Prechtel, J.H., Dalgarno, P.A., Hadfield, R. , McFarlane, J., Badolato, A., Petroff, P.M. and Warburton, R.J. (2012) Fast electro-optics of a single self-assembled quantum dot in a charge-tunable device. Journal of Applied Physics, 111(4), 043112. (doi: 10.1063/1.3687375)
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Abstract
The response of a single InGaAs quantum dot, embedded in a miniaturized charge-tunable device, to an applied GHz bandwidth electrical pulse is investigated via its optical response. Quantum-dot response times of 1.0 ± 0.1 ns are characterized via several different measurement techniques, demonstrating GHz-bandwidth electrical control. Furthermore, a novel optical detection technique based on resonant electron-hole pair generation in the hybridization region is used to map fully the voltage pulse experienced by the quantum dot, showing, in this case, a simple exponential rise.
| Item Type: | Articles |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Hadfield, Professor Robert |
| Authors: | Prechtel, J.H., Dalgarno, P.A., Hadfield, R., McFarlane, J., Badolato, A., Petroff, P.M., and Warburton, R.J. |
| College/School: | College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering |
| Journal Name: | Journal of Applied Physics |
| Publisher: | American Institute of Physics |
| ISSN: | 0021-8979 |
| Published Online: | 29 February 2012 |
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