Theoretical Exploration of Phase Transitions in a Cavity-BEC System with Two Crossed Optical Pumps
arXiv:2503.00468 · doi:10.1103/PhysRevA.109.013310
Abstract
We consider a Bose-Einstein condensation (BEC) inside an optical cavity and two crossed coherent pump fields. We determine the phase boundary separating the normal superfluid phase and the superradiance phase, perturbatively. In the regime of negative cavity detuning, we map out the phase diagrams both for an attractive and a repulsive optical lattice. It turns out that the situation is quite different in two cases. Specifically, in the case of attractive lattice, if a system is in the superradiant phase with one pump laser, adding another pump does not drive the system out of the superradiance phase. While for the repulsive lattice, increasing another pump potential have suppressive effects on the superradiance. We also find that, in the case of attractive lattice, equally increasing two pump lattice potentials can induce a transition from the normal phase to the superradiance phase. In stark contrast, for the repulsive lattice, the system will remain in the normal phase as the pump depths are tuned within a wide range, independent of the cavity detuning and the decay rate.
arXiv comment7 pages; 6 figures
References in corpus (36)
- The Dicke Quantum Phase Transition with a Superfluid Gas in an Optical Cavity
- Theory of Intertwined Orders in High Temperature Superconductors
- Cold atoms in cavity-generated dynamical optical potentials
- Supersolid formation in a quantum gas breaking continuous translational symmetry
- Exploring Symmetry Breaking at the Dicke Quantum Phase Transition
- The Dicke model phase transition in the quantum motion of a Bose-Einstein condensate in an optical cavity
- Dynamical phase transition in the open Dicke model
- Cavity QED with Quantum Gases: New Paradigms in Many-Body Physics
- Long-range interacting quantum systems
- Tunable-range, photon-mediated atomic interactions in multimode cavity QED
- Dynamics of Nonequilibrium Dicke Models
- Observation of a continuous time crystal
- Monitoring and manipulating Higgs and Goldstone modes in a supersolid quantum gas
- Self-organization of a Bose-Einstein condensate in an optical cavity
- Collective Dynamics of Bose--Einstein Condensates in Optical Cavities
- Ultracold atoms in optical lattices generated by quantized light fields
- Spinor self-ordering of a quantum gas in a cavity
- Formation of a spin texture in a quantum gas coupled to a cavity
- Superradiance of Degenerate Fermi Gases in a Cavity
- Dicke model simulation via cavity-assisted Raman transitions
- A Superradiant Topological Peierls Insulator inside an Optical Cavity
- Bose-Einstein Condensation versus Dicke-Hepp-Lieb Transition in an Optical Cavity
- Self-Organization Threshold Scaling for Thermal Atoms Coupled to a Cavity
- Self-oscillating pump in a topological dissipative atom-cavity system
- P-band induced self-organization and dynamics with repulsively driven ultracold atoms in an optical cavity
- Engineering random spin models with atoms in a high-finesse cavity
- Light-shift-induced quantum phase transitions of a Bose-Einstein condensate in the optical cavities
- Coupling two order parameters in a quantum gas
- Measuring the dynamics of a first order structural phase transition between two configurations of a superradiant crystal
- Two-mode Dicke model from non-degenerate polarization modes
- Collective excitations and supersolid behavior of bosonic atoms inside two crossed optical cavities
- Condensate formation in a dark state of a driven atom-cavity system
- Emergent Symmetry at Superradiance Transition of a Bose Condensate in Two Crossed Beam Cavities
- Many-Body Phases of a Planar Bose-Einstein Condensate with Cavity-Induced Spin-Orbit Coupling
- Self-ordered supersolid phase beyond Dicke superradiance in a ring cavity
- Superglass formation in an atomic BEC with competing long-range interactions