Phase transition, phase separation and mode softening of a two-component Bose-Einstein condensate in an optical cavity
arXiv:2601.07772 · doi:10.1103/qwdq-35pv
Abstract
We investigate the superradiant phase transition in a two-component Bose-Einstein condensate with distinct atomic detunings, confined in an optical cavity and driven by a transverse pump laser. By combining perturbation theory and numerical simulations, we demonstrate that the phase transition is dominated by the red-detuned component, resulting in a phase diagram completely different from that of a single-component case under blue-detuned condition. The system exhibits spontaneous phase separation between the two components, manifested as alternating stripe patterns in the normal phase and distinct Bragg gratings in the superradiant phase. Furthermore, the Bogoliubov excitation spectrum reveals roton-type mode softening, indicating that the phase transition also corresponds to the superfluid-to-lattice supersolid transition. Our findings provide insights into the interplay between atomic detunings and collective quantum many-body phenomena, offering potential applications in quantum simulation and optical switching technologies.
8 pages,6 figures
References in corpus (43)
- Many-Body Physics with Ultracold Gases
- The Dicke Quantum Phase Transition with a Superfluid Gas in an Optical Cavity
- Cold atoms in cavity-generated dynamical optical potentials
- Supersolid formation in a quantum gas breaking continuous translational symmetry
- Quantum phases from competing short- and long-range interactions in an optical lattice
- Exploring Symmetry Breaking at the Dicke Quantum Phase Transition
- Cavity QED with Quantum Gases: New Paradigms in Many-Body Physics
- Roton-type mode softening in a quantum gas with cavity-mediated long-range interactions
- Long-range interacting quantum systems
- Tunable-range, photon-mediated atomic interactions in multimode cavity QED
- Monitoring and manipulating Higgs and Goldstone modes in a supersolid quantum gas
- Self-organization of a Bose-Einstein condensate in an optical cavity
- Dissipative Preparation of Spin Squeezed Atomic Ensembles in a Steady State
- Dissipation Induced Structural Instability and Chiral Dynamics in a Quantum Gas
- 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
- Emerging dissipative phases in a superradiant quantum gas with tunable decay
- Dissipation-induced instabilities of a spinor Bose-Einstein condensate inside an optical cavity
- Disorder-Driven Density and Spin Self-Ordering of a Bose-Einstein Condensate in a Cavity
- Driven-Dissipative Supersolid in a Ring Cavity
- 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
- Density-wave ordering in a unitary Fermi gas with photon-mediated interactions
- A quantum random walk of a Bose-Einstein condensate in momentum space
- Coupling two order parameters in a quantum gas
- Pathway to chaos through hierarchical superfluidity in a cavity-BEC system
- 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
- Superradiant Phase Transition of Fermi Gases in a Cavity across a Feshbach Resonance
- Intrinsic cross-Kerr nonlinearity in an optical cavity containing an interacting Bose-Einstein condensate
- Conventional and unconventional Dicke models: Multistabilities and nonequilibrium dynamics
- Self-organized Limit Cycles in Red-detuned Atom-cavity Systems
- Observation of counterflow superfluidity in a two-component Mott insulator
- Nonlinear Floquet dynamics of spinor condensates in an optical cavity: Cavity-amplified parametric resonance
- Finite temperature Dicke phase transition of a Bose-Einstein condensate in an optical cavity
- Non-equilibrium phases of Fermi gas inside a cavity with imbalanced pumping
- Many-Body Phases of a Planar Bose-Einstein Condensate with Cavity-Induced Spin-Orbit Coupling
- Fluctuation-Induced Bistability of Fermionic Atoms Coupled to a Dissipative Cavity
- Theoretical Exploration of Phase Transitions in a Cavity-BEC System with Two Crossed Optical Pumps
- Bistable behavior of a two-mode Bose-Einstein condensate in an optical cavity
- Phase separation and multistability of two-component Bose-Einstein condensate in an optical cavity
- Dynamics of spin-momentum entanglement from superradiant phase transitions