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Thomas Pohl

Long-Range Interactions and Symmetry Breaking in Quantum Gases through Optical Feedback

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We consider a quasi-two-dimensional atomic Bose-Einstein condensate interacting with a near-resonant laser field that is backreflected onto the condensate by a planar mirror. We show that this single-mirror optical feedback leads to an unusual type of effective interaction between the ultracold atoms giving rise to a rich spectrum of ground states. In particular, we find that it can cause the spontaneous contraction of the quasi-two-dimensional condensate to form a self-bound one-dimensional chain of mesoscopic quantum droplets, and demonstrate that the observation of this exotic effect is within reach of current experiments.

Original languageEnglish
Article number073604
JournalPhysical Review Letters
Volume121
Issue7
Number of pages6
ISSN0031-9007
DOIs
Publication statusPublished - 17 Aug 2018

    Research areas

  • ULTRACOLD GASES, ATOMS, SIMULATIONS, DYNAMICS, LATTICE, MIRROR, CAVITY

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