Resonant control of elastic collisions in an optically trapped Fermi gas of atoms

Abstract

We have loaded an ultracold gas of fermionic atoms into a far off resonance optical dipole trap and precisely controlled the spin composition of the trapped gas. We have measured a magnetic-field Feshbach resonance between atoms in the two lowest energy spin-states, |9/2, -9/2> and |9/2, -7/2>. The resonance peaks at a magnetic field of 201.5 plus or minus 1.4 G and has a width of 8.0 plus or minus 1.1 G. Using this resonance we have changed the elastic collision cross section in the gas by nearly 3 orders of magnitude.

4 pages, 3 figures

References in corpus (10)

• A quasi-pure Bose-Einstein condensate immersed in a Fermi sea
• Resonance superfluidity in a quantum degenerate Fermi gas
• Controlled Collapse of a Bose-Einstein Condensate
• Prospect of creating a composite fermi/bose superfluid
• Pauli Blocking of Collisions in a Quantum Degenerate Atomic Fermi Gas
• Signatures of resonance superfluidity in a quantum Fermi gas
• Transition from Collisionless to Hydrodynamic Behaviour in an Ultracold Atomic Gas
• Resonator-Enhanced Optical Dipole Trap for Fermionic Lithium Atoms
• Spin Excitations in a Fermi Gas of Atoms
• Improved Characterization of Elastic Scattering Near a Feshbach Resonance in 85Rb

Cited by in corpus (141)

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• Theory of ultracold Fermi gases
• Observation of resonance condensation of fermionic atom pairs
• Universality in Few-body Systems with Large Scattering Length
• Production of cold molecules via magnetically tunable Feshbach resonances
• Observation of a Strongly-Interacting Degenerate Fermi Gas of Atoms
• Creation of ultracold molecules from a Fermi gas of atoms
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• Probing many-body states of ultra-cold atoms via noise correlations
• Fermi-Hubbard physics with atoms in an optical lattice
• The Luttinger model following a sudden interaction switch-on
• Tuning p-wave interactions in an ultracold Fermi gas of atoms
• Measurement of interaction energy near a Feshbach resonance in a 6Li Fermi gas
• Pure Gas of Optically Trapped Molecules Created from Fermionic Atoms
• Ultracold atoms out of equilibrium
• Measurement of positive and negative scattering lengths in a Fermi gas of atoms
• Feshbach resonances in rubidium 87: Precision measurement and analysis
• Observation of Heteronuclear Feshbach Resonances in a Bose-Fermi Mixture
• Three-body problem in Fermi gases with short-range interparticle interaction
• Solitons and Rabi Oscillations in a Time-Dependent BCS Pairing Problem
• Observation of molecules produced from a Bose-Einstein condensate
• Universal few-body physics and cluster formation
• Multiplet Structure of Feshbach Resonances in non-zero partial waves
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• Fifty-fold improvement in the number of quantum degenerate fermionic atoms
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• Dynamical vanishing of the order parameter in a fermionic condensate
• Superfluidity and collective modes in a uniform gas of Fermi atoms with a Feshbach resonance
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• Quantitative Determination of Temperature in the Approach to Magnetic Order of Ultracold Fermions in an Optical Lattice
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• Superfluid transition in quasi2D Fermi gases
• Interaction-controlled transport of an ultracold Fermi gas
• Measurement of the Zero Crossing in a Feshbach Resonance of Fermionic 6-Li
• Defect-Suppressed Atomic Crystals in an Optical Lattice
• Observation of a Transition Between Dynamical Phases in a Quantum Degenerate Fermi Gas
• Superfluid transition temperature in a trapped gas of Fermi atoms with a Feshbach resonance
• Collisional dynamics of ultracold OH molecules in an electrostatic field
• Broad Feshbach resonance in the 6Li-40K mixture
• Gray molasses cooling of ${}^{39}$K to a high phase-space density
• Dark state cooling of atoms by superfluid immersion
• Recombination of three ultracold fermionic atoms
• Viscosity and Thermal Relaxation for a resonantly interacting Fermi gas
• Potassium ground state scattering parameters and Born-Oppenheimer potentials from molecular spectroscopy
• Characterization of elastic scattering near a Feshbach resonance in rubidium 87
• Quasi-one-dimensional Bose gases with large scattering length
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• An effective theory of Feshbach resonances and many-body properties of Fermi gases
• Measurement of a Mixed Spin Channel Feshbach Resonance in Rubidium 87
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• Spontaneous Dissociation of 85Rb Feshbach Molecules
• Collective ferromagnetism in two-component Fermi-degenerate gas trapped in finite potential
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• Conventional character of the BCS-BEC cross-over in ultra-cold gases of 40K
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• Fermi 1D quantum gas: Luttinger liquid approach and spin-charge separation
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• Rotational Feshbach Resonances in Ultracold Molecular Collisions
• Breached Superfluidity via P-Wave Coupling
• Dynamical Selection in Emergent Fermionic Pairing
• Resonance effects on the crossover of bosonic to fermionic superfluidity
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• Observation of broad p-wave Feshbach resonances in ultracold ${}^{85}$Rb-${}^{87}$Rb mixtures
• Direct evaporative cooling of 41K into a Bose-Einstein condensate
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• Probing open- and closed-channel p-wave resonances
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