Anomalous decay of photon echo in a quantum dot ensemble in the strong excitation regime

Ryosuke Suemori, Kouichi Akahane, Naokatsu Yamamoto, Junko Ishi-Hayase

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We investigated the coherent dynamics of exciton ground-state transitions in an 150-layer-stacked strain-compensated InAs quantum dot ensemble using photon echo (PE) technique in the strong excitation regime. The time delay dependence of PE signal intensity shows a drastic change depending on the excitation intensity and the aperture position placed in front of a detector. Our results suggest that the excitation-intensity-dependent spatial distribution of PE signal intensity plays an important role in observing PE signal decay in the strong excitation regime.

Original languageEnglish
Title of host publicationPhysics of Semiconductors - Proceedings of the 31st International Conference on the Physics of Semiconductors, ICPS 2012
PublisherAmerican Institute of Physics Inc.
Pages536-537
Number of pages2
ISBN (Print)9780735411944
DOIs
Publication statusPublished - 2013 Jan 1
Event31st International Conference on the Physics of Semiconductors, ICPS 2012 - Zurich, Switzerland
Duration: 2012 Jul 292012 Aug 3

Publication series

NameAIP Conference Proceedings
Volume1566
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

Other31st International Conference on the Physics of Semiconductors, ICPS 2012
CountrySwitzerland
CityZurich
Period12/7/2912/8/3

Keywords

  • Four-wave mixing
  • Photon echo
  • Quantum dots
  • Rabi oscillation
  • dephasing

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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