Double Degenerate Bose-Fermi Mixture of Strontium and Lithium

Abstract

We report on the attainment of a degenerate Fermi gas of ${}^6\mathrm{Li}$ in contact with a Bose-Einstein condensate (BEC) of ${}^{84}$Sr. A degeneracy of $T/T_F=0.33(3)$ is observed with $1.6\times 10^5$ ${}^6$Li atoms in the two lowest energy hyperfine states together with an almost pure BEC of $3.1\times 10^5$ ${}^{84}$Sr atoms. The elastic s-wave scattering length between ${}^6$Li and ${}^{84}$Sr is estimated to be $|a_{{}^6\mathrm{Li}-{}^{84}\mathrm{Sr}}|=(7.1_{-1.7}^{+2.6})a_0$ ($a_0$ being the Bohr radius) from measured interspecies thermalization rates in an optical dipole trap.

arXiv comment8 pages, 6 figures

References in corpus (42)

• Many-Body Physics with Ultracold Gases
• Quantum computation with trapped polar molecules
• Cold and Ultracold Molecules: Science, Technology, and Applications
• A toolbox for lattice spin models with polar molecules
• Quantum-State Controlled Chemical Reactions of Ultracold KRb Molecules
• Formation of ultracold polar molecules in the rovibrational ground state
• Optical Production of Ultracold Polar Molecules
• Hybrid Quantum Processors: molecular ensembles as quantum memory for solid state circuits
• Bose-Einstein Condensation of Strontium
• Observation of heteronuclear atomic Efimov resonances
• Direct observation of bimolecular reactions of ultracold KRb molecules
• Observation of Efimov Resonances in a Mixture with Extreme Mass Imbalance
• Geometric scaling of Efimov states in a ${}^6\text{Li}$-${}^{133}\text{Cs}$ mixture
• Quantum degenerate mixtures of alkali and alkaline-earth-like atoms
• Bose-Einstein condensation of alkaline earth atoms: ${}^{40}${Ca}
• Quantum degenerate mixtures of strontium and rubidium atoms
• Double-degenerate Bose-Fermi mixture of strontium
• Collisional Stability of 40K Immersed in a Strongly Interacting Fermi Gas of 6Li
• The ground state of the polar alkali-Strontium molecules: potential energy curve and permanent dipole moment
• Efficient all-optical production of large ${}^6$Li quantum gases using D${}_1$ gray-molasses cooling
• Observation of Feshbach resonances between alkali and closed-shell atoms
• Atom-dimer scattering and long-lived trimers in fermionic mixtures
• Hydrodynamic Expansion of a Strongly Interacting Fermi-Fermi Mixture
• Quantum Degenerate Mixture of Ytterbium and Lithium Atoms
• Magnetically tunable Feshbach resonances in ultracold Li-Yb mixtures
• External field control of collective spin excitations in an optical lattice of ${}^2\Sigma$ molecules
• Heavy-Light Fermion Mixtures at Unitarity
• Crystalline phase of strongly interacting Fermi mixtures
• Mass Dependence of Ultracold Three-Body Collision Rates
• Resonant pairing between Fermions with unequal masses
• Electron EDM searches based on alkali or alkaline earth bearing molecules
• Degenerate Bose-Fermi mixtures of rubidium and ytterbium
• Ab initio properties of Li-Group-II molecules for ultracold matter studies
• Feshbach resonances in $p$-wave three-body recombination within Fermi-Fermi mixtures of open-shell ${}^6$Li and closed-shell ${}^{173}$Yb atoms
• Production of ultracold Cs*Yb molecules by photoassociation
• Prospects for ultracold polar and magnetic chromium-closed-shell-atom molecules
• BCS-BEC crossover with unequal mass fermions
• Self-localization of a small number of Bose particles in a superfluid Fermi system
• Photoionization loss in simultaneous magneto-optical trapping of Rb and Sr
• Laser and Fourier transform spectroscopy of ${}^7$Li${}^{88}$Sr
• Study of dipole moments of LiSr and KRb molecules by quantum Monte Carlo methods
• Vortex core states in superfluid Fermi-Fermi mixtures with unequal masses

Cited by in corpus (6)

• Diatomic molecules of alkali-metal and alkaline-earth-metal atoms: interaction potentials, dipole moments, and polarizabilities
• Polarizing the Medium: Fermion-Mediated Interactions between Bosons
• Boson-fermion pairing and condensation in two-dimensional Bose-Fermi mixtures
• Dissipative preparation of a Floquet topological insulator in an optical lattice via bath engineering
• Mechanical stability of resonant Bose-Fermi mixtures
• Quantum Degenerate Mixtures of Cs and Yb