Lookup NU author(s): Dr Jonathan Mar
This is the final published version of an article that has been published in its final definitive form by AIP Publishing LLC, 2010.
For re-use rights please refer to the publisher's terms and conditions.
The fine-structure splitting δ1 of the bright exciton doublet in self-assembled InGaAs/GaAs quantum dots is measured as a function of the applied in-plane electric field using time-resolved Kerr rotation. We observe a significant reduction of δ1 with increasing electric field, suggesting a symmetrizing of the electron and hole wave functions. For sufficiently high fields, it is shown that δ1 can be made less than the quantum dot homogeneous linewidth γ, which is calculated using an appropriate model. This may open the way for the electrical control of polarization-entangled photon pair creation through the radiative biexciton cascade.
Author(s): Mar JD, Xu XL, Sandhu JS, Irvine AC, Hopkinson M, Williams DA
Publication type: Article
Publication status: Published
Journal: Applied Physics Letters
Online publication date: 01/12/2010
Date deposited: 15/06/2020
ISSN (print): 0003-6951
ISSN (electronic): 1077-3118
Publisher: AIP Publishing LLC
Altmetrics provided by Altmetric