Coherent spin mixing dynamics in thermal ${}^{87}$Rb spin-1 and spin-2 gases

Abstract

We study the non-equilibrium coherent spin mixing dynamics in ferromagnetic spin-1 and antiferromagnetic spin-2 thermal gases of ultracold ${}^{87}$Rb atoms. Long lasting spin population oscillations with magnetic field dependent resonances are observed in both cases. Our observations are well reproduced by Boltzmann equations of the Wigner distribution function. Compared to the equation of motion of spinor Bose-Einstein condensates, the only difference here is a factor of two increase in the spin-dependent interaction, which is confirmed directly in the spin-2 case by measuring the relation between the oscillation amplitude and the sample's density.

2 figures

References in corpus (6)

• Strong saturation absorption imaging of dense clouds of ultracold atoms
• Precision measurement of spin-dependent interaction strengths for spin-1 and spin-2 87Rb atoms
• Spinor Dynamics in an Antiferromagnetic Spin-1 Condensate
• Coherent collisional spin dynamics in optical lattices
• Magnetically tuned spin dynamics resonance
• Spin dynamics of a trapped spin-1 Bose Gas above the Bose-Einstein transition temperature

Cited by in corpus (5)

• Coherent heteronuclear spin dynamics in an ultracold spin-1 mixture
• Manipulation of heteronuclear spin dynamics with microwave and vector light shift
• Engineering Dynamical Phase Diagrams with Driven Lattices in Spinor Gases
• Metastable spin-phase diagrams in antiferromagnetic Bose-Einstein condensates
• Control of dynamical phase transitions and non-ergodic relaxation via spinor phases