Magneto-optical Feshbach resonance: Controlling cold collision with quantum interference

Abstract

We propose a method of controlling two-atom interaction using both magnetic and laser fields. We analyse the role of quantum interference between magnetic and optical Feshbach resonances in controlling cold collision. In particular, we demonstrate that this method allows us to suppress inelastic and enhance elastic scattering cross sections. Quantum interference is shown to modify significantly the threshold behaviour and resonant interaction of ultracold atoms. Furthermore, we show that it is possible to manipulate not only the spherically symmetric s-wave interaction but also the anisotropic higher partial-wave interactions which are particularly important for high temperature superfluid or superconducting phases of matter.

7 pages 3 figures, some minor errors are corrected, Accepted in J. Phys. B

References in corpus (14)

• A High Phase-Space-Density Gas of Polar Molecules
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• Coherent optical transfer of Feshbach molecules to a lower vibrational state
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• Universal relation between magnetic resonance and superconducting gap in unconventional superconductors
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• Controlling collisions of ultracold atoms with dc electric fields
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• Rotational excitations in two-color photoassociation

Cited by in corpus (7)

• Spin squeezing by tensor twisting and Lipkin-Meshkov-Glick dynamics in a toroidal Bose-Einstein condensate with spatially modulated nonlinearity
• Optical Control of the Scattering Length and Effective Range for Magnetically Tunable Feshbach Resonances in Ultracold Gases
• Creation and manipulation of bound states in continuum with lasers: Applications to cold atoms and molecules
• Vacuum-Induced Coherence in Ultracold Photoassociative Ro-Vibrational Excitations
• Resonant Manipulation of d-wave Interaction of Cold Atoms with Two Lasers and a Magnetic Field
• Finite-range model potentials for resonant interactions
• Quantum Effects at Low Energy Atom-Molecule Interface