Spinor Dynamics in an Antiferromagnetic Spin-1 Condensate

Abstract

We observe coherent spin oscillations in an antiferromagnetic spin-1 Bose-Einstein condensate of sodium. The variation of the spin oscillations with magnetic field shows a clear signature of nonlinearity, in agreement with theory, which also predicts anharmonic oscillations near a critical magnetic field. Measurements of the magnetic phase diagram agree with predictions made in the approximation of a single spatial mode. The oscillation period yields the best measurement to date of the sodium spin-dependent interaction coefficient, determining that the difference between the sodium spin-dependent s-wave scattering lengths $a_{f=2}-a_{f=0}$ is $2.47\pm 0.27$ Bohr radii.

5 pages, 2 figures. Changes: added reference, minor corrections

References in corpus (4)

• Precision measurement of spin-dependent interaction strengths for spin-1 and spin-2 87Rb atoms
• Magnetically tuned spin dynamics resonance
• All-optical generation and photoassociative probing of sodium Bose-Einstein condensates
• Predicting spinor condensate dynamics from simple principles

Cited by in corpus (7)

• Quantum Phase Transitions and Continuous Observation of Spinor Dynamics in an Antiferromagnetic Condensate
• Multi-resonant spinor dynamics in a Bose-Einstein condensate
• Dynamical and energetic instabilities in multi-component Bose-Einstein condensates in optical lattices
• Quantum Noise, Scaling and Domain Formation in a Spinor BEC
• Excited spin states and phase separation in spinor Bose-Einstein condensates
• Spin-Domain Formation in Antiferromagnetic Condensates
• Analog cosmology with spinor Bose-Einstein condensates