Radio-Frequency Transitions on Weakly-Bound Ultracold Molecules

Abstract

We show that radio-frequency spectroscopy on weakly-bound molecules is a powerful and sensitive tool to probe molecular energy structure as well as atomic scattering properties. An analytic expression of the rf excitation lineshape is derived, which in general contains a bound-free component and a bound-bound component. In particular, we show that the bound-free process strongly depends on the sign of the scattering length in the outgoing channel and acquires a Fano-type profile near a Feshbach resonance. The derived lineshapes provide an excellent fit to both the numerical calculation and the experimental measurements.

References in corpus (4)

• Observation of the Pairing Gap in a Strongly Interacting Fermi Gas
• Creation of ultracold molecules from a Fermi gas of atoms
• Variational calculations of dispersion coefficients for interactions between H, He, and Li atoms
• Radio-Frequency Spectroscopy of Ultracold Fermions

Cited by in corpus (69)

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• Precise determination of ${}^6$Li cold collision parameters by radio-frequency spectroscopy on weakly bound molecules
• Verification of universal relations in a strongly interacting Fermi gas
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• Radiofrequency spectroscopy of a strongly interacting two-dimensional Fermi gas
• Ultracold Fermionic Feshbach Molecules of ${}^{23}$Na${}^{40}$K
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• Evolution of Fermion Pairing from Three to Two Dimensions
• Spectral Functions and rf Response of Ultracold Fermionic Atoms
• Determination of the Fermion Pair Size in a Resonantly Interacting Superfluid
• Theory of RF-spectroscopy of strongly interacting Fermions
• Decoherence of Impurities in a Fermi Sea of Ultracold Atoms
• Short-Time Operator Product Expansion for rf Spectroscopy of a Strongly-interacting Fermi Gas
• Breakdown of Fermi liquid description for strongly interacting fermions
• Evidence for universal relations describing a gas with $p$-wave interactions
• Coherence and clock shifts in ultracold Fermi gases with resonant interactions
• Spectroscopy of Ultracold, Trapped Cesium Feshbach Molecules
• Observation of a smooth polaron-molecule transition in a degenerate Fermi gas
• Enhanced paraconductivity-like fluctuations in the radio frequency spectra of ultracold Fermi atoms
• Temperature and coupling dependence of the universal contact intensity for an ultracold Fermi gas
• Cruising through molecular bound state manifolds with radio frequency
• Observation of Efimov molecules created from a resonantly interacting Bose gas
• Pseudogaps in strongly interacting Fermi gases
• Precision Test of the Limits to Universality in Few-Body Physics
• Controlled state-to-state atom-exchange reaction in an ultracold atom-dimer mixture
• Radio frequency spectroscopy and the pairing gap in trapped Fermi gases
• Stability and breakdown of Fermi polarons in a strongly interacting Fermi-Bose mixture
• Formation of Ultracold NaRb Feshbach Molecules
• Spin-correlation functions in ultracold paired atomic-fermion systems: sum rules, self-consistent approximations, and mean fields
• Competition between final-state and pairing-gap effects in the radio-frequency spectra of ultracold Fermi atoms
• Radiative capture reactions in lattice effective field theory
• Clock shift in a strongly interacting two-dimensional Fermi gas
• Radio frequency association of heteronuclear Feshbach molecules
• Physics of ultracold Fermi gases revealed by spectroscopies
• Final-state effects in the radio frequency spectrum of strongly interacting fermions
• Universality of weakly bound dimers and Efimov trimers close to Li-Cs Feshbach resonances
• High Sensitivity RF Spectroscopy of a Strongly-Interacting Fermi Gas
• Suppression of Unitary Three-body Loss in a Degenerate Bose-Fermi Mixture
• Polarons and Molecules in a Fermi Gas with Orbital Feshbach Resonance
• Radio frequency spectra of Feshbach molecules in quasi-two dimensional geometries
• Temperature and final state effects in radio frequency spectroscopy experiments on atomic Fermi gases
• Improved characterization of Feshbach resonances and interaction potentials between ${}^{23}$Na and ${}^{87}$Rb atoms
• Radio-frequency spectroscopy of weakly bound molecules in spin-orbit coupled atomic Fermi gases
• Enhanced association and dissociation of heteronuclear Feshbach molecules in a microgravity environment
• Momentum-resolved radio-frequency spectroscopy of a spin-orbit coupled atomic Fermi gas near a Feshbach resonance in harmonic traps
• A simple mean field equation for condensates in the BEC-BCS crossover regime
• Collisional cooling of ultra-cold atom ensembles using Feshbach resonances
• Three-body rf association of Efimov trimers
• Photoassociative Spectroscopy of a Halo Molecule in ${}^{86}$Sr
• Photodissociation of long-range Rydberg molecules
• State-to-state endothermic and nearly thermoneutral reactions in an ultracold atom-dimer mixture
• Tuning a magnetic Feshbach resonance with spatially modulated laser light
• Dynamic structure factor of one-dimensional Fermi superfluid with spin-orbit coupling
• Multipole Analysis of Radio-Frequency Reactions in Ultra-Cold Atoms
• Generic features of the spectrum of trapped polarized fermions
• Observation of a Halo Trimer in an Ultracold Bose-Fermi Mixture
• Experimental realization of BCS-BEC crossover physics with a Fermi gas of atoms
• Quasiparticles, coherence and nonlinearity: exact simulations of RF-spectroscopy of strongly interacting one-dimensional Fermi gases
• High-intensity two-frequency photoassociation spectroscopy of a weakly bound molecular state: theory and experiment
• Dark state transport between unitary Fermi superfluids
• Peaks and widths of radio-frequency spectra: An analysis of the phase diagram of ultra-cold Fermi gases
• Dimer-projection contact and the clock shift of a unitary Fermi gas
• Log-Periodic Oscillations in the Photo Response of Efimov Trimers
• Pairing and molecule formation along the BEC-BCS crossover for finite range potentials
• Photoassociation of Universal Efimov Trimers