Correlated twin-photon generation in a silicon nitride loaded thin film PPLN waveguide
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Date
2023
Authors
Henry, A.
Barral, D.
Zaquine, I.
Boes, A.
Mitchell, A.
Belabas, N.
Bencheikh, K.
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Journal article
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Optics Express, 2023; 31(5):7277-1-7277-13
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Antoine Henry, David Barral, Isabelle Zaquine, Andreas Boes, Arnan Mitchell, Nadia Belabas, and Kamel Bencheikh
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Abstract
Photon-pair sources based on thin film lithium niobate on insulator technology have a great potential for integrated optical quantum information processing. We report on such a source of correlated twin-photon pairs generated by spontaneous parametric down conversion in a silicon nitride (SiN) rib loaded thin film periodically poled lithium niobate (LN) waveguide. The generated correlated photon pairs have a wavelength centred at 1560 nm compatible with present telecom infrastructure, a large bandwidth (21 THz) and a brightness of ∼2.5 × 105 pairs/s/mW/GHz. Using the Hanbury Brown and Twiss effect, we have also shown heralded single photon emission, achieving an autocorrelation g (2) H (0) ≃ 0.04.
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© 2023 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement.