Polarization transfer from photon to electron spin in g factor engineered quantum wells

Hideo Kosaka, Y. Mitsumori, Y. Rikitake, H. Imamura

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

The authors demonstrate polarization transfer from a photon to an electron spin intermediated by a light-hole exciton in a GaAsAlGaAs quantum well, which has an engineered electron g factor of less than 0.01 for an in-plane magnetic field. Negative spin polarization was clearly observed at the selective excitation of the light-hole exciton from two-color time-resolved Kerr rotation. This demonstration is a necessary step towards demonstrating coherence transfer from a photon to an electron spin, which is necessary for building a quantum repeater used for long distance quantum communications.

Original languageEnglish
Article number113511
JournalApplied Physics Letters
Volume90
Issue number11
DOIs
Publication statusPublished - 2007 Mar 23
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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