Radio frequency association of heteronuclear Feshbach molecules

Abstract

We present a detailed analysis of the production efficiency of weakly bound heteronuclear KRb-Feshbach molecules using radio frequency association in a harmonic trap. The efficiency was measured in a wide range of temperatures, binding energies and radio frequencies. A comprehensive analytical model is presented, explaining the observed asymmetric spectra and achieving good quantitative agreement with the measured production rates. This model provides a deep understanding of the molecule association process and paves the way for future experiments which rely on Feshbach molecules e.g. for the production of deeply bound molecules.

5 pages, 4 figures

References in corpus (23)

• A High Phase-Space-Density Gas of Polar Molecules
• Observation of the Pairing Gap in a Strongly Interacting Fermi Gas
• Formation of ultracold polar molecules in the rovibrational ground state
• Quantum Gas of Deeply Bound Ground State Molecules
• Ultracold heteronuclear molecules in a 3D optical lattice
• Exploring an ultracold Fermi-Fermi mixture: Interspecies Feshbach resonances and scattering properties of 6Li and 40K
• Ultracold dense gas of deeply bound heteronuclear molecules
• Optical pumping and vibrational cooling of molecules
• Quantum degenerate two-species Fermi-Fermi mixture coexisting with a Bose-Einstein condensate
• Coherent optical transfer of Feshbach molecules to a lower vibrational state
• Tuning of heteronuclear interactions in a quantum-degenerate Fermi-Bose mixture
• Magneto-electrostatic trapping of ground state OH molecules
• Observation of Heteronuclear Feshbach Molecules from a ${}^{85}$Rb - ${}^{87}$Rb gas
• Collisional stability of fermionic Feshbach molecules
• Heteronuclear molecules in an optical dipole trap
• The coupling of the X${}^1{\Sigma }^{+}$ and a${}^3{\Sigma }^{+}$ states of KRb
• Radio-Frequency Transitions on Weakly-Bound Ultracold Molecules
• Accurate near-threshold model for ultracold KRb dimers from interisotope Feshbach spectroscopy
• Heteronuclear molecules in an optical lattice: Theory and experiment
• KRb Feshbach Resonances: Modeling the interatomic potential
• Association of molecules using a resonantly modulated magnetic field
• Cold SO_2 molecules by Stark deceleration
• Transport of a quantum degenerate heteronuclear Bose-Fermi mixture in a harmonic trap

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• Feshbach Resonances in Ultracold Gases
• Cold and Ultracold Molecules: Science, Technology, and Applications
• Bose polarons in the strongly interacting regime
• Dipolar physics: A review of experiments with magnetic quantum gases
• Ultracold Fermionic Feshbach Molecules of ${}^{23}$Na${}^{40}$K
• Creation of a low-entropy quantum gas of polar molecules in an optical lattice
• Radio Frequency Association of Efimov Trimers
• Tests of universal three-body physics in an ultracold Bose-Fermi mixture
• Multi-resonant spinor dynamics in a Bose-Einstein condensate
• Controlled state-to-state atom-exchange reaction in an ultracold atom-dimer mixture
• Universal three-body physics in ultracold KRb mixtures
• Doublon dynamics and polar molecule production in an optical lattice
• Ultracold field-linked tetratomic molecules
• Feshbach molecule formation in a Bose-Fermi mixture
• Thermalization and Sub-Poissonian Density Fluctuations in a Degenerate Molecular Fermi Gas
• Universality of weakly bound dimers and Efimov trimers close to Li-Cs Feshbach resonances
• Looking for "avalanche-mechanism" loss at an atom-molecule Efimov resonance
• Vibrational stabilization of ultracold KRb molecules. A comparative study
• Suppression of Unitary Three-body Loss in a Degenerate Bose-Fermi Mixture
• Two-element Zeeman Slower for Rubidium and Lithium
• Enhanced association and dissociation of heteronuclear Feshbach molecules in a microgravity environment
• Observation of bound state self-interaction in a nano-eV atom collider
• Cold atom-dimer reaction rates with ${}^4$He, ${}^{6,7}$Li and ${}^{23}$Na
• Multipole Analysis of Radio-Frequency Reactions in Ultra-Cold Atoms
• Quenched Magneto-association of Ultracold Feshbach Molecules
• Observing S-Matrix Pole Flow in Resonance Interplay: Cold Collisions of Ultracold Atoms in a Miniature Laser-based Accelerator
• Log-Periodic Oscillations in the Photo Response of Efimov Trimers
• Photoassociation of Universal Efimov Trimers
• Three-body Physics in the Impurity Limit of 39K Bose-Einstein Condensates