Spin-selective AC Stark shifts in a charged quantum dot
Quantum Physics
2019-04-04 v2 Mesoscale and Nanoscale Physics
Abstract
A strong, far-detuned laser can shift the energy levels of an optically active quantum system via the AC Stark effect. We demonstrate that the polarization of the laser results in a spin-selective modification to the energy structure of a charged quantum dot, shifting one spin manifold but not the other. An additional shift occurs due to the Overhauser field of the nuclear spins, which are pumped into a partially polarized state. This mechanism offers a potentially rapid, reversible, and coherent control of the energy structure and polarization selection rules of a charged quantum dot.
Cite
@article{arxiv.1812.02151,
title = {Spin-selective AC Stark shifts in a charged quantum dot},
author = {Tristan A. Wilkinson and Dillion J. Cottrill and Joshua M. Cramlet and Cole E. Maurer and Collin J. Flood and Allan S. Bracker and Michael Yakes and Dan Gammon and Edward B. Flagg},
journal= {arXiv preprint arXiv:1812.02151},
year = {2019}
}
Comments
5 pages, 4 figures