Tunnelling of condensate magnetization in a double-well potential
arXiv:quant-ph/0501165 · doi:10.1103/PhysRevA.71.053616
Abstract
We study quantum dynamical properties of a spin-1 atomic Bose-Einstein condensate in a double-well potential. Adopting a mean field theory and single spatial mode approximation, we characterize our model system as two coupled spins. For certain initial states, we find full magnetization oscillations between wells not accompanied by mass (or atom numbers) exchange. We identify dynamic regimes of collective spin variables arising from nonlinear self-interactions that are different from the usual Josephson oscillations. We also discuss magnetization beats and incomplete oscillations of collective spin variables other than the magnetization. Our study points to an alternative approach to observe coherent tunnelling of a condensate through a (spatial) potential barrier.
5 pages, 5 figures, submitted to Physical Review A
References in corpus (14)
- Spinor Bose Condensates in Optical Traps
- Quantum Coherent Atomic Tunneling between Two Trapped Bose-Einstein Condensates
- Optical Confinement of a Bose-Einstein Condensate
- All Optical Formation of an Atomic Bose-Einstein Condensate
- Quantum spins mixing in spinor Bose-Einstein condensates
- Fragmented and Single Condensate Ground States of Spin-1 Bose Gas
- Spatial fragmentation of a Bose-Einstein condensate in a double-well potential
- On the single mode approximation in spinor-1 atomic condensate
- Josephson effects in dilute Bose-Einstein condensates
- Josephson Effect in BEC with Spin Degree of Freedom
- Mesoscopic quantum coherence in an optical lattice
- Entangled quantum tunneling of two-component Bose-Einstein condensates
- Macroscopic spin tunneling and quantum critical behavior of a condensate in double-well potential
- Quantum phase diffusions of a spinor condensate
Cited by in corpus (8)
- Spinor Bose-Einstein condensates
- Non-Abelian Josephson effect between two spinor Bose-Einstein condensates in double optical traps
- Spin Josephson vortices in two tunnel coupled spinor Bose gases
- Collisionally inhomogeneous Bose-Einstein condensates in double-well potentials
- Spinor Bose-Einstein condensates in double well potentials
- Spin-driven spatial symmetry breaking of spinor condensates in a double-well
- Spin Josephson effects of spin-orbit-coupled Bose-Einstein condensates in a non-Hermitian double well
- Interaction-controlled impurity transport in trapped mixtures of ultracold bosons