Environment assisted tunneling in microwave cavities

Ulrich Kuhl

A.R. Bosco de Magalhães, R. Rossi, Maria Carolina Nemes

J.-R. Souquet, Matthew J. Woolley, Julien Gabelli +2 more

Patrick P. Potts, J.-R. Souquet, Aashish A. Clerk

A voltage biased Josephson junction coupled to two microwave cavities which are in turn coupled to two ``hot'' and ``cold'' thermal environments, constitutes the proposal for the first thermoelectric heat engine where the heat current is completely separated from the electronic degrees of freedom.

Matthias Hübler, Juan Carlos Cuevas, Wolfgang Belzig

Advances in circuit quantum electrodynamics have enabled the generation of arbitrary nonclassical microwave states, enabling progress in physics. Here, we present a theoretical study of the electrical current in a Josephson tunnel junction interacting with a nonclassical electromagnetic environment. This allows us to generalize classical transport phenomena like photon-assisted tunneling and Shapiro steps to the quantum regime. We predict that the analysis of the supercurrent in such a setup enables the complete reconstruction of quantum states of the electromagnetic environment, something that is not possible with normal tunnel junctions.

Matthew J. Reagor, Hanhee Paik, Luyan Sun +3 more