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Journal of Low Temperature Physics

, Volume 45, Issue 1–2, pp 37–47 | Cite as

Collective quantum tunneling, ultimate sensitivity of the AC SQUID, and all that

  • J. Kurkijärvi
Article

Abstract

The effect of quantum tunneling of the phase variable in SQUIDs is studied as a source of zero-temperature noise in the system. It is concluded that quantum tunneling plays no role in the ultimate uncertainty principle limitation of SQUID resolution. A simple expression is derived for the latter in practical SQUIDs.

Keywords

Magnetic Material Phase Variable Simple Expression Uncertainty Principle Quantum Tunneling 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Plenum Publishing Corporation 1981

Authors and Affiliations

  • J. Kurkijärvi
    • 1
  1. 1.School of Mathematical and Physical SciencesUniversity of SussexBrightonEngland

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