title: Coherent Absorption of N00N States.
abstract: Recent results in deeply subwavelength thickness films demonstrate coherent control and logical gate operations with both classical and single-photon light sources. However, quantum processing and devices typically involve more than one photon and nontrivial input quantum states. Here we experimentally investigate two-photon N00N state coherent absorption in a multilayer graphene film. Depending on the N00N state input phase, it is possible to selectively choose between single- or two-photon absorption of the input state in the graphene film. These results demonstrate that coherent absorption in the quantum regime exhibits unique features, opening up applications in multiphoton spectroscopy and imaging.
authors.affiliation: School of Engineering and Physical Sciences, Heriot-Watt University, EH14 4AS Edinburgh, United Kingdom.
authors.forename: Thomas
authors.initials: T
authors.lastname: Roger
authors.affiliation: School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom.
authors.forename: Sara
authors.initials: S
authors.lastname: Restuccia
authors.affiliation: School of Engineering and Physical Sciences, Heriot-Watt University, EH14 4AS Edinburgh, United Kingdom.
authors.forename: Ashley
authors.initials: A
authors.lastname: Lyons
authors.affiliation: School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom.
authors.forename: Daniel
authors.initials: D
authors.lastname: Giovannini
authors.affiliation: School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom.
authors.forename: Jacquiline
authors.initials: J
authors.lastname: Romero
authors.affiliation: Department of Physics, University of Strathclyde, Glasgow, G4 0NG Scotland, United Kingdom.
authors.forename: John
authors.initials: J
authors.lastname: Jeffers
authors.affiliation: School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom.
authors.forename: Miles
authors.initials: M
authors.lastname: Padgett
authors.affiliation: School of Engineering and Physical Sciences, Heriot-Watt University, EH14 4AS Edinburgh, United Kingdom.
authors.forename: Daniele
authors.initials: D
authors.lastname: Faccio