Electro-elastic tuning of sngle particles in individual self-assembled quantum dots

Chris Kuklewicz, Ralph N. E. Malein, Pierre M. Petroff, Brian D. Gerardot

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

We investigate the effect of uniaxial stress on InGaAs quantum dots in a charge tunable device. Using Coulomb blockade and photoluminescence, we observe that significant tuning of single particle energies (approximate to-0.22 meV/MPa) leads to variable tuning of exciton energies (+18 to -0.9 mu eV/MPa) under tensile stress. Modest tuning of the permanent dipole, Coulomb interaction and fine-structure splitting energies is also measured. We exploit the variable exciton response to tune multiple quantum dots on the same chip into resonance.

Original languageEnglish
Pages (from-to)3761-3765
Number of pages5
JournalNano Letters
Volume12
Issue number7
DOIs
Publication statusPublished - Jul 2012

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