Superradiance induced topological vortex phase in a Bose-Einstein condensate

Details Superradiance induced topological vortex phase in a Bose-Einstein condensate Superradiance induced topological vortex phase in a Bose-Einstein condensate

2011-03-12

arxiv.org/abs/1103.2478v1

Physical Review A 84, 063628 (2011)

Physics

Condensed Matter

Quantum Gases

4 pages, 3 figures, submitted to Phys. Rev. Lett

Scientific paper

10.1103/PhysRevA.84.063628

We investigate theoretically a topological vortex phase transition induced by a superradiant phase transition in an atomic Bose-Einstein condensate driven by a Laguerre-Gaussian optical mode. We show that superradiant radiation can either carry zero angular momentum, or be in a rotating Laguerre-Gaussian mode with angular momentum. The conditions leading to these two regimes are determined in terms of the width for the pump laser and the condensate size for the limiting cases where the recoil energy is both much smaller and larger than the atomic interaction energy.

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