Electron spin coherence in singly charged (In,Ga)As/GaAs quantum dots

A. Greilich, R. Oulton, E. A. Zhukov, I. A. Yugova, D. R. Yakovlev, M. Bayer, A. Shabaev, Al. L. Efros, I. A. Merkulov, V. Stavarache, D. Reuter, A. Wieck

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

Abstract

Optical generation of electron spin coherence has been studied in n-modulation doped (In,Ga)As/GaAs quantum dots which contain on average a single electron per dot. For studying the spin coherence, the magnetic field was applied in the Voigt-geometry, and the precession of the electron spin about the field was monitored. The coherence is generated by resonant excitation of the quantum dots by circularly-polarized laser pulses, creating a coherent superposition of an electron and a trion state. The efficiency of the generation can be controlled by the pulse intensity, showing the pronounced Rabi oscillations. (c) 2006 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Original languageEnglish
Title of host publicationPhysica Status Solidi C - Current Topics in Solid State Physics, Vol 3, No 11
EditorsM Stutzmann
Place of PublicationWEINHEIM
PublisherWiley-VCH Verlag
Pages3740-3743
Number of pages4
ISBN (Print)*************
DOIs
Publication statusPublished - 2006
Event4th International Conference on Semiconductor Quantum Dots (QD 2006) - Chamonix Mont Blanc, France
Duration: 1 May 20065 May 2006

Conference

Conference4th International Conference on Semiconductor Quantum Dots (QD 2006)
CountryFrance
CityChamonix Mont Blanc
Period1/05/065/05/06

Cite this