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Laser spectroscopy of individual quantum dots charged with a single hole

Gerardot, B. D. and Barbour, R. J. and Brunner, D. and Dalgarno, P. A. and Badolato, A. and Stoltz, N. and Petroff, P. M. and Houel, J. and Warburton, R. J.. (2011) Laser spectroscopy of individual quantum dots charged with a single hole. Applied Physics Letters, 99 (24). p. 243112.

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Official URL: http://edoc.unibas.ch/dok/A6002521

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Abstract

We characterize the positively charged exciton (X(1+)) 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 (x3) and smaller absorption contrast (x10) than the n-doped sample. For X(1+) 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 X(1+) lineshape and saturation broadening follows isolated atomic transition behaviour. This C-doped device structure is useful for single hole spin initialization, manipulation, and measurement. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3665951]
Faculties and Departments:05 Faculty of Science > Departement Physik > Physik > Experimental Physics (Warburton)
UniBasel Contributors:Warburton, Richard J
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:AIP Publishing
ISSN:0003-6951
e-ISSN:1077-3118
Note:Publication type according to Uni Basel Research Database: Journal article
Language:English
Identification Number:
Last Modified:16 Feb 2017 09:28
Deposited On:14 Sep 2012 07:16

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