title: Microwave Emission from Hybridized States in a Semiconductor Charge Qubit.
abstract: We explore the microwave radiation emitted from a biased double quantum dot due to the inelastic tunneling of single charges. Radiation is detected over a broad range of detuning configurations between the dot energy levels, with pronounced maxima occurring in resonance with a capacitively coupled transmission line resonator. The power emitted for forward and reverse resonant detuning is found to be in good agreement with a rate equation model, which considers the hybridization of the individual dot charge states.
authors.affiliation: Department of Physics, ETH Zürich, CH-8093 Zurich, Switzerland.
authors.forename: A
authors.initials: A
authors.lastname: Stockklauser
authors.affiliation: Department of Physics, ETH Zürich, CH-8093 Zurich, Switzerland.
authors.forename: V F
authors.initials: VF
authors.lastname: Maisi
authors.affiliation: Department of Physics, ETH Zürich, CH-8093 Zurich, Switzerland.
authors.forename: J
authors.initials: J
authors.lastname: Basset
authors.affiliation: Department of Physics, ETH Zürich, CH-8093 Zurich, Switzerland.
authors.forename: K
authors.initials: K
authors.lastname: Cujia
authors.affiliation: Department of Physics, ETH Zürich, CH-8093 Zurich, Switzerland.
authors.forename: C
authors.initials: C
authors.lastname: Reichl
authors.affiliation: Department of Physics, ETH Zürich, CH-8093 Zurich, Switzerland.
authors.forename: W
authors.initials: W
authors.lastname: Wegscheider
authors.affiliation: Department of Physics, ETH Zürich, CH-8093 Zurich, Switzerland.
authors.forename: T
authors.initials: T
authors.lastname: Ihn
authors.affiliation: Department of Physics, ETH Zürich, CH-8093 Zurich, Switzerland.
authors.forename: A
authors.initials: A
authors.lastname: Wallraff
authors.affiliation: Department of Physics, ETH Zürich, CH-8093 Zurich, Switzerland.
authors.forename: K
authors.initials: K
authors.lastname: Ensslin