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

Journal Article · Mon Feb 23 00:00:00 EST 2015 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4913743· OSTI ID:22412681

Meyer-Scott, Evan; Dot, Audrey ^[1]; Ahmad, Raja; Li, Lizhu; Rochette, Martin ^[2]; Jennewein, Thomas ^[1]

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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)

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.

• OSTI ID: 22412681
• Journal Information: Applied Physics Letters, Vol. 106, Issue 8; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

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