Photonic tuning of quasi-particle decay in a superfluid
arXiv:1312.6719 · doi:10.1103/PhysRevA.89.051601
Abstract
We show that the damping rate of elementary excitations of hybrid systems close to a phase transition can undergo a remarkable resonance like enhancement before mode softening takes place. In particular, we consider the friction of a collective density wave in a homogeneous superfluid of weakly interacting bosonic atoms coupled to the electromagnetic field of a single mode optical resonator. Here the Beliaev damping can thus be controlled by an external laser drive and be enhanced by several orders of magnitude.
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- Measuring the dynamic structure factor of a quantum gas undergoing a structural phase transition
- The Open-System Dicke-Model Quantum Phase Transition with a Sub-Ohmic Bath
- Superradiance induced particle flow via dynamical gauge coupling
- Quantum kinetics of ultracold fermions coupled to an optical resonator
- Critical exponent of quantum phase transitions driven by colored noise
- Damping of quasiparticles in a Bose-Einstein condensate coupled to an optical cavity
- Anomalous Diffusion in a Dynamical Optical Lattice
- Spontaneous Beliaev-Landau scattering out of equilibrium
- Nonequilibrium polariton dynamics in a Bose-Einstein condensate coupled to an optical cavity
- Bound Bogoliubov quasiparticles in photon superfluids