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Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)

Short-Wave Infrared Correlated Photons from Silicon Waveguides

Lawrence M. Rosenfeld, Dominic A. Sulway, Mark G. Thompson, John Rarity, Joshua W. Silverstone

Published Jun 1, 2019• 0 citations

Abstract

Quantum technologies that harness the properties of superposition and entanglement promise to revolutionise many fields, from information processing to metrology. Silicon-integrated quantum photonics operating in the telecom band suffers from deleterious two-photon absorption (TPA) [1,2]. Cross-TPA reduces the brightness and ultimately the heralding efficiency [3] of spontaneous four-wave mixing (SFWM) photon-pair sources, where single photons necessarily co-propagate with a bright pump. Nonlinear losses can be mitigated by pumping and generating photons with energies close to and beyond silicon's two-photon band edge [4,5]. We report the first quantum-correlated photon pairs in the 2.1 μm short-wave infrared (SWIR) band, produced on-chip from a silicon waveguide spiral.

DOI: 10.1109/cleoe-eqec.2019.8872537

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