Generation of multiphoton quantum states on silicon

Ming Zhang; Lan-Tian Feng; Zhi-Yuan Zhou; Yang Chen; Hao Wu; Ming Li; Shi-Ming Gao; Guo-Ping Guo; Guang-Can Guo; Dao-Xin Dai; Xi-Feng Ren

doi:10.1038/s41377-019-0153-y

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Generation of multiphoton quantum states on silicon

Article

- Generation of multiphoton quantum states on silicon
- Light: Science & Applications Vol. 8, Issue 3, Pages: 384-390(2019)
- Affiliations：
  
  1.State Key Laboratory for Modern Optical Instrumentation, Centre for Optical and Electromagnetic Research, Zhejiang Provincial Key Laboratory for Sensing Technologies, College of Optical Science and Engineering, Zhejiang University, Zijingang Campus, Hangzhou, 310058, China
  2.Ningbo Research Institute, Zhejiang University, Ningbo, 315100, China
  3.Key Laboratory of Quantum Information, CAS, University of Science and Technology of China, Hefei, Anhui, 230026, China
  4.Synergetic Innovation Center of Quantum Information & Quantum Physics, University of Science and Technology of China, Hefei, Anhui, 230026, China
- Author bio：
  
  Dao-Xin Dai (dxdai@zju.edu.cn)
  Xi-Feng Ren (renxf@ustc.edu.cn)
- Funds：
- DOI：10.1038/s41377-019-0153-y
  CLC：
- Published：2019，
  
  Published Online：01 May 2019，
  
  Received：18 September 2018，
  
  Revised：27 March 2019，
  
  Accepted：04 April 2019
- Accepted：
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Zhang, M. et al. Generation of multiphoton quantum states on silicon. Light: Science & Applications, 8, 384-390 (2019).
DOI：

Zhang, M. et al. Generation of multiphoton quantum states on silicon. Light: Science & Applications, 8, 384-390 (2019). DOI： 10.1038/s41377-019-0153-y.

摘要

Abstract

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 μW. 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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references

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