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Magnetic-field-induced reduction of the exciton polarization splitting in InAs quantum dots

Research output: Contribution to journalJournal article


  • R M Stevenson
  • R J Young
  • P See
  • D G Gevaux
  • K Cooper
  • P Atkinson
  • I Farrer
  • D A Ritchie
  • A J Shields

Associated organisational unit

Article number033306
<mark>Journal publication date</mark>01/2006
<mark>Journal</mark>Physical Review B
Number of pages4
<mark>Original language</mark>English


By the application of an in-plane magnetic field, we demonstrate control of the fine structure polarization splitting of the exciton emission lines in individual InAs quantum dots. The selection of quantum dots with certain barrier composition and confinement energies is found to determine the magnetic field dependent increase or decrease of the separation of the bright exciton emission lines, and has enabled the splitting to be tuned to zero within the resolution of our experiments. Observed behavior allows us to determine g factors and exchange splittings for different types of dots.