# Self-Ordered stationary states of driven quantum degenerate gases in optical resonators

@article{Sandner2015SelfOrderedSS, title={Self-Ordered stationary states of driven quantum degenerate gases in optical resonators}, author={Raimar M. Sandner and Wolfgang Niedenzu and Francesco Piazza and Helmut Ritsch}, journal={arXiv: Quantum Physics}, year={2015} }

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…

## 11 Citations

Unraveling the Quantum Nature of Atomic Self-Ordering in a Ring Cavity.

- PhysicsPhysical review letters
- 2020

A modified ring cavity geometry is proposed, in which the asymmetry imposed by a tilted pump beam reveals clear signatures of quantum dynamics even in a larger regime around the phase transition point, and can identify a regime where a mean-field approximation predicts a runaway instability.

Antiferromagnetic self-ordering of a Fermi gas in a ring cavity

- PhysicsNew Journal of Physics
- 2019

We explore the density and spin self-ordering of driven spin-$1/2$ collisionless fermionic atoms coupled to the electromagnetic fields of a ring resonator. The two spin states are two-photon…

Spontaneous Crystallization of Light and Ultracold Atoms

- Physics
- 2016

Coherent scattering of light from ultracold atoms involves an exchange of energy and momentum introducing a wealth of non-linear dynamical phenomena. As a prominent example particles can…

Probing and characterizing the growth of a crystal of ultracold bosons and light

- Physics
- 2017

The non-linear coupled particle light dynamics of an ultracold gas in the field of two independent counter-propagating laser beams can lead to the dynamical formation of a self-ordered lattice…

Quantum phases of spinful Fermi gases in optical cavities

- Physics
- 2018

We propose the realization of a quantum fluid of spinful fermionic atoms interacting via a cavity-photon mediating mechanism, whose effective coupling g can be tuned in strength and sign after…

Dicke Transition in Open Many-Body Systems Determined by Fluctuation Effects.

- PhysicsPhysical review letters
- 2021

An approach to describe the Dicke transition of interacting many-particle systems strongly coupled to the light of a lossy cavity is developed with a perturbative treatment of fluctuations beyond mean field, which becomes exact in the thermodynamic limit.

Condensation de Bose-Einstein multiple dans les modes d’ordre supérieurs d’une cavité optique bi-fréquence

- Physics
- 2017

Les gaz quantiques degeneres des atomes neutres sont d’excellentssystemes avec les applications importantes dans les etudes de la physique a plusieurs corps, de la matiere condensee, de la mesure de…

Cavity QED with quantum gases: new paradigms in many-body physics

- PhysicsAdvances in Physics
- 2021

We review the recent developments and the current status in the field of quantum-gas cavity QED. Since the first experimental demonstration of atomic self-ordering in a system composed of a…

Numerically Exact Treatment of Many-Body Self-Organization in a Cavity.

- PhysicsPhysical review letters
- 2020

The full quantum evolution of ultracold interacting bosonic atoms on a chain and coupled to an optical cavity is investigated and it is shown that in the self-organized phase the steady state consists in a mixture of the mean-field predicted density wave states and excited states with additional defects.

Spin and density self-ordering in dynamic polarization gradients fields

- Physics
- 2020

We study the zero-temperature quantum phase diagram for a two-component Bose-Einstein condensate in an optical cavity. The two atomic spin states are Raman coupled by two transverse…

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