title: Observation of resonant photon blockade at microwave frequencies using correlation function measurements.
abstract: Creating a train of single photons and monitoring its propagation and interaction is challenging in most physical systems, as photons generally interact very weakly with other systems. However, when confining microwave frequency photons in a transmission line resonator, effective photon-photon interactions can be mediated by qubits embedded in the resonator. Here, we observe the phenomenon of photon blockade through second-order correlation function measurements. The experiments clearly demonstrate antibunching in a continuously pumped source of single microwave photons measured by using microwave beam splitters, linear amplifiers, and quadrature amplitude detectors. We also investigate resonance fluorescence and Rayleigh scattering in Mollow-triplet-like spectra.
authors.affiliation: Department of Physics, ETH Zürich, Zürich, Switzerland.
authors.forename: C
authors.initials: C
authors.lastname: Lang
authors.forename: D
authors.initials: D
authors.lastname: Bozyigit
authors.forename: C
authors.initials: C
authors.lastname: Eichler
authors.forename: L
authors.initials: L
authors.lastname: Steffen
authors.forename: J M
authors.initials: JM
authors.lastname: Fink
authors.forename: A A
authors.initials: AA
authors.lastname: Abdumalikov
authors.forename: M
authors.initials: M
authors.lastname: Baur
authors.forename: S
authors.initials: S
authors.lastname: Filipp
authors.forename: M P
authors.initials: MP
authors.lastname: da Silva
authors.forename: A
authors.initials: A
authors.lastname: Blais
authors.forename: A
authors.initials: A
authors.lastname: Wallraff