Accurate near-threshold model for ultracold KRb dimers from interisotope Feshbach spectroscopy

Abstract

We investigate magnetic Feshbach resonances in two different ultracold K-Rb mixtures. Information on the K(39)-Rb(87) isotopic pair is combined with novel and pre-existing observations of resonance patterns for K(40)-Rb(87). Interisotope resonance spectroscopy improves significantly our near-threshold model for scattering and bound-state calculations. Our analysis determines the number of bound states in singlet/triplet potentials and establishes precisely near threshold parameters for all K-Rb pairs of interest for experiments with both atoms and molecules. In addition, the model verifies the validity of the Born-Oppenheimer approximation at the present level of accuracy.

9 pages, 7 figures

References in corpus (23)

• Observation of Bose-Einstein Condensation of Molecules
• Strongly enhanced inelastic collisions in a Bose-Einstein condensate near Feshbach resonances
• Fermi-Bose quantum degenerate ^40 K - ^87 Rb mixture with attractive interaction
• Ultracold heteronuclear molecules in a 3D optical lattice
• Feshbach resonances in rubidium 87: Precision measurement and analysis
• Observation of Heteronuclear Feshbach Resonances in a Bose-Fermi Mixture
• Multiplet Structure of Feshbach Resonances in non-zero partial waves
• Resonant control of elastic collisions in an optically trapped Fermi gas of atoms
• 39-K Bose-Einstein condensate with tunable interactions
• Photoassociative Production and Trapping of Ultracold KRb Molecules
• Feshbach resonances in ultracold K(39)
• Tuning of heteronuclear interactions in a quantum-degenerate Fermi-Bose mixture
• High-precision calculations of van der Waals coefficients for heteronuclear alkali-metal dimers
• Feshbach spectroscopy of a K-Rb atomic mixture
• Observation of Heteronuclear Feshbach Molecules from a ${}^{85}$Rb - ${}^{87}$Rb gas
• Control of the interaction in a Fermi-Bose mixture
• Scattering Length Scaling Laws for Ultracold Three-Body Collisions
• The coupling of the X${}^1{\Sigma }^{+}$ and a${}^3{\Sigma }^{+}$ states of KRb
• Accurate relativistic many-body calculations of van der Waals coefficients C_8 and C_10 for alkali-metal dimers
• Adiabatic association of ultracold molecules via magnetic field tunable interactions
• Multichannel quantum-defect theory for slow atomic collisions
• Ab initio calculation of the KRb dipole moments
• KRb Feshbach Resonances: Modeling the interatomic potential

Cited by in corpus (48)

• Feshbach Resonances in Ultracold Gases
• Double species condensate with tunable interspecies interactions
• Observation of Quantum Droplets in a Heteronuclear Bosonic Mixture
• Observation of heteronuclear atomic Efimov resonances
• Matter-wave diffraction from a quasicrystalline optical lattice
• Tests of universal three-body physics in an ultracold Bose-Fermi mixture
• Tunable dual-species Bose-Einstein condensates of ${}^{39}$K and ${}^{87}$Rb
• Impurities as a quantum thermometer for a Bose-Einstein condensate
• Association of ultracold double-species bosonic molecules
• Coherent Interaction of a Single Fermion with a Small Bosonic Field
• Simulating dense QCD matter with ultracold atomic boson-fermion mixtures
• A dual-species Bose-Einstein condensate with attractive interspecies interactions
• Feshbach resonances in an ultracold ${}^7$Li and ${}^{87}$Rb mixture
• Contrasting the wide Feshbach resonances in ${}^6$Li and ${}^7$Li
• Universal three-body physics in ultracold KRb mixtures
• Quantum phase transition in Bose-Fermi mixtures
• Casimir forces and quantum friction from Ginzburg radiation in atomic BECs
• Radio frequency association of heteronuclear Feshbach molecules
• Atomic Josephson junction with two bosonic species
• Quantum Defect Theory for High Partial Wave Cold Collisions
• Observation of coherent quench dynamics in a metallic many-body state of fermionic atoms
• Dual-species Bose-Einstein condensate of 41K and 87Rb in a hybrid trap
• Feshbach resonances in ultracold atom-molecule collisions
• Deviations from Born-Oppenheimer mass scaling in spectroscopy and ultracold molecular physics
• Predicting scattering properties of ultracold atoms: adiabatic accumulated phase method and mass scaling
• An impurity in a heteronuclear two-component Bose mixture
• Phase Separation in two-Species Atomic Bose-Einstein Condensate with Interspecies Feshbach Resonance
• Broad Feshbach resonances in ultracold alkali-metal systems
• Isotopic shift of atom-dimer Efimov resonances in K-Rb mixtures: Critical effect of multichannel Feshbach physics
• Collisional and molecular spectroscopy in an ultracold Bose-Bose mixture
• Enhanced association and dissociation of heteronuclear Feshbach molecules in a microgravity environment
• Stability of low-dimensional multicomponent Bose gases
• Probing low-energy Lorentz violation from high-energy modified dispersion in dipolar Bose-Einstein condensates
• The quantum Rabi model in a superfluid Bose-Einstein condensate
• Controlling the interactions in a cold atom quantum impurity system
• Landau quantization effects in ultracold atom-ion collisions
• Dissipative Distillation of Supercritical Quantum Gases
• Universal Three-Body Parameter of Heavy-Heavy-Light systems with negative intraspecies scattering length
• Quantum Phase Transitions in Bosonic Heteronuclear Pairing Hamiltonians
• Using nanokelvin quantum thermometry to detect timelike Unruh effect in a Bose-Einstein condensate
• The rotor Jackiw-Rebbi model: a cold-atom approach to chiral symmetry restoration and quark confinement
• Production of dual species Bose-Einstein condensates of ${}^{39}$K and ${}^{87}$Rb
• Bose-Einstein condensation and density collapse in a weakly coupled boson-fermion mixture
• Quenched Magneto-association of Ultracold Feshbach Molecules
• Subluminal light pulse propagation in a Λ-type atom-molecule coupled system
• Number and spin densities in the ground state of a trapped mixture of two pseudospin-1/2 Bose gases with interspecies spin-exchange interaction
• Observation of high partial-wave Feshbach resonances in ${}^{39}$K Bose-Einstein condensates
• Control, competition and coexistence of effective magnetic orders by interactions in Bose-Einstein condensates with high-Q cavities