Young, R. J. and Stevenson, R. M. and Shields, A. J. and Atkinson, P. and Cooper, K. and Ritchie, D. A. and Groom, K. M. and Tartakovskii, A. I. and Skolnick, M. S. (2006) Inversion of the exciton fine structure splitting in quantum dots. Physica E: Low-dimensional Systems and Nanostructures, 32 (1-2). pp. 97-100. ISSN 1386-9477Full text not available from this repository.
The fine structure splitting of exciton state was measured for a large number of single InAs quantum dots in GaAs. It is shown to decrease as the exciton confinement decreases, crucially passing through zero and changing sign. Degeneracy of the exciton spin states is an important step to producing entangled photons from the biexciton cascade. Thermal annealing reduces the exciton confinement and thereby increases the number of degenerate dots in a particular sample. (c) 2006 Elsevier B.V. All rights reserved.
|Journal or Publication Title:||Physica E: Low-dimensional Systems and Nanostructures|
|Subjects:||Q Science > QC Physics|
|Departments:||Faculty of Science and Technology > Physics|
|Deposited On:||07 Jun 2012 12:35|
|Last Modified:||09 Apr 2014 23:37|
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