Photon-induced vortex-antivortex pair creation in superconducting films

J. P. Walko, S. V. Rao, D. J. Van Harlingen

Research output: Contribution to journalArticlepeer-review


We have used a DC SQUID (superconducting quantum interference device) gradiometer to study vortex-antivortex pair creation in both two-dimensional superconducting films and Josephson junction arrays in the presence of 850 nm light irradiation. Specifically the experiments aim to distinguish between the formation of vortex-antivortex pairs by single-photon absorption and by thermal activation. A major objective for this experiment is to investigate the possibility of using vortex-antivortex pair creation and subsequent detection as the basis for a photon detector.

Original languageEnglish (US)
Article number004
Pages (from-to)246-248
Number of pages3
JournalSuperconductor Science and Technology
Issue number5
StatePublished - 1994

ASJC Scopus subject areas

  • Ceramics and Composites
  • Condensed Matter Physics
  • Metals and Alloys
  • Electrical and Electronic Engineering
  • Materials Chemistry


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