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arXiv · 1702.07533

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

Salvatore Butera·Patrik Öhberg·Iacopo Carusotto
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Abstract

We theoretically study 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 back-reaction phenomena.

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Salvatore Butera, Patrik Öhberg, Iacopo Carusotto. 2017-07-16. Black-hole lasing in coherently coupled two-component atomic condensates. https://doi.org/10.1103/physreva.96.013611

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