Theory of active dephasing control in qubit arrays

M. Sasaki, A. Hasegawa, Y. Mitsumori, F. Minami

Research output: Contribution to journalConference articlepeer-review

2 Citations (Scopus)


We develop a theory of active dephasing control of qubit systems in array structures by using the multi-wave mixing technique. Assuming an acoustic phonon with a cutoff frequency ωc as the reservoir boson, we evaluate the state evolution of the qubit-reservoir system under irradiation of an optical pulse sequence. The effect of active dephasing control by the optical π pulses would be observed as diffracted echo signals in the phase-matching direction. The analysis for the case of weak pulse control is also presented.

Original languageEnglish
Pages (from-to)215-219
Number of pages5
JournalJournal of Luminescence
Issue number1-4
Publication statusPublished - 2004 Jun 1
Externally publishedYes
EventProceedings of the Fourtheenth International Conference - Christchurch, New Zealand
Duration: 2003 Aug 32003 Aug 8


  • Decoherence
  • Multiwave mixing
  • Photon echo
  • Qubit

ASJC Scopus subject areas

  • Biophysics
  • Biochemistry
  • Chemistry(all)
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics


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