Resolved Sideband Emission of InAs/GaAs Quantum Dots Strained by Surface Acoustic Waves

Details Resolved Sideband Emission of InAs/GaAs Quantum Dots Strained by Surface Acoustic Waves Resolved Sideband Emission of InAs/GaAs Quantum Dots Strained by Surface Acoustic Waves

2010-08-13

arxiv.org/abs/1008.2342v1

Phys. Rev. Lett. 105, 037401 (2010)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.105.037401

The dynamic response of InAs/GaAs self-assembled quantum dots (QDs) to strain is studied experimentally by periodically modulating the QDs with a surface acoustic wave and measuring the QD fluorescence with photoluminescence and resonant spectroscopy. When the acoustic frequency is larger than the QD linewidth, we resolve phonon sidebands in the QD fluorescence spectrum. Using a resonant pump laser, we have demonstrated optical frequency conversion via the dynamically modulated QD, which is the physical mechanism underlying laser sideband cooling a nanomechanical resonator by means of an embedded QD.

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