Measurement of the trapping lifetime close to a cold metallic surface on a cryogenic atom-chip

Abstract

We have measured the trapping lifetime of magnetically trapped atoms in a cryogenic atom-chip experiment. An ultracold atomic cloud is kept at a fixed distance from a thin gold layer deposited on top of a superconducting trapping wire. The lifetime is studied as a function of the distances to the surface and to the wire. Different regimes are observed, where loss rate is determined either by the technical current noise in the wire or the Johnson-Nyquist noise in the metallic gold layer, in good agreement with theoretical predictions. Far from the surface, we observe exceptionally long trapping times for an atom-chip, in the 10-minutes range.

arXiv comment5 pages

References in corpus (16)

• Strong atom-field coupling for Bose-Einstein condensates in an optical cavity on a chip
• Impact of the Casimir-Polder Potential and Johnson Noise on Bose-Einstein Condensate Stability near Surfaces
• Loss and heating of particles in small and noisy traps
• Bose-Einstein condensate coupled to a nanomechanical resonator on an atom chip
• Thermally induced spin flips above an atom chip
• Realization of a superconducting atom chip
• Persistent Supercurrent Atom Chip
• Thermal spin flips in atom chips
• Coherence-preserving trap architecture for long-term control of giant Rydberg atoms
• Atomic spin decoherence near conducting and superconducting films
• Bose-Einstein condensation on a superconducting atom chip
• Spin flip lifetimes in superconducting atom chips: BCS versus Eliashberg theory
• Magnetostatic field noise near metallic surfaces
• Reduction of Magnetic Noise in Atom Chips by Material Optimization
• Impact of the Meissner effect on magnetic micro traps for neutral atoms near superconducting thin films
• Spontaneous Emission Near Superconducting Bodies

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