Coupling of magnetic and optomechanical structuring in cold atoms
arXiv:2108.12064 · doi:10.1103/PhysRevA.105.063508
Abstract
Self-organized phases in cold atoms as a result of light-mediated interactions can be induced by coupling to internal or external degrees of the atoms. There has been growing interest in the interaction of internal spin degrees of freedom with the optomechanical dynamics of the external centre-of-mass motion. We present a model for the coupling between magnetic and optomechanical structuring in a system in a single-mirror feedback scheme, being representative for a larger class of diffractively coupled systems such as longitudinally pumped cavities and counter-propagating beam schemes. For negative detunings, a linear stability analysis demonstrates that optical pumping and optomechanical driving cooperate to create magnetic ordering. However, for long-period transmission gratings the magnetic driving will strongly dominate the optomechanical driving, unless one operates very close to the existence range of the magnetic instability. At small lattice periods, in particular at wavelength-scale periods, the optomechanical driving will dominate.
References in corpus (20)
- The Dicke Quantum Phase Transition with a Superfluid Gas in an Optical Cavity
- Cold atoms in cavity-generated dynamical optical potentials
- Proposed realization of the Dicke-model quantum phase transition in an optical cavity QED system
- Introduction to the Dicke model: from equilibrium to nonequilibrium, and vice versa
- Cavity QED with Quantum Gases: New Paradigms in Many-Body Physics
- Spinor self-ordering of a quantum gas in a cavity
- Formation of a spin texture in a quantum gas coupled to a cavity
- Supermode-Density-Wave-Polariton Condensation
- Selfsynchronization and dissipation-induced threshold in collective atomic recoil lasing
- An optical lattice with sound
- Disorder-Driven Density and Spin Self-Ordering of a Bose-Einstein Condensate in a Cavity
- Long-range interactions and symmetry-breaking in quantum gases through optical feedback
- Negative-mass instability of the spin and motion of an atomic gas driven by optical cavity backaction
- Opto-Mechanical Pattern Formation in Cold Atoms
- Spontaneous emergence of free-space optical and atomic patterns
- Multiple self-organized phases and spatial solitons in cold atoms mediated by optical feedback
- Semiclassical theory of synchronization-assisted cooling
- Thick-medium model of transverse pattern formation in optically excited cold two-level atoms with a feedback mirror
- Transverse optical and atomic pattern formation
- Spin and density self-ordering in dynamic polarization gradients fields