Controlling phase separation of binary Bose-Einstein condensates via mixed-spin-channel Feshbach resonance

Abstract

We investigate controlled phase separation of a binary Bose-Einstein condensate (BEC) in the proximity of mixed-spin-channel Feshbach resonance in the |F = 1, mF = +1> and |F = 2,mF = -1> states of 87Rb at a magnetic field of 9.10 G. Phase separation occurs on the lower magnetic-field side of the Feshbach resonance while the two components overlap on the higher magnetic-field side. The Feshbach resonance curve of the scattering length is obtained from the shape of the atomic cloud by comparison with the numerical analysis of coupled Gross-Pitaevskii equations.

6 pages, 5 figures

References in corpus (9)

• Nonlinear atom interferometer surpasses classical precision limit
• Precision measurement of spin-dependent interaction strengths for spin-1 and spin-2 87Rb atoms
• Tuning of heteronuclear interactions in a quantum-degenerate Fermi-Bose mixture
• Feshbach resonances in ultracold atomic and molecular collisions: threshold behaviour and suppression of poles in scattering lengths
• Spatially inhomogeneous phase evolution of a two-component Bose-Einstein condensate
• Radio-frequency dressing of multiple Feshbach resonances
• Spin-dependent inelastic collisions in spin-2 Bose-Einstein condensates
• Coherently controlled entanglement generation in a binary Bose-Einstein condensate
• Spin echo in spinor dipolar Bose-Einstein condensates

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