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Publication Citation: Generation and characterization of high-purity, pulsed squeezed light at telecom wavelengths from pp-KTP

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Author(s): Thomas Gerrits; Martin J. Stevens; Burm Baek; Brice R. Calkins; Adriana E. Lita; Scott C. Glancy; Emanuel H. Knill; Sae Woo Nam; Richard P. Mirin; Robert Hadfield; Ryan Bennink; Warren Grice; Sander N. Dorenbos; Tony Zijlstra; Teun Klapwijk; Val Zwiller;
Title: Generation and characterization of high-purity, pulsed squeezed light at telecom wavelengths from pp-KTP
Published: November 15, 2011
Abstract: We characterize a pp-KTP crystal designed to produce pure single mode squeezed vacuum at 1570 nm. Measurements show a raw (corrected) Hong-Ou-Mandel interference with 86 % (90 %) visibility and a circular joint spectral probability distribution with a Schmidt number of 1.08 when spectral filtering with 8.6 nm bandwidth is applied. We use superconducting nanowire single photon detectors to measure the joint spectral probability distribution, and use photon-number resolving transition edge sensors to perform Hong-Ou-Mandel interference experiments. Both types of detectors are used to measure second-order correlations: the nanowire detectors with time-domain histogramming, and the transition edge sensors by measuring photon number statistics. Results from these two very different techniques are in good agreement.
Citation: Optics Express
Volume: 19
Issue: 24
Pages: pp. 24434 - 24447
Keywords: homodyne detection; optical cat states; periodic poling; quantum information; squeezing; transition edge sensors
Research Areas: Single Photon Detectors, Entangled Photons, Single Photon Sources, Squeezing, Physics
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