Lasing and transport in a multi-level double quantum dot system coupled to a microwave oscillator
Abstract
We study a system of two quantum dots, each with several discrete levels, which are coherently coupled to a microwave oscillator. They are attached to electronic leads and coupled to a phonon bath, both leading to inelastic processes. For a simpler system with a single level in each dot it has been shown that a population inversion can be created by electron tunneling, which in a resonance situation leads to lasing-type properties of the oscillator. In the multi-level system several resonance situations may arise, some of them relying on a sequence of tunneling processes which also involve non-resonant, inelastic transitions. The resulting photon number in the oscillator and the current-voltage characteristic are highly sensitive to these properties and accordingly can serve as a probe for microscopic details.
Keywords
Cite
@article{arxiv.1511.06647,
title = {Lasing and transport in a multi-level double quantum dot system coupled to a microwave oscillator},
author = {Christian Karlewski and Andreas Heimes and Gerd Schön},
journal= {arXiv preprint arXiv:1511.06647},
year = {2016}
}
Comments
6 pages, 5 figures