Journal
LIGHT-SCIENCE & APPLICATIONS
Volume 8, Issue -, Pages -Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/s41377-019-0153-y
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Funding
- National Natural Science Foundation of China (NSFC) [61590932, 11774333, 61431166001]
- National Science Fund for Distinguished Young Scholars [61725503]
- Anhui Initiative in Quantum Information Technologies [AHY130300]
- Strategic Priority Research Program of the Chinese Academy of Sciences [XDB24030601]
- National Key RD Program [2016YFA0301700]
- Zhejiang Provincial Natural Science Foundation of China [LZ18F050001]
- Fundamental Research Funds for the Central Universities
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Multiphoton quantum states play a critical role in emerging quantum technologies and greatly improve our fundamental understanding of the quantum world. Integrated photonics is well recognized as an attractive technology offering great promise for the generation of photonic quantum states with high-brightness, tunability, stability, and scalability. Herein, we demonstrate the generation of multiphoton quantum states using a single-silicon nanophotonic waveguide. The detected four-photon rate reaches 0.34 Hz even with a low-pump power of 600 mu W. This multiphoton quantum state is also qualified with multiphoton quantum interference, as well as quantum state tomography. For the generated four-photon states, the quantum interference visibilities are greater than 95%, and the fidelity is 0.78 +/- 0.02. Furthermore, such a multiphoton quantum source is fully compatible with the on-chip processes of quantum manipulation, as well as quantum detection, which is helpful for the realization of large-scale quantum photonic integrated circuits (QPICs) and shows great potential for research in the area of multiphoton quantum science.
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