title: Antibunched Photons from Inelastic Cooper-Pair Tunneling.
abstract: We demonstrate theoretically that charge transport across a Josephson junction, voltage-biased through a resistive environment, produces antibunched photons. We develop a continuous-mode description of the emitted radiation field in a semi-infinite transmission line terminated by the Josephson junction. Within a perturbative treatment in powers of the tunneling coupling across the Josephson junction, we capture effects originating in charging dynamics of consecutively tunneling Cooper pairs. We find that within a feasible experimental setup the Coulomb blockade provided by high zero-frequency impedance can be used to create antibunched photons at a very high rate and in a very versatile frequency window ranging from a few GHz to a THz.
authors.affiliation: Microtechnology and Nanoscience, MC2, Chalmers University of Technology, SE-412 96 Göteborg, Sweden.
authors.forename: Juha
authors.initials: J
authors.lastname: Leppäkangas
authors.affiliation: Microtechnology and Nanoscience, MC2, Chalmers University of Technology, SE-412 96 Göteborg, Sweden.
authors.forename: Mikael
authors.initials: M
authors.lastname: Fogelström
authors.affiliation: Université Grenoble Alpes, INAC-SPSMS, F-38000 Grenoble, France.|CEA, INAC-SPSMS, F-38000 Grenoble, France.
authors.forename: Alexander
authors.initials: A
authors.lastname: Grimm
authors.affiliation: Université Grenoble Alpes, INAC-SPSMS, F-38000 Grenoble, France.|CEA, INAC-SPSMS, F-38000 Grenoble, France.
authors.forename: Max
authors.initials: M
authors.lastname: Hofheinz
authors.affiliation: Institut für Theoretische Festkörperphysik, Karlsruhe Institute of Technology, D-76128 Karlsruhe, Germany.
authors.forename: Michael
authors.initials: M
authors.lastname: Marthaler
authors.affiliation: Microtechnology and Nanoscience, MC2, Chalmers University of Technology, SE-412 96 Göteborg, Sweden.
authors.forename: Göran
authors.initials: G
authors.lastname: Johansson