Trapping of ultra cold atoms in a 3He/4He dilution refrigerator

Abstract

We describe the preparation of ultra cold atomic clouds in a dilution refrigerator. The closed cycle 3He/4He cryostat was custom made to provide optical access for laser cooling, optical manipulation and detection of atoms. We show that the cryostat meets the requirements for cold atom experiments, specifically in terms of operating a magneto-optical trap, magnetic traps and magnetic transport under ultra high vacuum conditions. The presented system is a step towards the creation of a quantum hybrid system combining ultra cold atoms and solid state quantum devices.

6 pages, 6 figures

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• All-optical measurement of Rydberg state lifetimes
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• A millikelvin all-fiber cavity optomechanical apparatus for merging with ultra-cold atoms in a hybrid quantum system
• Trapping ultracold gases near cryogenic materials with rapid reconfigurability
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• A superconducting on-chip microwave cavity for tunable hybrid systems with optically trapped Rydberg atoms