Self-Ordered stationary states of driven quantum degenerate gases in optical resonators
arXiv:1507.00271 · doi:10.1209/0295-5075/111/53001
Abstract
We study the role of quantum statistics in the self-ordering of ultracold bosons and fermions moving inside an optical resonator with transverse coherent pumping. For few particles we numerically compute the nonequilibrium dynamics of the density matrix towards the self-ordered stationary state of the coupled atom-cavity system. We include quantum fluctuations of the particles and the cavity field. These fluctuations in conjunction with cavity cooling determine the stationary distribution of the particles, which exhibits a transition from a homogeneous to a spatially ordered phase with the appearance of a superradiant scattering peak in the cavity output spectrum. At the same time the cavity field -function changes from a single to a double peaked distribution. While the ordering threshold is generally lower for bosons, we confirm the recently predicted zero pump strength threshold for superradiant scattering for fermions when the cavity photon momentum coincides with twice the Fermi momentum.
8 pages, 6 figures (v2: added one reference)
References in corpus (16)
- Cold atoms in cavity-generated dynamical optical potentials
- Dynamical phase transition in the open Dicke model
- Roton-type mode softening in a quantum gas with cavity-mediated long-range interactions
- Self-organization of a Bose-Einstein condensate in an optical cavity
- Self-organization of atoms in a cavity field: threshold, bistability and scaling laws
- Bose-glass phases of ultracold atoms due to cavity backaction
- Measuring the dynamic structure factor of a quantum gas undergoing a structural phase transition
- Nonequilibrium Phase Transition of Interacting Bosons in an Intra-Cavity Optical Lattice
- REVIEW. Quantum optics with ultracold quantum gases: towards the full quantum regime of the light-matter interaction
- Steering matter wave superradiance with an ultra-narrowband optical cavity
- Self-Organization Threshold Scaling for Thermal Atoms Coupled to a Cavity
- Prethermalization of atoms due to photon-mediated long-range interactions
- Quantum kinetics of ultracold fermions coupled to an optical resonator
- Microscopic physics of quantum self-organisation of optical lattices in cavities
- Quantum-correlated motion and heralded entanglement of distant optomechanically coupled objects
- Cavity assisted generation of sustainable macroscopic entanglement of ultracold gases
Cited by in corpus (14)
- Cavity QED with Quantum Gases: New Paradigms in Many-Body Physics
- A Superradiant Topological Peierls Insulator inside an Optical Cavity
- Spontaneous crystallization of light and ultracold atoms
- Numerically exact treatment of many body self-organization in a cavity
- Quantum annealing with ultracold atoms in a multimode optical resonator
- Quantum phases of spinful Fermi gases in optical cavities
- Dicke transition in open many-body systems determined by fluctuation effects
- Unraveling the quantum nature of atomic self-ordering in a ring cavity
- Conventional and unconventional Dicke models: Multistabilities and nonequilibrium dynamics
- Theoretical methods to treat a single dissipative bosonic mode coupled globally to an interacting many body system
- Antiferromagnetic self-ordering of a Fermi gas in a ring cavity
- Spin and density self-ordering in dynamic polarization gradients fields
- Moiré Superradiance in Cavity Quantum Electrodynamics with Quantum Atom Gas
- Controlling Collective Phenomena Via the Quantum State of Interaction-Mediators: Changing the Criticality of Photon-Mediated Superconductivity Via Fock States of Light