Pure Gas of Optically Trapped Molecules Created from Fermionic Atoms

Abstract

We report on the production of a pure sample of up to 3x10^5 optically trapped molecules from a Fermi gas of 6Li atoms. The dimers are formed by three-body recombination near a Feshbach resonance. For purification a Stern-Gerlach selection technique is used that efficiently removes all trapped atoms from the atom-molecule mixture. The behavior of the purified molecular sample shows a striking dependence on the applied magnetic field. For very weakly bound molecules near the Feshbach resonance, the gas exhibits a remarkable stability with respect to collisional decay.

4 pages, 5 figures

References in corpus (22)

• Observation of a Strongly-Interacting Degenerate Fermi Gas of Atoms
• Creation of ultracold molecules from a Fermi gas of atoms
• Atom--Molecule Coherence in a Bose-Einstein Condensate
• Conversion of an Atomic Fermi Gas to a Long-Lived Molecular Bose Gas
• Resonance superfluidity in a quantum degenerate Fermi gas
• The BCS-BEC Crossover in a Gas of Fermi Atoms with a Feshbach Resonance
• Production of Long-Lived Ultracold Li2 Molecules from a Fermi gas
• Prospect of creating a composite fermi/bose superfluid
• Measurement of interaction energy near a Feshbach resonance in a 6Li Fermi gas
• Superfluidity of spin-polarized 6Li
• Three-body problem in Fermi gases with short-range interparticle interaction
• Radio-Frequency Spectroscopy of Ultracold Fermions
• All-Optical Production of a Degenerate Fermi Gas
• Resonant control of elastic collisions in an optically trapped Fermi gas of atoms
• Decay of an ultracold fermionic lithium gas near a Feshbach resonance
• Elastic and inelastic collisions of 6Li in magnetic and optical traps
• Measurement of the Zero Crossing in a Feshbach Resonance of Fermionic 6-Li
• Sensitive Detection of Cold Cesium Molecules by Radiative Feshbach Spectroscopy
• Signatures of resonance superfluidity in a quantum Fermi gas
• Recombination of three ultracold fermionic atoms
• Magnetic field control of elastic scattering in a cold gas of fermionic lithium atoms
• Resonator-Enhanced Optical Dipole Trap for Fermionic Lithium Atoms

Cited by in corpus (204)

• Many-Body Physics with Ultracold Gases
• Feshbach Resonances in Ultracold Gases
• Observation of resonance condensation of fermionic atom pairs
• Condensation of Pairs of Fermionic Atoms Near a Feshbach Resonance
• Production of cold molecules via magnetically tunable Feshbach resonances
• Observation of Bose-Einstein Condensation of Molecules
• Crossover from a molecular Bose-Einstein condensate to a degenerate Fermi gas
• Weakly bound dimers of fermionic atoms
• Confinement induced molecules in a 1D Fermi gas
• Production of Long-Lived Ultracold Li2 Molecules from a Fermi gas
• Observation of Heteronuclear Feshbach Resonances in a Bose-Fermi Mixture
• Precise determination of ${}^6$Li cold collision parameters by radio-frequency spectroscopy on weakly bound molecules
• Manipulation of Molecules with Electromagnetic Fields
• Spin 1/2 Fermions in the Unitary Regime: A Superfluid of a New Type
• Molecules of Fermionic Atoms in an Optical Lattice
• The BCS-BEC crossover: From ultra-cold Fermi gases to nuclear systems
• Critical Temperature and Thermodynamics of Attractive Fermions at Unitarity
• Multiplet Structure of Feshbach Resonances in non-zero partial waves
• Radiofrequency spectroscopy of a strongly interacting two-dimensional Fermi gas
• p-Wave Interactions in Low-Dimensional Fermionic gases
• Ultra-cold Polarized Fermi Gases
• Observation of a two-dimensional Fermi gas of atoms
• BCS-BEC crossover at finite temperature for superfluid trapped Fermi atoms
• Bragg spectroscopy of a strongly interacting Fermi gas
• Observation of an orbital interaction-induced Feshbach resonance in 173-Yb
• Formation and interactions of cold and ultracold molecules: new challenges for interdisciplinary physics
• Quantum Monte Carlo Simulations of the BCS-BEC Crossover at Finite Temperature
• Observation of Feshbach resonances in an ultracold gas of ${}^{52}$Cr
• Observation of Heteronuclear Feshbach Molecules from a ${}^{85}$Rb - ${}^{87}$Rb gas
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• Magnetic Tuning of the Relativistic BCS-BEC Crossover
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• Hydrodynamic Modes in a Trapped Strongly Interacting Fermi Gases of Atoms
• Molecular Feshbach dissociation as a source for motionally entangled atoms
• Strongly interacting fermions in an optical lattice
• Atom-molecule equilibration in a degenerate Fermi gas with resonant interactions
• Fermi-Bose Mixtures Near Broad Interspecies Feshbach Resonances
• Optically trapped Feshbach molecules of fermionic 161Dy and 40K
• Dressed-molecules in resonantly-interacting ultracold atomic Fermi gases
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• Chaotic scattering in the presence of a dense set of overlapping Feshbach resonances
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