Related papers: High-quality multi-wavelength quantum light sources on silicon nitride micro-ring chip

High-quality multi-wavelength quantum light sources on silicon nitride micro-ring chip

URL: http://arxiv.org/abs/2209.11417v1
Date: Fri, 23 Sep 2022 05:32:10 GMT
Title: High-quality multi-wavelength quantum light sources on silicon nitride micro-ring chip
Authors: Yun-Ru Fan, Chen Lyu, Chen-Zhi Yuan, Guang-Wei Deng, Zhi-Yuan Zhou, Yong Geng, Hai-Zhi Song, You Wang, Yan-Feng Zhang, Rui-Bo Jin, Heng Zhou, Li-Xing You, Guang-Can Guo, and Qiang Zhou
Abstract summary: Multi-wavelength quantum light sources, especially at telecom band, are extremely desired in quantum information technology. Here we demonstrate a multiwavelength quantum light source using a silicon nitride micro-ring with a free spectral range of 200 GHz. The generation of eight pairs of correlated photons is ensured in a wavelength range of 25.6 nm.
Score: 5.517255247747876
License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Abstract: Multi-wavelength quantum light sources, especially at telecom band, are extremely desired in quantum information technology. Despite recent impressive advances, such a quantum light source with high quality remains challenging. Here we demonstrate a multi-wavelength quantum light source using a silicon nitride micro-ring with a free spectral range of 200 GHz. The generation of eight pairs of correlated photons is ensured in a wavelength range of 25.6 nm. With device optimization and noise-rejecting filters, our source enables the generation of heralded single-photons - at a rate of 62 kHz with $g^{(2)}_{h}(0)=0.014\pm0.001$, and the generation of energy-time entangled photons - with a visibility of $99.39\pm 0.45\%$ in the Franson interferometer. These results, at room temperature and telecom wavelength, in a CMOS compatible platform, represent an important step towards integrated quantum light devices for the quantum networks.

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