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Title: Power-efficient production of photon pairs in a tapered chalcogenide microwire

Using tapered fibers of As{sub 2}Se{sub 3} chalcogenide glass, we produce photon pairs at telecommunication wavelengths with low pump powers. We found maximum coincidences-to-accidentals ratios of 2.13 ± 0.07 for degenerate pumping with 3.2 μW average power, and 1.33 ± 0.03 for non-degenerate pumping with 1.0 μW and 1.5 μW average power of the two pumps. Our results show that the ultrahigh nonlinearity in these microwires could allow single-photon pumping to produce photon pairs, enabling the production of large entangled states, heralding of single photons after lossy transmission, and photonic quantum information processing with nonlinear optics.
Authors:
;  [1] ; ; ;  [2] ;  [1] ;  [3]
  1. Institute for Quantum Computing and Department of Physics and Astronomy, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1 (Canada)
  2. Department of Electrical and Computer Engineering, McGill University, 3480 University Street, Montréal, Québec H3A 2A7 (Canada)
  3. (Canada)
Publication Date:
OSTI Identifier:
22412681
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 106; Journal Issue: 8; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ARSENIC SELENIDES; DATA PROCESSING; FIBERS; GLASS; NONLINEAR OPTICS; NONLINEAR PROBLEMS; OPTICAL FIBERS; OPTICAL PUMPING; PHOTONS; QUANTUM ENTANGLEMENT; QUANTUM INFORMATION; WAVELENGTHS