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

Anno: 2017

Autori: Butera S., Ohberg P., Carusotto I.

Affiliazione autori: Heriot Watt Univ, Inst Photon & Quantum Sci, SUPA, Edinburgh EH14 4AS, Midlothian, Scotland; Univ Trento, CNR BEC Ctr, INO, I-38123 Povo, Italy; Univ Trento, Dipartimento Fis, I-38123 Povo, Italy.

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

Giornale/Rivista: PHYSICAL REVIEW A

Volume: 96 (1)      Da Pagina: 13611-1  A: 13611-17

Maggiori informazioni: We are grateful to M. Oberthaler, J. Schmiedmayer, and A. Recati for continuous stimulating discussions. S. B. acknowledges financial support from EPSRC CM-CDT Grant No. EP/G03673X/1. P.O. 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).
Parole chiavi: HAWKING RADIATION; SONIC ANALOG; EVAPORATION; FREQUENCIES; GRAVITY; GASES
DOI: 10.1103/PhysRevA.96.013611

Citazioni: 9
dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2025-05-04
Riferimenti tratti da Isi Web of Knowledge: (solo abbonati)
Link per visualizzare la scheda su IsiWeb: Clicca qui
Link per visualizzare la citazioni su IsiWeb: Clicca qui