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arXiv · 2210.00076

Correlated twin-photon generation in a silicon nitrite loaded thin film PPLN waveguide

Antoine Henry·David Barral·Isabelle Zaquine·Andreas Boes·Arnan Mitchell·Nadia Belabas·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 photon pairs have a wavelength centred at 1560\,nm compatible with present telecom infrastructure, a large bandwidth (21\,THz) and a brightness of $\sim 2.5\times 10^5$\,pairs/s/mW/GHz. The photons are correlated and exhibit a cross correlation $g^{(2)}(0)$ of about 8000. Using the Hanbury Brown and Twiss effect, we have also shown heralded single photon emission, achieving an autocorrelation $g^{(2)}_H(0) \simeq 0.04$.

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Antoine Henry, David Barral, Isabelle Zaquine, Andreas Boes, Arnan Mitchell, Nadia Belabas, Kamel Bencheikh. 2022-09-30. Correlated twin-photon generation in a silicon nitrite loaded thin film PPLN waveguide. https://arxiv.org/abs/2210.00076

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