Dynamics of spin-2 Bose condensate driven by external magnetic fields

Abstract

Dynamic response of the F=2 spinor Bose-Einstein condensate (BEC) under the influence of external magnetic fields is studied. A general formula is given for the oscillation period to describe population transfer from the initial polar state to other spin states. We show that when the frequency and the reduced amplitude of the longitudinal magnetic field are related in a specific manner, the population of the initial spin-0 state will be dynamically localized during time evolution. The effects of external noise and nonlinear spin exchange interaction on the dynamics of the spinor BEC are studied. We show that while the external noise may eventually destroy the Rabi oscillations and dynamic spin localization, these coherent phenomena are robust against the nonlinear atomic interaction.

16 pages, 7 figures. accepted by Phys. Rev. A

References in corpus (9)

• Spinor Bose Condensates in Optical Traps
• Spin domains in ground state spinor Bose-Einstein condensates
• Optical Confinement of a Bose-Einstein Condensate
• Bose-Einstein condensation with internal degrees of freedom in alkali atom gases
• Quantum spins mixing in spinor Bose-Einstein condensates
• Measurements of Relative Phase in Binary Mixtures of Bose-Einstein Condensates
• Observation of metastable states in spinor Bose-Einstein condensates
• Exact Eigenstates and Magnetic Response of Spin-1 and Spin-2 Vectorial Bose-Einstein Condensates
• The Phase Diagrams of F=2 Spinor Bose Condensates

Cited by in corpus (4)

• The Population Oscillation of Multicomponent Spinor Bose-Einstein Condensate Induced by Nonadiabatic Transitions
• Observation of Caustics in the Trajectories of Cold Atoms in a Linear Magnetic Potential
• Superfluid-Mott Insulator Transition of Spin-2 Cold Bosons in an Optical Lattice in a Magnetic Field
• Tunneling effect of the spin-2 Bose condensate driven by external magnetic fields