Time-dependent study of a black-hole laser in a flowing atomic condensate

Year: 2016

Authors: de Nova JRM., Finazzi S., Carusotto I.

Autors Affiliation: Univ Complutense Madrid, Dept Fis Mat, E-28040 Madrid, Spain; Technion Israel Inst Technol, Dept Phys, IL-32000 Haifa, Israel; Univ Trento, INO CNR BEC Ctr, I-38123 Povo, Italy; Univ Trento, Dipartimento Fis, I-38123 Povo, Italy; Univ Paris 07, Lab Mat & Phenomenes Quant, Batiment Condorcet, F-75205 Paris 13, France; CNRS, Batiment Condorcet, F-75205 Paris 13, France; IRCCS Ist Ric Farmacol Mario Negri, Lab Clin Epidemiol, GiViTI Coordinating Ctr, I-24020 Bergamo, Italy.

Abstract: We numerically study the temporal evolution of a black-hole laser configuration displaying a pair of black- and white-hole horizons in a flowing atomic condensate. This configuration is initially prepared starting from a homogeneous flow via a suitable space-dependent change of the interaction constant and the evolution is then followed up to long times. Depending on the values of the system parameters, the system typically either converges to the lowest-energy solution by evaporating away the horizons or displays a continuous and periodic coherent emission of solitons. By making a physical comparison with optical laser devices, we identify the latter regime of continuous emission of solitons as the proper black-hole laser effect.

Journal/Review: PHYSICAL REVIEW A

Volume: 94 (4)      Pages from: 43616-1  to: 43616-15

More Information: We thank F. Michel, R. Parentani, J. Steinhauer, F. Sols and R. Balbinot for fruitful and stimulating discussions. We also thank F. Sols and I. Zapata for valuable comments on the manuscript. This work has been supported by MINECO (Spain) through Grants No. FIS2010-21372 and No. FIS2013-41716-P, Comunidad de Madrid through grant MICROSERES-CM (Grant No. S2009/TIC-1476) and also partially by the Israel Science Foundation. I.C. acknowledges financial support 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).
KeyWords: Analog
DOI: 10.1103/PhysRevA.94.043616

Citations: 21
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