Proposal of a full Bell state analyzer for spin qubits in a double quantum dot

Nobuhiko Yokoshi, Hiroshi Imamura, Hideo Kosaka

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

We propose a scheme for full Bell state measurement of spin qubits in a double quantum dot. Our scheme consists of Pauli spin-blockade measurements and biaxial electron-spin resonance. In order to eliminate the average of the Zeeman fields, the double quantum dot is designed so that the Landé g -factors of first and second dots satisfy g1 =- g2 with the use of g -factor engineering. Thus, we can swap one of the three spin-triplet states for the spin-singlet state without disturbing the other states. Our study shows that the sequential spin-to-charge conversions enable us to implement the full Bell state measurement of electron-spin qubits.

Original languageEnglish
Article number161305
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume81
Issue number16
DOIs
Publication statusPublished - 2010 Apr 12

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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