Numerical study of a recent black-hole lasing experiment

Anno: 2016

Autori: Tettamanti M., Cacciatori SL., Parola A., Carusotto I.

Affiliazione autori: Univ Insubria, Dipartimento Sci & Alta Tecnol, Via Valleggio 11, I-22100 Como, Italy; INFN, Sez Milano, Via Celoria 16, I-20133 Milan, Italy; Univ Trento, INO CNR BEC Ctr, I-38123 Povo, Italy; Univ Trento, Dipartimento Fis, I-38123 Povo, Italy.

Abstract: We theoretically analyse a recent experiment reporting the observation of a self-amplifying Hawking radiation in a flowing atomic condensate (STEINHAUER J., Nat. Phys., 10 (2014) 864). We are able to accurately reproduce the experimental observations using a theoretical model based on the numerical solution of a mean-field Gross-Pitaevskii equation that does not include quantum fluctuations of the matter field. In addition to confirming the black-hole lasing mechanism, our results show that the underlying dynamical instability has a classical hydrodynamic origin and is triggered by a seed of deterministic nature, linked to the non-stationary of the process, rather than by thermal or zero-point fluctuations. Copyright (C) EPLA, 2016

Giornale/Rivista: EUROPHYSICS LETTERS

Volume: 114 (6)      Da Pagina: 60011-1  A: 60011-6

Maggiori informazioni: We are grateful to R. Parentani and J. Steinhauer for continuous instructive discussions and a critical reading of the manuscript. MT gratefully thanks R. Parentani for the kind hospitality in Paris. IC’s activity was supported by the ERC through the QGBE grant, by the EU-FET Proactive grant AQuS, Project No. 640800, and by the Autonomous Province of Trento, partially through the project On silicon chip quantum optics for quantum computing and secure communications (SiQuro).
Parole chiavi: ANALOG; GASES
DOI: 10.1209/0295-5075/114/60011

Citazioni: 26
dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2025-06-29
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