this system. In sharp contrast with linear PT -symmetric configurations, nonlinear processes are capable of reversing the order in which the symmetry breaking occurs. Yet, even in the nonlinear regime, the resulting non-Hermitian states still retain the structural form of the corresponding linear eigenvectors expected above and below the phase-transition point. The conclusions of our analysis are in agreement with experimental data.
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