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Lancet (London, England), vol.397, no.10272, pp.387-397, 2021 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 397 Issue: 10272
  • Publication Date: 2021
  • Doi Number: 10.1016/s0140-6736(21)00001-5
  • Journal Name: Lancet (London, England)
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, PASCAL, Aquatic Science & Fisheries Abstracts (ASFA), BIOSIS, CAB Abstracts, EMBASE, Food Science & Technology Abstracts, MEDLINE, Psycinfo, Veterinary Science Database
  • Page Numbers: pp.387-397
  • Hacettepe University Affiliated: Yes

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.