Superconducting phase qubit based on the Josephson oscillator with strong anharmonicity (Articolo in rivista)

Type
Label
  • Superconducting phase qubit based on the Josephson oscillator with strong anharmonicity (Articolo in rivista) (literal)
Anno
  • 2009-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1103/PhysRevB.80.214535 (literal)
Alternative label
  • A. B. Zorin 1; F. Chiarello 2 (2009)
    Superconducting phase qubit based on the Josephson oscillator with strong anharmonicity
    in Physical review. B, Condensed matter and materials physics
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • A. B. Zorin 1; F. Chiarello 2 (literal)
Pagina inizio
  • 214535-1 (literal)
Pagina fine
  • 214535-5 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 80 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 5 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 21 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • 1 Physikalisch-Technische Bundesanstalt, Bundesallee 100, D-38116 Braunschweig, Germany 2 Istituto di Fotonica e Nanotecnologie, CNR, via Cineto Romano 42, I-00156 Rome, Italy (literal)
Titolo
  • Superconducting phase qubit based on the Josephson oscillator with strong anharmonicity (literal)
Abstract
  • We propose a superconducting phase qubit on the basis of the radio-frequency superconducting quantum interference device with the screening parameter value ?L?(2?/?0)LIc?1, biased by a half-flux quantum ?e=?0/2. Significant anharmonicity (>30%) can be achieved in this system due to the interplay of the cosine Josephson potential and the parabolic magnetic energy potential that ultimately leads to the quartic polynomial shape of the well. The two lowest eigenstates in this global minimum perfectly suit for the qubit which is insensitive to the charge variable, biased in the optimal point and allows an efficient dispersive readout. Moreover, the transition frequency in this qubit can be tuned within an appreciable range allowing variable qubit-qubit coupling. (literal)
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