Black-hole lasing in coherently coupled two-component atomic condensates

Butera, S. , Öhberg, P. and Carusotto, I. (2017) Black-hole lasing in coherently coupled two-component atomic condensates. Physical Review A: Atomic, Molecular and Optical Physics, 96(1), 013611. (doi: 10.1103/PhysRevA.96.013611)

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Abstract

We study theoretically the black-hole lasing phenomenon in a flowing one-dimensional, coherently coupled two-component atomic Bose–Einstein condensate whose constituent atoms interact via a spin-dependent s -wave contact interaction. We show by a numerical analysis the onset of the dynamical instability in the spin branch of the excitations, once a finite supersonic region is created in this branch. We study both a spatially homogeneous geometry and a harmonically trapped condensate. Experimental advantages of the two-component configuration are pointed out, with an eye towards studies of backreaction phenomena.

Item Type:Articles
Additional Information:s. S.B. acknowledges financial support from EPSRC CM-CDT Grant No. EP/G03673X/1. P.Ö. acknowledges support from EPSRC EP/M024636/1. I.C. acknowledges financial support from 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”).
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Butera, Dr Salvatore
Authors: Butera, S., Öhberg, P., and Carusotto, I.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Physical Review A: Atomic, Molecular and Optical Physics
Publisher:American Physical Society
ISSN:1050-2947
ISSN (Online):1094-1622
Published Online:10 July 2017
Copyright Holders:Copyright © 2017 American Physical Society
First Published:First published in Physical Review A: Atomic, Molecular and Optical Physics 96(1): 013611
Publisher Policy:Reproduced in accordance with the publisher copyright policy

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