Fermi-Bose and Bose-Bose K-Rb Quantum Degenerate Mixtures
نویسندگان
چکیده
We describe the properties of mixtures composed by potassium and rubidium atoms, simultaneously trapped in a magnetic potential. Potassium isotopes are cooled down to quantum degeneracy by means of sympathetic cooling with rubidium [1]. We can produce both a two-species Bose-Einstein condensate [2] mixing together Rb and K, and a degenerate system composed by a Fermi gas of K atoms and a Bose-Einstein condensate of Rb [3]. In both cases, interactions play relevant roles: notably, the strong KRb interaction is able to overwhelm the mutual repulsion between fermions, eventually leading to the collapse of a degenerate Fermi gas [4].
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