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

Author

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

Author_Institution

Lab. de Photonique et de Nanostruct., Marcoussis, France

fYear

2015

fDate

10-15 May 2015

Firstpage

1

Lastpage

2

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.

Keywords

light polarisation; optical rotation; quantum dots; quantum entanglement; quantum optics; cavity-QED devices; cavity-based spin-photon interface; giant polarization rotation; macroscopic rotation; photon polarization; quantum dot-pillar cavity system; quantum entanglement; quantum measurements; quantum optics; single hole spin; spin-photon interaction; Cavity resonators; Optical device fabrication; Optical polarization; Optical pumping; Photonics; Quantum dots;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics (CLEO), 2015 Conference on

Conference_Location

San Jose, CA

Type

conf

Filename

7183019