Coherent control and spectroscopy of a semiconductor quantum dot Wigner molecule
Mesoscale and Nanoscale Physics
2021-09-22 v1 Quantum Physics
Abstract
Multi-electron semiconductor quantum dots have found wide application in qubits, where they enable readout and enhance polarizability. However, coherent control in such dots has typically been restricted to only the lowest two levels, and such control in the strongly interacting regime has not been realized. Here we report quantum control of eight different resonances in a silicon-based quantum dot. We use qubit readout to perform spectroscopy, revealing a dense set of energy levels with characteristic spacing far smaller than the single-particle energy. By comparing with full configuration interaction calculations, we argue that the dense set of levels arises from Wigner-molecule physics.
Keywords
Cite
@article{arxiv.2009.13572,
title = {Coherent control and spectroscopy of a semiconductor quantum dot Wigner molecule},
author = {J. Corrigan and J. P. Dodson and H. Ekmel Ercan and J. C. Abadillo-Uriel and Brandur Thorgrimsson and T. J. Knapp and Nathan Holman and Thomas McJunkin and Samuel F. Neyens and E. R. MacQuarrie and Ryan H. Foote and L. F. Edge and Mark Friesen and S. N. Coppersmith and M. A. Eriksson},
journal= {arXiv preprint arXiv:2009.13572},
year = {2021}
}