Inversion of exciton level splitting in quantum dots
By Robert J. Young, R. Stevenson, Andrew J. Shields, P. Atkinson, K. Cooper, David A. Ritchie, K. Groom, A. Tartakovskii, M. Skolnick. 2005
158 citations recorded by the source corpus.
The demonstration of degeneracy of exciton spin states is an important step toward the production of entangled photon pairs from the biexciton cascade. We measure the fine structure of exciton and biexciton states for a large number of single InAs quantum dots in a GaAs matrix; the energetic splitting of the horizontally and vertically polarized components of the exciton doublet is shown to decrease as the exciton confinement decreases, crucially passing through zero and changing sign. Thermal annealing is shown to reduce the exciton confinement, thereby increasing the number of dots with splitting close to zero.
Subfields: Atomic and Molecular Physics, and Optics, Materials Chemistry
View Paper: https://www.semanticscholar.org/paper/e4bf6830a8ea059839b82400e1920a928aedd051
How researchers see this paper
The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.
In Atomic and Molecular Physics, and Optics
Citations in the corpus
- Electric-field-induced coherent coupling of the exciton states in a single quantum dot (2010, methodology): “The InAs dots are grown at the centre of a 10nm GaAs quantum well clad with a short period superlattice equivalent to Al0.”