Crossed Andreev reflection in quantum wires with strong spin-orbit interaction

Koji Sato, Daniel Loss, Yaroslav Tserkovnyak

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)

Abstract

We theoretically study tunneling of Cooper pairs from an s-wave superconductor into two semiconductor quantum wires with strong spin-orbit interaction under magnetic field, which approximate helical Luttinger liquids. The entanglement of electrons within a Cooper pair can be detected at low temperatures by the electric current cross correlations in the wires. By controlling the relative orientation of the wires, either lithographically or mechanically, on the substrate, these current correlations can be tuned, as dictated by the initial spin entanglement. This proposal of a spin-to-charge readout of quantum correlations is alternative to a recently proposed utilization of the quantum spin Hall insulator.

Original languageEnglish
Article number235433
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume85
Issue number23
DOIs
Publication statusPublished - 2012 Jun 15

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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