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Selective control of conductance modes in multi-terminal Josephson junctions.
Graziano, Gino V; Gupta, Mohit; Pendharkar, Mihir; Dong, Jason T; Dempsey, Connor P; Palmstrøm, Chris; Pribiag, Vlad S.
Afiliação
  • Graziano GV; School of Physics and Astronomy, University of Minnesota, Minneapolis, MN, 55455, USA.
  • Gupta M; School of Physics and Astronomy, University of Minnesota, Minneapolis, MN, 55455, USA.
  • Pendharkar M; Electrical and Computer Engineering, University of California Santa Barbara, Santa Barbara, CA, 93106, USA.
  • Dong JT; Materials Science and Engineering, Stanford University, Stanford, CA, 94305, USA.
  • Dempsey CP; Materials Department, University of California Santa Barbara, Santa Barbara, CA, 93106, USA.
  • Palmstrøm C; Electrical and Computer Engineering, University of California Santa Barbara, Santa Barbara, CA, 93106, USA.
  • Pribiag VS; Electrical and Computer Engineering, University of California Santa Barbara, Santa Barbara, CA, 93106, USA.
Nat Commun ; 13(1): 5933, 2022 Oct 08.
Article em En | MEDLINE | ID: mdl-36209199
The Andreev bound state spectra of multi-terminal Josephson junctions form an artificial band structure, which is predicted to host tunable topological phases under certain conditions. However, the number of conductance modes between the terminals of a multi-terminal Josephson junction must be few in order for this spectrum to be experimentally accessible. In this work, we employ a quantum point contact geometry in three-terminal Josephson devices to demonstrate independent control of conductance modes between each pair of terminals and access to the single-mode regime coexistent with the presence of superconducting coupling. These results establish a full platform on which to realize tunable Andreev bound state spectra in multi-terminal Josephson junctions.

Texto completo: 1 Base de dados: MEDLINE Idioma: En Ano de publicação: 2022 Tipo de documento: Article

Texto completo: 1 Base de dados: MEDLINE Idioma: En Ano de publicação: 2022 Tipo de documento: Article