Ultracold Heteronuclear Mixture of Ground and Excited State Atoms

Abstract

We report on the realization of an ultracold mixture of lithium atoms in the ground state and ytterbium atoms in the excited metastable 3P2 state. Such a mixture can support broad magnetic Feshbach resonances which may be utilized for the production of ultracold molecules with an electronic spin degree of freedom, as well as novel Efimov trimers. We investigate the interaction properties of the mixture in the presence of an external magnetic field and find an upper limit for the background interspecies two-body inelastic decay coefficient of K'2 < 3e-12 cm^3/s for the 3P2 m_J=-1 substate. We calculate the dynamic polarizabilities of the Yb 3P2 magnetic substates for a range of wavelengths, and find good agreement with our measurements at 1064nm. Our calculations also allow the identification of magic frequencies where Yb ground and metastable states are identically trapped and the determination of the interspecies van der Waals coefficients.

5 pages, 4 figures, supplemental material

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• Quantum degenerate mixtures of strontium and rubidium atoms
• Controlling Polar Molecules in Optical Lattices
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Cited by in corpus (32)

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• Accurate Determination of the Dynamical Polarizability of Dysprosium
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• Photoassociative production of ultracold heteronuclear YbLi* molecules
• Controlling magnetic Feshbach resonances in polar open-shell molecules with non-resonant light
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• Magnetic field dependent interactions in an ultracold Li-Yb(${}^3$P${}_2$) mixture
• A versatile dual-species Zeeman slower for caesium and ytterbium
• Multipolar Kondo Effect in ${}^1$S${}_0$-${}^3$P${}_2$ Mixture of ${}^{173}$Yb Atoms
• Ab initio properties of the ground-state polar and paramagnetic europium-alkali-metal-atom and europium-alkaline-earth-metal-atom molecules
• Droplet Arrays in Doubly-Dipolar Bose-Einstein condensates
• Correlated dynamics of fermionic impurities induced by the counterflow of an ensemble of fermions
• A New Clock Transition with the Highest Sensitivity to $\alpha$ Variation and Simultaneous Magic Trapping Conditions with Other Clock Transitions in Yb
• A 3-photon process for producing a degenerate gas of metastable alkaline-earth atoms
• Ultracold rare-earth magnetic atoms with an electric dipole moment
• Magnetically tunable Feshbach resonances in ultracold gases of europium atoms and mixtures of europium and alkali-metal atoms
• Collisional stability of localized Yb(${}^3{\mathrm{P}}_2$) atoms immersed in a Fermi sea of Li
• Magnetic control of ultra-cold ${}^6$Li and ${}^{174}$Yb(${}^3{P}_2$) atom mixtures with Feshbach resonances
• The frequency of the ultranarrow ${}^1{\text{S}}_0-{}^3{\text{P}}_2$ transition in ${}^{87}\text{Sr}$
• An ultracold, optically trapped mixture of {87}Rb and metastable {4}He atoms
• Feshbach resonances and molecule formation in ultracold mixtures of Rb and Yb(${}^3$P) atoms
• Bound-state spectrum of an impurity in a quantum vortex
• BCS-BEC crossover of the strongly interacting ${}^6$Li-${}^{40}$K mixture
• Quantum Degenerate Mixtures of Cs and Yb