Observation of heteronuclear atomic Efimov resonances

Abstract

The Efimov effect represents a cornerstone in few-body physics. Building on the recent experimental observation with ultracold atoms, we report the first experimental signature of Efimov physics in a heteronuclear system. A mixture of ${}^{41}$K and ${}^{87}$Rb atoms was cooled to few hundred nanoKelvins and stored in an optical dipole trap. Exploiting a broad interspecies Feshbach resonance, the losses due to three-body collisions were studied as a function of the interspecies scattering length. We observe an enhancement of the three-body collisions for three distinct values of the interspecies scattering lengths, both positive and negative. We attribute the two features at negative scattering length to the existence of two kind of Efimov trimers, namely KKRb and KRbRb.

4 pages, 4 figures

References in corpus (17)

• Universality in Few-body Systems with Large Scattering Length
• Evidence for Efimov quantum states in an ultracold gas of cesium atoms
• Double species condensate with tunable interspecies interactions
• Collisional stability of a three-component degenerate Fermi gas
• Three-body recombination in a three-state Fermi gas with widely tunable interactions
• Three-body recombination at large scattering lengths in an ultracold atomic gas
• Observation of an Efimov-like resonance in ultracold atom-dimer scattering
• Self-consistent model of ultracold atomic collisions and Feshbach resonances in tight harmonic traps
• Feshbach spectroscopy of a K-Rb atomic mixture
• Limits on Universality in Ultracold Three-Boson Recombination
• Association of ultracold double-species bosonic molecules
• Feshbach resonances in mixtures of ultracold ${}^6$Li and ${}^{87}$Rb gases
• Accurate near-threshold model for ultracold KRb dimers from interisotope Feshbach spectroscopy
• Mass Dependence of Ultracold Three-Body Collision Rates
• Efimov states and their Fano resonances in a neutron-rich nucleus
• KRb Feshbach Resonances: Modeling the interatomic potential
• Collisional and molecular spectroscopy in an ultracold Bose-Bose mixture

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