1. Multi‐Wavelength Quantum Light Sources on Silicon Nitride Micro‐Ring Chip.
- Author
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Fan, Yun‐Ru, Lyu, Chen, Yuan, Chen‐Zhi, Deng, Guang‐Wei, Zhou, Zhi‐Yuan, Geng, Yong, Song, Hai‐Zhi, Wang, You, Zhang, Yan‐Feng, Jin, Rui‐Bo, Zhou, Heng, You, Li‐Xing, Wang, Zhen, Guo, Guang‐Can, and Zhou, Qiang
- Subjects
PHOTONS ,SILICON nitride ,PHOTON pairs ,LIGHT sources ,NITRIDES ,WAVELENGTHS ,SINGLE photon generation - Abstract
Multi‐wavelength quantum light sources are extremely desired in establishing communication links among multiple users for realizing quantum networks. Despite recent impressive advances, developing such a quantum light source with high quality remains challenging. Here a multi‐wavelength quantum light source using a silicon nitride micro‐ring with a free spectral range of 200 GHz is demonstrated. The generation of eight‐wavelength‐paired photon pairs is ensured in a wavelength range of 25.6 nm. With device optimization and noise‐rejecting filters, this source enables the generation of heralded single‐photons at a rate of 62 kHz with gh(2)(0)=0.014±0.001$g^{(2)}_{\text{h}}(0)=0.014\pm 0.001$ and the generation of energy‐time entangled photons with a visibility of 99.39±0.45%$99.39\pm 0.45\%$ in the Franson interferometer. These results, at room temperature and telecom wavelength, in a CMOS‐compatible platform, represent an important step toward integrated quantum photonic devices, which pave the way for realizing a large‐scale quantum network. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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