title: Generation of nonclassical microwave states using an artificial atom in 1D open space.
abstract: We have embedded an artificial atom, a superconducting transmon qubit, in a 1D open space and investigated the scattering properties of an incident microwave coherent state. By studying the statistics of the reflected and transmitted fields, we demonstrate that the scattered states can be nonclassical. In particular, by measuring the second-order correlation function, g((2)), we show photon antibunching in the reflected field and superbunching in the transmitted field. We also compare the elastically and inelastically scattered fields using both phase-sensitive and phase-insensitive measurements.
authors.affiliation: Department of Microtechnology and Nanoscience (MC2), Chalmers University of Technology, SE-41296, Göteborg, Sweden.
authors.forename: Io-Chun
authors.initials: IC
authors.lastname: Hoi
authors.forename: Tauno
authors.initials: T
authors.lastname: Palomaki
authors.forename: Joel
authors.initials: J
authors.lastname: Lindkvist
authors.forename: Göran
authors.initials: G
authors.lastname: Johansson
authors.forename: Per
authors.initials: P
authors.lastname: Delsing
authors.forename: C M
authors.initials: CM
authors.lastname: Wilson