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Modulation of single quantum dot energy levels by a surface-acoustic-wave

Research output: Contribution to journalJournal article


  • J. R. Gell
  • M. B. Ward
  • R. J. Young
  • R. M. Stevenson
  • P. Atkinson
  • D. Anderson
  • G. A. C. Jones
  • D. A. Ritchie
  • A. J. Shields

Associated organisational unit

Article number081115
<mark>Journal publication date</mark>25/08/2008
<mark>Journal</mark>Applied Physics Letters
Number of pages3
<mark>Original language</mark>English


This letter presents an experimental investigation into the effect of a surface-acoustic-wave (SAW) on the emission of a single InAs quantum dot. The SAW causes the energy of the transitions within the dot to oscillate at the frequency of the SAW, producing a characteristic broadening of the emission lines in their time-averaged spectra. This periodic tuning of the transition energy is used as a method to regulate the output of a device containing a single quantum dot and we study the system as a high-frequency periodic source of single photons. (C) 2008 American Institute of Physics.