title: Periodically poled lithium niobate waveguide sum-frequency generator for efficient single-photon detection at communication wavelengths.
abstract: We present a device to facilitate single-photon detection at communication wavelengths based on continuous-wave sum-frequency generation with an upconversion efficiency exceeding 90%. Sum-frequency generation in a periodically poled lithium niobate waveguide is used to upconvert signal photons to the near infrared, where detection can be performed efficiently by use of silicon avalanche photodiodes.
authors.affiliation: Edward L. Ginzton Laboratory, Stanford University, Stanford, California 94305-4085, USA. rrousev@stanford.edu
authors.forename: Rostislav V
authors.initials: RV
authors.lastname: Roussev
authors.forename: Carsten
authors.initials: C
authors.lastname: Langrock
authors.forename: Jonathan R
authors.initials: JR
authors.lastname: Kurz
authors.forename: M M
authors.initials: MM
authors.lastname: Fejer