title: Detecting noise with shot noise using on-chip photon detector.
abstract: The high-frequency radiation emitted by a quantum conductor presents a rising interest in quantum physics and condensed matter. However, its detection with microwave circuits is challenging. Here, we propose to use the photon-assisted shot noise for on-chip radiation detection. It is based on the low-frequency current noise generated by the partitioning of photon-excited electrons and holes, which are scattered inside the conductor. For a given electromagnetic coupling to the radiation, the photon-assisted shot noise response is shown to be independent on the nature and geometry of the quantum conductor used for the detection, up to a Fano factor, characterizing the type of scattering mechanism. Ordered in temperature or frequency range, from few tens of mK or GHz to several hundred of K or THz respectively, a wide variety of conductors can be used like Quantum Point Contacts (this work), diffusive metallic or semi-conducting films, graphene, carbon nanotubes and even molecule, opening new experimental opportunities in quantum physics.
authors.affiliation: Nanoelectronics Group, Service de Physique de l'Etat Condense, IRAMIS/DSM (CNRS UMR 3680), CEA Saclay, F-91191 Gif-sur-Yvette, France.
authors.forename: Y
authors.initials: Y
authors.lastname: Jompol
authors.affiliation: Nanoelectronics Group, Service de Physique de l'Etat Condense, IRAMIS/DSM (CNRS UMR 3680), CEA Saclay, F-91191 Gif-sur-Yvette, France.
authors.forename: P
authors.initials: P
authors.lastname: Roulleau
authors.affiliation: Nanoelectronics Group, Service de Physique de l'Etat Condense, IRAMIS/DSM (CNRS UMR 3680), CEA Saclay, F-91191 Gif-sur-Yvette, France.
authors.forename: T
authors.initials: T
authors.lastname: Jullien
authors.affiliation: Nanoelectronics Group, Service de Physique de l'Etat Condense, IRAMIS/DSM (CNRS UMR 3680), CEA Saclay, F-91191 Gif-sur-Yvette, France.
authors.forename: B
authors.initials: B
authors.lastname: Roche
authors.affiliation: Semiconductor Physics group, Cavendish Laboratory, University of Cambridge, J.J. Thomson Avenue, Cambridge CB3 0HE, UK.
authors.forename: I
authors.initials: I
authors.lastname: Farrer
authors.affiliation: Semiconductor Physics group, Cavendish Laboratory, University of Cambridge, J.J. Thomson Avenue, Cambridge CB3 0HE, UK.
authors.forename: D A
authors.initials: DA
authors.lastname: Ritchie
authors.affiliation: Nanoelectronics Group, Service de Physique de l'Etat Condense, IRAMIS/DSM (CNRS UMR 3680), CEA Saclay, F-91191 Gif-sur-Yvette, France.
authors.forename: D C
authors.initials: DC
authors.lastname: Glattli