Self-ordered supersolid phase beyond Dicke superradiance in a ring cavity
arXiv:2201.07664 · doi:10.1103/PhysRevResearch.5.013002
Abstract
The supersolid phase characterized by the superfluid and long-range spatial periodicity of crystalline order is central to many branches of science ranging from condensed matter physics to ultracold atomic physics. Here we study a self-ordered checkerboard supersolid phase originating from dynamical spin-orbit coupling for a transversely pumped atomic Bose-Einstein condensate trapped in a ring cavity, corresponding to a superradiant anti-Tavis-Cummings phase transition. In particular, an undamped gapless Goldstone mode is observed in contrast to the experimentally realized lattice supersolid with a gapped roton mode for Dicke superradiance. This zero energy mode reveals the rigidity of the self-ordered superradiant phase, which spontaneously breaks a continuous translational symmetry. Our work will highlight the significant opportunities for exploring long-lived supersolid matter by utilizing dynamical spin-orbit coupling in controllable optical cavities.
15 pages, 4+4 figures
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Cited by in corpus (5)
- Interactions mediated by atoms, photons, electrons, and excitons
- Theoretical Exploration of Phase Transitions in a Cavity-BEC System with Two Crossed Optical Pumps
- Atom-Molecule Superradiance and Entanglement with Cavity-Mediated Three-Body Interactions
- Self-Ordered Supersolid in Spinor Condensates with Cavity-Mediated Spin-Momentum-Mixing Interactions
- Control, competition and coexistence of effective magnetic orders by interactions in Bose-Einstein condensates with high-Q cavities