Nanowire quantum dots as an ideal source of entangled photon pairs.
We predict that heterostructure quantum wires and [111] grown quantum dots have a vanishing fine-structure splitting on the grounds of their symmetry, and are therefore ideal candidates to generate entangled photon pairs. We underpin this proposal by atomistic million-atom many-body pseudopotential calculations of realistic structures and find that the vanishing fine-structure splitting is robust against possible variations in morphology.
Max Planck Institute for Solid State Research, D-70569 Stuttgart, Germany.
Ranber
R
Singh
Gabriel
G
Bester