Variable transformer for controllable flux coupling (Articolo in rivista)

Type
Label
  • Variable transformer for controllable flux coupling (Articolo in rivista) (literal)
Anno
  • 2005-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1063/1.1899746 (literal)
Alternative label
  • M. G. Castellano; F. Chiarello; R. Leoni; D. Simeone; G. Torrioli; C. Cosmelli; P. Carelli (2005)
    Variable transformer for controllable flux coupling
    in Applied physics letters
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • M. G. Castellano; F. Chiarello; R. Leoni; D. Simeone; G. Torrioli; C. Cosmelli; P. Carelli (literal)
Pagina inizio
  • 152504 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 86 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 15 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • 1Istituto di Fotonica e Nanotecnologie, CNR, Via Cineto Romano 42, 00156 Roma, Italy 2INFN and Universita' di Roma La Sapienza, p. le Aldo Moro 2, 00185 Roma, Italy 3INFM and Università dell'Aquila, Monteluco di Roio, 67040 L'Aquila, Italy (literal)
Titolo
  • Variable transformer for controllable flux coupling (literal)
Abstract
  • We. discuss and demonstrate a prototype of superconducting transformer with a flux transfer function that can be varied in a wide range, by acting on a control parameter. The device is realized by inserting a small hysteretic superconducting quantum interference device (dc-SQUID) with unshunted junctions, working as a Josephson junction with flux-controlled critical current, parallel to a superconducting transformer; by varying the magnetic flux coupled to the dc-SQUID, the transfer function for the flux coupled. to the transformer can be varied. This feature can prove particularly appealing in the field of quantum computing, where it could be exploited to achieve a controllable magnetic coupling among flux-based qubits. Measurements carried out on a prototype at,4.2 K show a reduction factor of about 30 between the \"on\" and the \"off\" states. We discuss the system characteristics and the experimental results. (literal)
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