Counter-diabatic vortex pump in spinor Bose-Einstein condensates
arXiv:1610.04132 · doi:10.1103/PhysRevA.95.013615
Abstract
Topological phase imprinting is a well-established technique for deterministic vortex creation in spinor Bose-Einstein condensates of alkali metal atoms. It was recently shown that counter-diabatic quantum control may accelerate vortex creation in comparison to the standard adiabatic protocol and suppress the atom loss due to nonadiabatic transitions. Here we apply this technique, assisted by an optical plug, for vortex pumping to theoretically show that sequential phase imprinting up to 20 cycles generates a vortex with a very large winding number. Our method significantly increases the fidelity of the pump for rapid pumping compared to the case without the counter-diabatic control, leading to the highest angular momentum per particle reported to date for the vortex pump. Our studies are based on numerical integration of the three-dimensional multi-component Gross-Pitaevskii equation which conveniently yields the density profiles, phase profiles, angular momentum, and other physically important quantities of the spin-1 system. Our results motivate the experimental realization of the vortex pump and studies of the rich physics it involves.
8 pages, 5 figures
References in corpus (11)
- Shortcut to adiabatic passage in two and three level atoms
- Quantized Rotation of Atoms From Photons with Orbital Angular Momentum
- Assisted finite-rate adiabatic passage across a quantum critical point: Exact solution for the quantum Ising model
- Observation of Dirac Monopoles in a Synthetic Magnetic Field
- Splitting Instability of a Multiply Charged Vortex in a Bose-Einstein Condensate
- Vortex pump for dilute Bose-Einstein condensates
- Stabilization and pumping of giant vortices in dilute Bose-Einstein condensates
- Quantum pump for counter-circulations in a spinor Bose-Einstein condensate
- Continuous vortex pumping into a spinor condensate with magnetic fields
- Topological Vortex Formation in BEC under Gravitational Field
- Vortex pump for Bose-Einstein condensates utilizing a time-averaged orbiting potential trap