# Cavity-mediated near-critical dissipative dynamics of a driven condensate.

@article{Kulkarni2013CavitymediatedND, title={Cavity-mediated near-critical dissipative dynamics of a driven condensate.}, author={Manas Kulkarni and Barış {\"O}ztop and Hakan E. T{\"u}reci}, journal={Physical review letters}, year={2013}, volume={111 22}, pages={ 220408 } }

We investigate the near-critical dynamics of atomic density fluctuations in the nonequilibrium self-organization transition of an optically driven quantum gas coupled to a single mode of a cavity. In this system cavity-mediated long-range interactions between atoms, tunable by the drive strength, lead to softening of an excitation mode recently observed in experiments. This phenomenon has previously been studied within a two-mode approximation for the collective motional degrees of freedom of…

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## References

SHOWING 1-10 OF 105 REFERENCES

### Keldysh approach for nonequilibrium phase transitions in quantum optics: Beyond the Dicke model in optical cavities

- Physics
- 2013

We investigate non-equilibrium phase transitions for driven atomic ensembles, interacting with a cavity mode, coupled to a Markovian dissipative bath. In the thermodynamic limit and at…

### Real-time observation of fluctuations at the driven-dissipative Dicke phase transition

- PhysicsProceedings of the National Academy of Sciences
- 2013

Using a dissipation channel to nondestructively gain information about a quantum many-body system provides a unique path to study the physics of driven-dissipative systems.

### Excitations of optically driven atomic condensate in a cavity: theory of photodetection measurements

- Physics
- 2012

Recent experiments have demonstrated an open system realization of the Dicke quantum phase transition in the motional degrees of freedom of an optically driven Bose–Einstein condensate in a cavity.…

### Critical exponent of a quantum-noise-driven phase transition: The open-system Dicke model

- Physics
- 2011

The quantum phase transition of the Dicke model has been observed recently in a system formed by motional excitations of a laser-driven Bose-Einstein condensate coupled to an optical cavity [Baumann…

### Cold atoms in cavity-generated dynamical optical potentials

- Physics
- 2013

We review state-of-the-art theory and experiment of the motion of cold and ultracold atoms coupled to the radiation field within a high-finesse optical resonator in the dispersive regime of the…

### Dicke quantum phase transition with a superfluid gas in an optical cavity

- PhysicsNature
- 2010

The Dicke quantum phase transition is realized in an open system formed by a Bose–Einstein condensate coupled to an optical cavity, and the emergence of a self-organized supersolid phase is observed.

### Atom-light crystallization of Bose-Einstein condensates in multimode cavities: Nonequilibrium classical and quantum phase transitions, emergent lattices, supersolidity, and frustration

- Physics
- 2010

The self-organization of a Bose-Einstein condensate (BEC) in a transversely pumped optical cavity is a process akin to crystallization: when pumped by a laser of sufficient intensity, the coupled…

### Dicke-model quantum spin and photon glass in optical cavities: Nonequilibrium theory and experimental signatures

- Physics
- 2013

In the context of ultracold atoms in multimode optical cavities, the appearance of a quantum-critical glass phase of atomic spins has been predicted recently. Due to the long-range nature of the…

### Roton-Type Mode Softening in a Quantum Gas with Cavity-Mediated Long-Range Interactions

- PhysicsScience
- 2012

The excitation spectrum of a Bose-Einstein condensate with cavity-mediated long-range interactions, which couple all particles to each other is investigated, finding a minimum was observed in the excitation energy, similar to that observed in roton excitations of the superfluid helium.

### Signatures of the superfluid-insulator phase transition in laser-driven dissipative nonlinear cavity arrays

- Physics
- 2010

We analyze the nonequilibrium dynamics of a gas of interacting photons in an array of coupled dissipative nonlinear cavities when driven by a pulsed external coherent field. Using a mean-field…