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arXiv · 1812.02151

Spin-selective AC Stark shifts in a charged quantum dot

Tristan A. Wilkinson·Dillion J. Cottrill·Joshua M. Cramlet·Cole E. Maurer·Collin J. Flood·Allan S. Bracker·Michael Yakes·Dan Gammon·Edward B. Flagg
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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.

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Tristan A. Wilkinson, Dillion J. Cottrill, Joshua M. Cramlet, Cole E. Maurer, Collin J. Flood, Allan S. Bracker, Michael Yakes, Dan Gammon, Edward B. Flagg. 2018-12-18. Spin-selective AC Stark shifts in a charged quantum dot. https://doi.org/10.1063/1.5084244

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