Inelastic collisions in radiofrequency-dressed mixtures of ultracold atoms

Abstract

Radiofrequency (RF)-dressed potentials are a promising technique for manipulating atomic mixtures, but so far little work has been undertaken to understand the collisions of atoms held within these traps. In this work, we dress a mixture of 85Rb and 87Rb with RF radiation, characterize the inelastic loss that occurs, and demonstrate species-selective manipulations. Our measurements show the loss is caused by two-body 87Rb+85Rb collisions, and we show the inelastic rate coefficient varies with detuning from the RF resonance. We explain our observations using quantum scattering calculations, which give reasonable agreement with the measurements. The calculations consider magnetic fields both perpendicular to the plane of RF polarization and tilted with respect to it. Our findings have important consequences for future experiments that dress mixtures with RF fields.

arXiv comment12 pages, 7 figures, 1 table

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Cited by in corpus (5)

• Observation of the BKT Transition in a 2D Bose Gas via Matter-Wave Interferometry
• Universal Scaling of the Dynamic BKT Transition in Quenched 2D Bose Gases
• Quantum Simulations with Bilayer 2D Bose Gases in Multiple-RF-dressed Potentials
• Observation of a Bilayer Superfluid with Interlayer Coherence
• Detecting Phase Coherence of 2D Bose Gases via Noise Correlations