Quantum dynamics of Raman-coupled Bose-Einstein condensates using Laguerre-Gaussian beams
arXiv:cond-mat/0702649 · doi:10.1103/PhysRevA.75.063623
Abstract
We investigate the quantum dynamics of Raman-coupled Bose-Einstein condensates driven by laser beams that carry orbital angular momentum. By adiabatically eliminating the excited atomic state we obtain an effective two-state Hamiltonian for the coupled condensates, and quantization of the matter-wave fields results in collapse and revivals in the quantum dynamics. We show that the revival period depends on whether the initial nonrotating condensate displays broken U(1) symmetry or not, and that the difference may be detected by measuring the motion of quantized vortices that are nested in the density profile of the Raman-coupled condensates. We further study the steady-state population transfer using a linear sweep of the two-photon detuning, by which the atomic population is coherently transferred from an initial nonrotating state to the final vortex state.
10 pages, 6 figures
References in corpus (14)
- Vortices in a Bose-Einstein Condensate
- Collapse and Revival of the Matter Wave Field of a Bose-Einstein Condensate
- Quantized Rotation of Atoms From Photons with Orbital Angular Momentum
- Watching a superfluid untwist itself: Recurrence of Rabi oscillations in a Bose-Einstein condensate
- Dynamical Instability of a Doubly Quantized Vortex in a Bose-Einstein condensate
- Creation of Dark Solitons and Vortices in Bose-Einstein Condensates
- Quantum state of two trapped Bose-Einstein condensates with a Josephson coupling
- The Vortex Phase Qubit: Generating Arbitrary, Counter-Rotating, Coherent Superpositions in Bose-Einstein Condensates via Optical Angular Momentum Beams
- Vortex coupler for atomic Bose-Einstein condensates
- Preparing and probing atomic number states with an atom interferometer
- Collapses and revivals in the interference between two Bose-Einstein condensates formed in small atomic samples
- Cavity QED determination of atomic number statistics in optical lattices
- Cavity QED Detection of Interfering Matter Waves
- Testing Broken U(1) Symmetry in a Two-Component Atomic Bose-Einstein Condensate
Cited by in corpus (11)
- Optomechanics based on angular momentum exchange between light and matter
- Half-skyrmion and meron pair in spinor condensates
- Vortex entanglement in Bose-Einstein condensates coupled to Laguerre-Gauss beams
- Tunable Polarons in Bose-Einstein Condensates
- Quantum pump for counter-circulations in a spinor Bose-Einstein condensate
- Superradiance induced topological vortex phase in a Bose-Einstein condensate
- Collectively induced many-vortices topology via rotatory Dicke quantum phase transition
- The non-Abelian bosonic quantum ring
- Mechanical memory for photons with orbital angular momentum
- Bose-Einstein condensation transition studies for atoms confined in Laguerre-Gaussian laser modes
- Pattern Formation and Evidence of Quantum Turbulence in Binary Bose-Einstein Condensates Interacting with a Pair of Laguerre-Gaussian Laser Beams