Publication Date:
2017-07-15
Description:
Author(s): Joanna Skiba-Szymanska, R. Mark Stevenson, Christiana Varnava, Martin Felle, Jan Huwer, Tina Müller, Anthony J. Bennett, James P. Lee, Ian Farrer, Andrey B. Krysa, Peter Spencer, Lucy E. Goff, David A. Ritchie, Jon Heffernan, and Andrew J. Shields It would be terrific to use semiconductor quantum dots to produce entangled photons in a quantum communication network, but entanglement is complicated by the exciton spin splitting of typical dots. The authors present a growth strategy that improves the in-plane aspect ratio of I I I − V quantum dots by 72%, greatly reducing the fine-structure splitting of exciton eigenstates that is the root of the problem. Their approach can be implemented with either molecular-beam or vapor-phase epitaxy, to yield dots that emit at telecommunication wavelengths and are easily incorporated into optical cavities. [Phys. Rev. Applied 8, 014013] Published Fri Jul 14, 2017
Electronic ISSN:
2331-7019
Topics:
Physics
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