Photoassociation of a Bose-Einstein Condensate near a Feshbach Resonance

Abstract

We measure the effect of a magnetic Feshbach resonance (FR) on the rate and light-induced frequency shift of a photoassociation resonance in ultracold ${}^7$Li. The photoassociation-induced loss rate coefficient, $K_p$, depends strongly on magnetic field, varying by more than a factor of 10${}^4$ for fields near the FR. At sufficiently high laser intensities, $K_p$ for a thermal gas decreases with increasing intensity, while saturation is observed for the first time in a Bose-Einstein condensate. The frequency shift is also strongly field-dependent and exhibits an anomalous blue-shift for fields just below the FR.

arXiv comment4 pages, 4 figures. v2: updated comparison with theory; added references; added tick marks to Fig. 1 inset. To be published in Phys. Rev. Letters

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Cited by in corpus (52)

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• Cold and Ultracold Molecules: Science, Technology, and Applications
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• Observation of the Mott Insulator to Superfluid Crossover of a Driven-Dissipative Bose-Hubbard System
• Controlling a magnetic Feshbach resonance with laser light
• Quantized Quasi-Two Dimensional Bose-Einstein Condensates with Spatially Modulated Nonlinearity
• Dissipative Transport of a Bose-Einstein Condensate
• Pseudogaps in strongly interacting Fermi gases
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• Efficient formation of ground state ultracold molecules via STIRAP from the continuum at a Feshbach resonance
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• Observation of photoassociation resonances in ultracold atom-molecule collisions
• Stirring trapped atoms into fractional quantum Hall puddles
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• Creation and manipulation of bound states in continuum with lasers: Applications to cold atoms and molecules
• Feshbach-optimized photoassociation of ultracold ${}^6$Li${}^{87}$Rb molecules with short pulses
• Achieving ground-state polar molecular condensates by chainwise atom-molecule adiabatic passage
• Magneto-optical Feshbach resonance: Controlling cold collision with quantum interference
• Two-body recombination in a quantum mechanical lattice gas: Entropy generation and probing of short-range magnetic correlations
• Resonant enhancement of ultracold photoassociation rate by electric field induced anisotropic interaction
• Observation of Deeply-Bound ${}^{85}$Rb${}_2$ Vibrational Levels Using Feshbach Optimized Photoassociation
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• Two-channel model of photoassociation in the vicinity of a Feshbach resonance
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• Mimicking multi-channel scattering with single-channel approaches
• Trimer superfluid induced by photoassocation on the state-dependent optical lattice
• Feshbach-resonant Raman photoassociation in a Bose-Einstein condensate
• Fano effect in an ultracold atom-molecule coupled system
• Resonant Manipulation of d-wave Interaction of Cold Atoms with Two Lasers and a Magnetic Field
• Efficient production of polar molecular Bose-Einstein condensates via an all-optical R-type atom-molecule adiabatic passage
• Radio-Frequency Manipulation of Fano-Feshbach Resonances in an Ultracold Fermi Gas of ${}^{40}$K
• Spin liquid phases of Mott insulating ultracold bosons
• Theory of Combined Photoassociation and Feshbach Resonances in a Bose-Einstein Condensate
• Quantum dimer models emerging from large-spin ultracold atoms
• Quantum Effects at Low Energy Atom-Molecule Interface
• Collective dynamical Fermi suppression of optically-induced inelastic scattering
• Many-Body Rate Limit on Photoassociation of a Bose-Einstein Condensate
• Macroscopic Particle Transport in Dissipative Long-Range Bosonic Systems
• Creating a Quantum Degenerate Gas of Stable Molecules via Weak Photoassociation
• Photoassociation spectroscopy of weakly bound ${}^{87}R{b}_2$ molecules near $5P_{1/2}+5S_{1/2}$ threshold by optical Bragg scattering in Bose-Einstein condensates