Quantum degenerate Bose-Fermi mixture of chemically different atomic species with widely tunable interactions

Abstract

We have created a quantum degenerate Bose-Fermi mixture of 23Na and 40K with widely tunable interactions via broad interspecies Feshbach resonances. Twenty Feshbach resonances between 23Na and 40K were identified. The large and negative triplet background scattering length between 23Na and 40K causes a sharp enhancement of the fermion density in the presence of a Bose condensate. As explained via the asymptotic bound-state model (ABM), this strong background scattering leads to a series of wide Feshbach resonances observed at low magnetic fields. Our work opens up the prospect to create chemically stable, fermionic ground state molecules of 23Na-40K where strong, long-range dipolar interactions will set the dominant energy scale.

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Cited by in corpus (89)

• Ultracold Dipolar Gas of Fermionic ${}^{23}$Na${}^{40}$K Molecules in their Absolute Ground State
• A Quantum Gas Microscope for Fermionic Atoms
• Field-theoretical study of the Bose polaron
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• Bose polarons near quantum criticality
• Observation of magnetically tunable Feshbach resonances in ultracold ${}^{23}$Na${}^{40}$K+${}^{40}$K collisions
• Bipolarons in a Bose-Einstein Condensate
• Variational study of polarons in Bose-Einstein condensates
• Second-Scale Nuclear Spin Coherence Time of Trapped Ultracold ${}^{23}$Na${}^{40}$K Molecules
• Quantum degenerate mixtures of strontium and rubidium atoms
• Renormalization group approach to the Fröhlich polaron model: application to impurity-BEC problem
• Cooling and thermometry of atomic Fermi gases
• Modeling the adiabatic creation of ultracold, polar ${}^{23}\mathrm{N}{\mathrm{a}}^{40}\mathrm{K}$ molecules
• Production of quantum degenerate strontium gases: Larger, better, faster, colder
• Observation of interspecies Li-Cs Feshbach resonances
• A double species ${}^{23}$Na and ${}^{87}$Rb Bose-Einstein condensate with tunable miscibility via an interspecies Feshbach resonance
• Realizing a Kondo-correlated state with ultracold atoms
• Collisions of ultracold molecules in bright and dark optical dipole traps
• Coherent Microwave Control of Ultracold ${}^{23}$Na${}^{40}$K Molecules
• Observation of a Degenerate Fermi Gas Trapped by a Bose-Einstein Condensate
• Liquid and crystal phase of dipolar fermions in two dimensions
• Induced $p$-wave pairing in Bose-Fermi mixtures
• Controlled state-to-state atom-exchange reaction in an ultracold atom-dimer mixture
• Polaronic properties of an impurity in a Bose-Einstein condensate in reduced dimensions
• Bipolarons and multi-polarons consisting of impurity atoms in a Bose-Einstein condensate
• Observation of Feshbach resonances between ultracold Na and Rb atoms
• Simulating quantum magnets with symmetric top molecules
• Evidence for association of triatomic molecule in ultracold ${}^{23}$Na${}^{40}$K and ${}^{40}$K mixture
• Induced interactions in a superfluid Bose-Fermi mixture
• Study of the inter-species interactions in an ultracold dipolar mixture
• Feshbach spectroscopy and dual-species Bose-Einstein condensation of ${}^{23}\mathrm{Na}-$${}^{39}\mathrm{K}$ mixtures
• Two-Photon Pathway to Ultracold Ground State Molecules of ${}^{23}$Na${}^{40}$K
• Mass imbalance effect in resonant Bose-Fermi mixtures
• Mixed bubbles in Bose-Bose mixtures
• Magnetic Feshbach resonances in collisions of ${}^{23}$Na${}^{40}$K with ${}^{40}$K
• Observation of interference between resonant and detuned STIRAP in the adiabatic creation of ${}^{23}$Na${}^{40}$K molecules
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• From the Cooper problem to canted supersolids in Bose-Fermi mixtures
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• Overlapping Bose-Einstein Condensates of ${}^{23}$Na and ${}^{133}$Cs
• Condensed phase of Bose-Fermi mixtures with a pairing interaction
• Analyzing Feshbach resonances -- A ${}^6$Li -${}^{133}$Cs case study
• Singlet Pathway to the Ground State of Ultracold Polar Molecules
• Feshbach resonances and weakly bound molecular states of boson-boson and boson-fermion NaK pairs
• Broad Feshbach resonances in ultracold alkali-metal systems
• Feshbach Loss Spectroscopy in an Ultracold ${}^{23}$Na and ${}^{40}$K Mixture
• The Molecular Hubbard Hamiltonian: Field Regimes and Molecular Species
• Dipolar fermions in a two-dimensional lattice at non-zero temperature
• Single-particle spectral functions in the normal phase of a strongly-attractive Bose-Fermi mixture
• Feshbach resonances in ${}^{23}\mathrm{Na}+$${}^{39}\mathrm{K}$ mixtures and refined molecular potentials for the NaK molecule
• Bose-Fermi Pairs in a Mixture and the Luttinger Theorem within a Nozieres-Schmitt-Rink like Approach
• Investigation of Feshbach Resonances in ultra-cold 40 K spin mixtures
• Light-induced topological superconductivity in transition metal dichalcogenide monolayers
• Multi-channel modeling and two photon coherent transfer paths in NaK
• Collective flow of fermionic impurities immersed in a Bose-Einstein Condensate
• Strongly interacting Bose-Fermi mixture: mediated interaction, phase diagram and sound propagation
• Exotic Superconductivity Through Bosons in a Dynamical Cluster Approximation
• Dissipative Effects on the Superfluid to Insulator Transition in Mixed-dimensional Optical Lattices
• Photoionization loss in simultaneous magneto-optical trapping of Rb and Sr
• Bose-Fermi mixtures in the molecular limit
• Doublon dynamics of Bose-Fermi mixtures in optical lattices
• Fermion pairing in mixed-dimensional atomic mixtures
• Thermodynamic stability, compressibility matrix, and effects of mediated interactions in a strongly-interacting Bose-Fermi mixture
• Single-Particle properties of a strongly-interacting Bose-Fermi mixture with mass and population imbalance
• Comprehensive classification for Bose-Fermi mixtures
• Stochastic dynamics of a few sodium atoms in a cold potassium cloud
• Electronic properties and polaronic dynamics of semi-Dirac system within ladder approximation
• An ultracold, optically trapped mixture of {87}Rb and metastable {4}He atoms
• Orbital physics of polar Fermi molecules
• Second root of dilute Bose-Fermi mixtures
• Heat transfer through dipolar coupling: Sympathetic cooling without contact
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• Precision Measurement of Spin-Dependent Dipolar Splitting in ${}^6$Li p-Wave Feshbach Resonances
• Superfluid density reduction and spin-imbalanced pairing in a fermionic superfluid due to dynamical boson exchange
• Correlations and synchronization in a Bose-Fermi mixture
• Polaronic neutron in dilute alpha matter: A $p$-wave Bose polaron
• Mechanical stability of resonant Bose-Fermi mixtures
• Exploring phonon-like interactions in one-dimensional Bose-Fermi mixtures
• Energy of strongly attractive Bose-Fermi mixtures
• Sub-Doppler laser cooling and magnetic trapping of natural-abundance fermionic potassium
• Universal Efimov spectra and fermionic doublets in highly mass-imbalanced cold-atom mixtures with van der Waals and dipole interactions
• Engineering Majorana Kramers Pairs In Synthetic High Spin Chern Insulators
• Ground-state and Excitation spectra of Bose-Fermi Mixtures in a Three-Dimensional Optical Lattice
• Preparation of quasi-two-dimensional Bose mixture of ultracold ${}^{23}$Na and ${}^{87}$Rb atoms
• High-flux cold lithium-6 and rubidium-87 atoms from compact two-dimensional magneto-optical traps