title: Universal optical amplification without nonlinearity.
abstract: We propose and experimentally realize a new scheme for universal phase-insensitive optical amplification. The presented scheme relies only on linear optics and homodyne detection, thus circumventing the need for nonlinear interaction between a pump field and the signal field. The amplifier demonstrates near optimal quantum noise limited performance for a wide range of amplification factors.
authors.affiliation: Institut für Optik, Information und Photonik, Max-Planck Forschungsgruppe, Universität Erlangen-Nürnberg, Erlangen, Germany.
authors.forename: Vincent
authors.initials: V
authors.lastname: Josse
authors.forename: Metin
authors.initials: M
authors.lastname: Sabuncu
authors.forename: Nicolas J
authors.initials: NJ
authors.lastname: Cerf
authors.forename: Gerd
authors.initials: G
authors.lastname: Leuchs
authors.forename: Ulrik L
authors.initials: UL
authors.lastname: Andersen