All-Optical Formation of Quantum Degenerate Mixtures

Abstract

We report the realization of quantum degenerate mixed gases of ytterbium (Yb) isotopes using all-optical methods. We have succeeded in cooling attractively interacting 176Yb atoms via sympathetic cooling down to below the Bose-Einstein transition temperature, coexisting with a stable condensate of 174Yb atoms with a repulsive interaction. We have observed a rapid atom loss in 176Yb atoms after cooling down below the transition temperature, which indicates the collapse of a 176Yb condensate. The sympathetic cooling technique has been applied to cool a 173Yb-174Yb Fermi-Bose mixture to the quantum degenerate regime.

4 pages, 3 figures

References in corpus (3)

• Bose-Einstein condensation of chromium
• Tuning the scattering length with an optically induced Feshbach resonance
• Bose-Einstein Condensation of an Ytterbium Isotope

Cited by in corpus (4)

• Ultracold Gases of Ytterbium: Ferromagnetism and Mott States in an SU(6) Fermi System
• A Mott Insulator of Ultracold Alkaline-Earth-Like Atoms
• Binding between two-component bosons in one dimension
• Two-dimensional boson-fermion mixtures