title: High-yield single-photon source using gated spontaneous parametric downconversion.
abstract: The construction of a single-photon source by use of gated parametric fluorescence is reported with the measurement results of the photon number distribution. A beamlike twin-photon method is used in order to achieve high-collection efficiency. The estimated probability P(1) to find a single photon in a collimated output pulse is 26.5% at a repetition rate of 10 kHz when the effective quantum efficiency of 27.4% in the detection setup is compensated.
authors.affiliation: Research Institute for Electronic Science, Hokkaido University, Kita-ku, Sapporo, Hokkaido 060-0812, Japan. takeuchi@es.hokudai.ac.jp
authors.forename: Shigeki
authors.initials: S
authors.lastname: Takeuchi
authors.forename: Ryo
authors.initials: R
authors.lastname: Okamoto
authors.forename: Keiji
authors.initials: K
authors.lastname: Sasaki