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- Title
Multi‐Wavelength Quantum Light Sources on Silicon Nitride Micro‐Ring Chip.
- Authors
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; Zhou, Qiang
- 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.
- Subjects
PHOTONS; SILICON nitride; PHOTON pairs; LIGHT sources; NITRIDES; WAVELENGTHS; SINGLE photon generation
- Publication
Laser & Photonics Reviews, 2023, Vol 17, Issue 10, p1
- ISSN
1863-8880
- Publication type
Article
- DOI
10.1002/lpor.202300172