Current-induced entanglement of nuclear spins in quantum dots

Mikio Eto, Takashi Ashiwa, Mikio Murata

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

We propose an entanglement mechanism of nuclear spins in quantum dots driven by the electric current accompanied by the spin flip. This situation is relevant to a leakage current in spin-blocked regions where electrons cannot be transported unless their spins are flipped. The current gradually increases the components of larger total spin of nuclei. This correlation among the nuclear spins markedly enhances the spin-flip rate of electrons and hence the leakage current. The enhancement of the current is observable when the residence time of electrons in the quantum dots is shorter than the dephasing time T 2* of nuclear spins.

Original languageEnglish
Pages (from-to)307-310
Number of pages4
JournalJournal of the Physical Society of Japan
Volume73
Issue number2
DOIs
Publication statusPublished - 2004 Feb 1

Keywords

  • Dephasing
  • Dicke effect
  • Entanglement
  • Hyperfine interaction
  • Nuclear spins
  • Quantum dot
  • Spin blockade
  • Superradiance

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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