Theory of chiral edge state lasing in a two-dimensional topological system

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.

Theory of chiral edge state lasing in a two-dimensional topological system / Secli, M; Capone, M; Carusotto, I. - In: PHYSICAL REVIEW RESEARCH. - ISSN 2643-1564. - 1:3(2019). [10.1103/PhysRevResearch.1.033148]

Titolo: Theory of chiral edge state lasing in a two-dimensional topological system
Autori: Secli, M; Capone, M; Carusotto, I
Autori Unitn: 
Carusotto, Iacopo
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Titolo del periodico: PHYSICAL REVIEW RESEARCH
Anno di pubblicazione: 2019
Numero e parte del fascicolo: 3
Codice identificativo WOS: WOS:000600650700004
Digital Object Identifier (DOI): http://dx.doi.org/10.1103/PhysRevResearch.1.033148
Handle: http://hdl.handle.net/11572/343969
Citazione: Theory of chiral edge state lasing in a two-dimensional topological system / Secli, M; Capone, M; Carusotto, I. - In: PHYSICAL REVIEW RESEARCH. - ISSN 2643-1564. - 1:3(2019). [10.1103/PhysRevResearch.1.033148]
Appare nelle tipologie:03.1 Articolo su rivista (Journal article)

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