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Frontiers in Optics

On-chip photon pair source based on spontaneous parametric down conversion

Xiang Guo, Chang‐Ling Zou, Carsten Schuck, Hojoong Jung, Risheng Cheng, Hong X. Tang

Published Jan 1, 2016• 0 citations
Publisher

Abstract

We demonstrate an on-chip parametric down conversion photon pair source based on second order nonlinearity. High brightness, low noise, high purity photon pairs are generated in a microring resonator on Aluminum nitride-on-Insulator platform.
DOI
10.1364/fio.2016.fth5g.4

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We demonstrate a reconfigurable photon pair source based on spontaneous parametric downconversion in a periodically poled aluminum nitride doubly resonant system. The device features two linearly uncoupled microring resonators integrated in a Mach-Zehnder interferometer, enabling independent tuning of pump and signal/idler resonances without complex dispersion engineering. Using a silicon nitride strip-loaded waveguide on poled aluminum nitride, we achieve quasi-phase-matching and resonant enhancement over a broad spectral range. Simulations predict efficient generation across a bandwidth of over 200 nm, with rates exceeding 4 MHz/mW per resonance. This platform offers high performance, spectral tunability, and fabrication tolerance for integrated quantum photonic applications.