Double quantum dot between two superconducting leads

Mahn Soo Choi, C. Bruder, Daniel Loss

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

A double quantum dot coupled to two superconducting leads is studied in the Coulomb blockade regime. The double dot mediates an effective Josephson coupling between the two superconducting leads, which in turn induce an exchange coupling between the spin states of the dots. The Josephson current depends on the spins on the dots, while the spin exchange coupling can be tuned by the superconducting phase difference. This spin-dependent Josephson current can be used to probe directly the correlated spin states (singlet or triplets).

Original languageEnglish
Pages (from-to)162-164
Number of pages3
JournalPhysica C: Superconductivity and its Applications
Volume352
Issue number1-4
DOIs
Publication statusPublished - 2001 Apr
Externally publishedYes

Keywords

  • Entanglement
  • Josephson effect
  • Quantum dot

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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