Long-range interactions in a quantum gas mediated by diffracted light
arXiv:2307.05398 · doi:10.1103/PhysRevResearch.5.L032004
Abstract
A BEC interacting with an optical field via a feedback mirror can be a realisation of the quantum Hamiltonian Mean Field (HMF) model, a paradigmatic model of long-range interactions in quantum systems. We demonstrate that the self-structuring instability displayed by an initially uniform BEC can evolve as predicted by the quantum HMF model, displaying quasiperiodic "chevron" dynamics for strong driving. For weakly driven self-structuring, the BEC and optical field behave as a two-state quantum system, regularly oscillating between a spatially uniform state and a spatially periodic state. It also predicts the width of stable optomechanical droplets and the dependence of droplet width on optical pump intensity. The results presented suggest that optical diffraction-mediated interactions between atoms in a BEC may be a route to experimental realisation of quantum HMF dynamics and a useful analogue for studying quantum systems involving long-range interactions.
References in corpus (12)
- The Dicke Quantum Phase Transition with a Superfluid Gas in an Optical Cavity
- Observation of quantum droplets in a strongly dipolar Bose gas
- Quantum-fluctuation-driven crossover from a dilute Bose-Einstein condensate to a macro-droplet in a dipolar quantum fluid
- Bose-Einstein Condensates in Optical Lattices: Band-Gap Structure and Solitons
- Dynamics and thermodynamics of a simple model similar to self-gravitating systems: the HMF model
- Selfsynchronization and dissipation-induced threshold in collective atomic recoil lasing
- Prethermalization of atoms due to photon-mediated long-range interactions
- Long-range interactions and symmetry-breaking in quantum gases through optical feedback
- Collective Atomic Recoil Lasing Including Friction and Diffusion Effects
- Violent relaxation in quantum fluids with long-range interactions
- Experimental perspectives for systems based on long-range interactions
- Balancing long-range interactions and quantum pressure: solitons in the HMF model