Giant polarization rotation induced by a single spin: A cavity-based spin-photon interface

  • J. Demory
  • , C. Arnold
  • , V. Loo
  • , A. Lemaitre
  • , I. Sagnes
  • , M. Glazov
  • , O. Krebs
  • , P. Voisin
  • , P. Senellart
  • , L. Lanco

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Entangling a single spin to the polarization of a single incoming photon, generated by an external source, would open new paradigms in quantum optics: this relies on the possibility that a single spin induces a macroscopic rotation of a photon polarization. Up to now, however, the observed polarization rotations were limited to a few 10-3 degrees. Here we report the amplification by three orders of magnitude of the spin-photon interaction, using a single hole spin in a quantum dot-pillar cavity system. A polarization rotation by ±6° is obtained when the spin is optically initialized in either the up or down state. We finally show how quantum measurements and quantum entanglement can be implemented with realistic cavity-QED devices.

Original languageEnglish
Title of host publication2015 Conference on Lasers and Electro-Optics, CLEO 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781557529688
Publication statusPublished - 10 Aug 2015
EventConference on Lasers and Electro-Optics, CLEO 2015 - San Jose, United States
Duration: 10 May 201515 May 2015

Publication series

NameConference on Lasers and Electro-Optics Europe - Technical Digest
Volume2015-August

Conference

ConferenceConference on Lasers and Electro-Optics, CLEO 2015
Country/TerritoryUnited States
CitySan Jose
Period10/05/1515/05/15

Keywords

  • Cavity resonators
  • Optical device fabrication
  • Optical polarization
  • Optical pumping
  • Photonics
  • Quantum dots

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