A single quantum dot as an optical thermometer for mK temperatures
Mesoscale and Nanoscale Physics
2014-08-06 v1
Abstract
Resonant laser spectroscopy of a negatively charged self-assembled quantum dot is utilized to measure the temperature of a three dimensional fermionic reservoir down to 100mK. With a magnetic field applied to the quantum dot the single charged ground state is split by the Zeeman energy. As the quantum dot is in tunnel contact with a thermal electron reservoir, a thermal occupation of the quantum dot spin states is enforced by co-tunneling processes. Resonant laser induced fluorescence is used in order to measure the thermal quantum dot spin state population.
Cite
@article{arxiv.1405.1981,
title = {A single quantum dot as an optical thermometer for mK temperatures},
author = {Florian Haupt and Atac Imamoglu and Martin Kroner},
journal= {arXiv preprint arXiv:1405.1981},
year = {2014}
}
Comments
11 pages, 4 figures