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arXiv:1508.01298 · Physical review. B./Physical review. B

Entanglement dynamics of molecular exciton states in coupled quantum dots

Cameron V. Jennings, Michael Scheibner

Published Mar 17, 2016• 8 citations
arXivHTMLPDF

Abstract

We theoretically model the electronic dynamics of a coupled quantum dot pair in a static electric field. We then investigate the possibility of polarization-entangled photon emission from the radiative cascade of the molecular biexciton state. Through numerical simulations, we analyze the dependence of entanglement fidelity on temperature and electric field, as well as tunnel coupling. We establish a regime of direct-indirect exciton detunings for which coupled quantum dots are superior to single dots for entangled photon generation, yielding near-unit fidelity over a larger range of exchange splittings.

DOI
10.1103/physrevb.93.115311

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