Probing Cooper pairs with Franson interferometry

Vittorio Giovannetti, Kazuya Yuasa

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

A setup based on the Franson optical interferometer is analyzed, which allows us to detect the coherence properties of Cooper pairs emerging via tunneling from a superconductor in contact with two one-dimensional channels. By tuning the system parameters we show that both the internal coherence of the emitted Cooper pairs, which is proportional to Pippard's length, and the de Broglie wavelength of their center-of-mass motion can be measured via current-current correlation measurements.

Original languageEnglish
Article number115429
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume86
Issue number11
DOIs
Publication statusPublished - 2012 Sep 19

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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