Synchronization of Quasi-Particle Excitations in a Quantum Gas with Cavity-Mediated Interactions
arXiv:2504.17731 · doi:10.1103/q36k-v3yh
Abstract
Driven-dissipative quantum systems can undergo transitions from stationary to dynamical phases, reflecting the emergence of collective non-equilibrium behavior. We study such a transition in a Bose-Einstein condensate coupled to an optical cavity and develop a cavity-assisted Bragg spectroscopy technique to resolve its collective modes. We observe dissipation-induced synchronization at the quasiparticle level, where two roton-like modes coalesce at an exceptional point. This reveals how dissipation microscopically drives collective dynamics and signals a precursor to a dynamical phase transition.
arXiv comment11 pages, 5 figures
References in corpus (25)
- The Dicke Quantum Phase Transition with a Superfluid Gas in an Optical Cavity
- Observation of a Discrete Time Crystal
- Non-reciprocal phase transitions
- The sound of many hands clapping
- Supersolid formation in a quantum gas breaking continuous translational symmetry
- Cavity QED with Quantum Gases: New Paradigms in Many-Body Physics
- Dynamical Critical Phenomena in Driven-Dissipative Systems
- Roton-type mode softening in a quantum gas with cavity-mediated long-range interactions
- Observation of a continuous time crystal
- Kuramoto model of synchronization: Equilibrium and nonequilibrium aspects
- Dissipation Induced Structural Instability and Chiral Dynamics in a Quantum Gas
- Synchronization, quantum correlations and entanglement in oscillator networks
- Critical fluctuations at a many-body exceptional point
- Self-oscillating pump in a topological dissipative atom-cavity system
- Quantum synchronization in dimer atomic lattices
- P-band induced self-organization and dynamics with repulsively driven ultracold atoms in an optical cavity
- Nonreciprocal Synchronization of Active Quantum Spins
- Mode softening in time-crystalline transitions of open quantum systems
- 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
- Crafting the dynamical structure of synchronization by harnessing bosonic multilevel cavity QED
- Measurement-Induced Quantum Synchronization and Multiplexing
- Synchronization in rotating supersolids
- A Python GPU-accelerated solver for the Gross-Pitaevskii equation and applications to many-body cavity QED
- Stability and decay of subradiant patterns in a quantum gas with photon-mediated interactions