Resonant Control of Interaction Between Different Electronic States

Abstract

We observe a magnetic Feshbach resonance in a collision between the ground and metastable states of two-electron atoms of ytterbium (Yb). We measure the on-site interaction of doubly-occupied sites of an atomic Mott insulator state in a three-dimensional optical lattice as a collisional frequency shift in a high-resolution laser spectroscopy. The observed spectra are well fitted by a simple theoretical formula, in which two particles with an s-wave contact interaction are confined in a harmonic trap. This analysis reveals a wide variation of the interaction with a resonance behavior around a magnetic field of about 1.1 Gauss for the energetically lowest magnetic sublevel of ${}^{170}$Yb, as well as around 360 mG for the energetically highest magnetic sublevel of ${}^{174}$Yb. The observed Feshbach resonance can only be induced by an anisotropic inter-atomic interaction. This novel scheme will open the door to a variety of study using two-electron atoms with tunable interaction.

5 pages, 5 figures

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Cited by in corpus (34)

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• Additional clock transitions in neutral ytterbium bring new possibilities for testing physics beyond the Standard Model
• Controlling interactions between highly-magnetic atoms with Feshbach resonances
• Ultracold Heteronuclear Mixture of Ground and Excited State Atoms
• Reservoir spectroscopy of 5s5p ${}^3$P${}_2$ - 5s$n$d ${}^3$D${}_{1,2,3}$ transitions in strontium
• Modeling the electronic structures of the ground and excited states of the ytterbium atom and the ytterbium dimer: A modern quantum chemistry perspective
• Feshbach-Resonance-Enhanced Coherent Atom-Molecule Conversion with Ultra-Narrow Photoassociation Resonance
• Controlling magnetic Feshbach resonances in polar open-shell molecules with non-resonant light
• A Three-Dimensional Optical Lattice of Ytterbium and Lithium Atomic Mixture
• Magnetic field dependent interactions in an ultracold Li-Yb(${}^3$P${}_2$) mixture
• 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
• Injection locking of a high power ultraviolet laser diode for laser cooling of ytterbium atoms
• The ${}^1{\mathrm{S}}_0$-${}^3{\mathrm{P}}_2$ magnetic quadrupole transition in neutral strontium
• Quantum chaos in ultracold collisions between Yb(${}^1$S${}_0$) and Yb(${}^3$P${}_2$)
• Three-body forces and Efimov physics in nuclei and atoms
• Relativistic many-body calculations of van der Waals coefficients for Yb-Li and Yb-Rb dimers
• 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
• Prospects of forming high-spin polar molecules from ultracold atoms
• The frequency of the ultranarrow ${}^1{\text{S}}_0-{}^3{\text{P}}_2$ transition in ${}^{87}\text{Sr}$
• Observation of slow relaxation due to Hilbert space fragmentation in strongly interacting Bose-Hubbard chains
• Reexamination of the ground state Born-Oppenheimer Yb${}_2$ potential
• Suppressing deleterious effects of spontaneous emission in creating bound states in cold atom continuum
• Orders-of-magnitude improvement in precision spectroscopy of an inner-shell orbital clock transition in neutral ytterbium
• A model study on atom-atom interactions with large scattering length in quasi-two dimensional traps
• Exploring the Strongly-Interacting Regime of Effective Multi-Body Interactions in a Trapped Ultracold Atom System
• Control, competition and coexistence of effective magnetic orders by interactions in Bose-Einstein condensates with high-Q cavities