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 -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.
6 More- Received 25 February 2017
DOI:https://doi.org/10.1103/PhysRevA.96.013611
©2017 American Physical Society