Gerardot, B.D., Barbour, R.J., Brunner, D., Dalgarno, P.A., Badolato, A. , Stoltz, N., Petroff, P.M., Houel, J. and Warburton, R.J. (2011) Laser spectroscopy of individual quantum dots charged with a single hole. Applied Physics Letters, 99(24), 243112. (doi: 10.1063/1.3665951)
Full text not currently available from Enlighten.
Abstract
We characterize the positively charged exciton (X1+) in single InGaAs quantum dots using resonant laser spectroscopy. Three samples with different dopant species (Be or C as acceptors, Si as a donor) are compared. The p-doped samples exhibit larger inhomogeneous broadening (×3) and smaller absorption contrast (×10) than the n-doped sample. For X1+ in the Be-doped sample, a dot dependent non-linear Fano effect is observed, demonstrating coupling to degenerate continuum states. However, for the C-doped sample, the X1+ lineshape and saturation broadening follows isolated atomic transition behaviour. This C-doped device structure is useful for single hole spin initialization, manipulation, and measurement.
| Item Type: | Articles |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Badolato, Professor Antonio |
| Authors: | Gerardot, B.D., Barbour, R.J., Brunner, D., Dalgarno, P.A., Badolato, A., Stoltz, N., Petroff, P.M., Houel, J., and Warburton, R.J. |
| College/School: | College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering |
| Journal Name: | Applied Physics Letters |
| Publisher: | AIP Publishing |
| ISSN: | 0003-6951 |
| ISSN (Online): | 1077-3118 |
| Published Online: | 14 December 2011 |
University Staff: Request a correction | Enlighten Editors: Update this record
Altmetric
Altmetric