An ultracold, optically trapped mixture of {87}Rb and metastable {4}He atoms

Abstract

We report on the realization of an ultracold (<25~muK) mixture of rubidium ({87}Rb) and metastable triplet helium ({4}He) in an optical dipole trap. Our scheme involves laser cooling in a dual-species magneto-optical trap, simultaneous MW- and RF-induced forced evaporative cooling in a quadrupole magnetic trap, and transfer to a single-beam optical dipole trap. We observe long trapping lifetimes for the doubly spin-stretched spin-state mixture and measure much shorter lifetimes for other spin-state combinations. We discuss prospects for realizing quantum degenerate mixtures of alkali-metal and metastable helium atoms.

9 pages

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Cited by in corpus (5)

• Two-photon photoassociation spectroscopy of CsYb: ground-state interaction potential and interspecies scattering lengths
• Production of ultracold Cs*Yb molecules by photoassociation
• Interspecies thermalization in an ultracold mixture of Cs and Yb in an optical trap
• Spin-state-controlled chemi-ionization reactions between metastable helium atoms and ground-state lithium atoms
• Quantum Degenerate Mixtures of Cs and Yb