Heating rate and spin flip lifetime due to near-field noise in layered superconducting atom chips

R. Fermani, T. Müller, B. Zhang, M. J. Lim, R. Dumke

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13 Scopus citations

Abstract

We investigate theoretically the heating rate and spin flip lifetimes due to near-field noise for atoms trapped close to layered superconducting structures with the superconductor in the Meissner state. In particular, we compare the case of a gold layer deposited above a superconductor with the case of a bare superconductor. We study a niobium-based and a YBa2Cu 3O7 - x (YBCO)-based chip. For both niobium and YBCO chips at a temperature of 4.2 K, we find that the deposition of the gold layer can have a significant impact on the heating rate and spin flip lifetime, as a result of the increase of the near-field noise. At a chip temperature of 77 K, this effect is less pronounced for the YBCO chip.

Original languageEnglish (US)
Article number095002
JournalJournal of Physics B: Atomic, Molecular and Optical Physics
Volume43
Issue number9
DOIs
StatePublished - 2010

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics

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