6-3 ultrafast electron control of optical device

Atsushi Hasegawa, Yasuyoshi Mitsumori

Research output: Contribution to journalArticlepeer-review


The many-body effect of the excitons in the semiconductor quantum dots is investigated in the frequency and time regions. The Rabi oscillation of the exciton in the semiconductor quantum dots is observed by the stimulated photon echo method. This is the first direct observation of the Rabi oscillation of the excitons. The signal intensity changes periodically with the excitation-intensity. The sharp spectrum from the single quantum dot is also observed by the micro-photoluminescence. The existence of phonon bottleneck is clarified from the temporal shape of the photoluminescence signal. These results show that the quantum dots is one of the good candidates for the device of the quantum computation.

Original languageEnglish
Pages (from-to)97-103
Number of pages7
JournalJournal of the Communications Research Laboratory
Issue number1
Publication statusPublished - 2002 Mar 1
Externally publishedYes


  • Micro-photoluminescence
  • Phonon bottleneck
  • Photon echo
  • Quantum dots
  • Rabi oscillation

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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