title: Discorrelated quantum states.
abstract: The statistical properties of photons are fundamental to investigating quantum mechanical phenomena using light. In multiphoton, two-mode systems, correlations may exist between outcomes of measurements made on each mode which exhibit useful properties. Correlation in this sense can be thought of as increasing the probability of a particular outcome of a measurement on one subsystem given a measurement on a correlated subsystem. Here, we show a statistical property we call "discorrelation", in which the probability of a particular outcome of one subsystem is reduced to zero, given a measurement on a discorrelated subsystem. We show how such a state can be constructed using readily available building blocks of quantum optics, namely coherent states, single photons, beam splitters and projective measurement. We present a variety of discorrelated states, show that they are entangled, and study their sensitivity to loss.
authors.affiliation: Department of Physics, University of Paderborn, Warburger Straße 100, 33098 Paderborn, Germany.
authors.forename: Evan
authors.initials: E
authors.lastname: Meyer-Scott
authors.affiliation: Department of Physics, University of Paderborn, Warburger Straße 100, 33098 Paderborn, Germany.
authors.forename: Johannes
authors.initials: J
authors.lastname: Tiedau
authors.affiliation: Department of Physics, University of Paderborn, Warburger Straße 100, 33098 Paderborn, Germany.
authors.forename: Georg
authors.initials: G
authors.lastname: Harder
authors.affiliation: National Institute of Standards and Technology, 325 Broadway, Boulder, CO, 80305, USA.
authors.forename: Lynden K
authors.initials: LK
authors.lastname: Shalm
authors.affiliation: Department of Physics, University of Paderborn, Warburger Straße 100, 33098 Paderborn, Germany.
authors.forename: Tim J
authors.initials: TJ
authors.lastname: Bartley