Publication Date:
2018-10-04
Description:
Author(s): Wen Xiong, Xiulai Xu, Jun-Wei Luo, Ming Gong, Shu-Shen Li, and Guang-Can Guo Self-assembled quantum dots (QDs) can be used as on-demand sources of polarization-entangled photon pairs, but it turns out that their fullest utility is spoiled by a subtlety of electronic structure that cannot be ironed out simply. Investigating a little-studied symmetry-breaking effect between excitons and biexcitons in QDs, the authors derive the relations between lifetime asymmetries, polarization angles, and fine-structure splittings, then verify them using large-scale atomistic simulations. The complete description of excitons and biexcitons in QDs presented here could also be useful in understanding the optical properties of other semiconductor nanostructures. [Phys. Rev. Applied 10, 044009] Published Wed Oct 03, 2018
Electronic ISSN:
2331-7019
Topics:
Physics
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