期刊
PHYSICAL REVIEW RESEARCH
卷 1, 期 3, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevResearch.1.033148
关键词
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资金
- Provincia Autonoma di Trento
- European Union via the FET-Open Grant MIR-BOSE [737017]
- European Union via Quantum Flagship Grant PhoQuS [820392]
- MIUR PRIN 2015 [2015C5SEJJ001]
- SISSA/CNR project Superconductivity, Ferroelectricity and Magnetism in bad metals [232/2015]
We theoretically study topological laser operation in a bosonic Harper-Hofstadter model featuring a saturable optical gain. Crucial consequences of the chirality of the lasing edge modes are highlighted, such as a sharp dependence of the lasing threshold on the geometrical shape of the amplifying region and the possibility of ultraslow relaxation times and of convectively unstable regimes. The different unstable regimes are characterized in terms of spatiotemporal structures sustained by noise and a strong amplification of a propagating probe beam is anticipated to occur in between the convective and the absolute (lasing) thresholds. The robustness of topological laser operation against static disorder is assessed.
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