Process tomography of coherent state transfer from light polarization to electron spin polarization in a semiconductor

Takahiro Inagaki, Hideo Kosaka, Yasuyoshi Mitsumori, Keiichi Edamatsu

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

We performed process tomography of a coherent state transfer from light polarization into electron spin polarization in a semiconductor quantum well. The density matrix of the generated electron spin state was reconstructed by a three-dimensional tomographic Kerr rotation measurement so that we could quantitatively evaluate the transfer process. We found that the process fidelity of the state transfer was 81% and clarified that the phase-flip error caused by mixing with another Zeeman sublevel at the hole state was the major contributor to fidelity degradation.

Original languageEnglish
Article number085311
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume89
Issue number8
DOIs
Publication statusPublished - 2014 Feb 24

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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