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On-chip coherent conversion of photonic quantum entanglement between different degrees of freedom

Author

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  • Lan-Tian Feng

    (Key Laboratory of Quantum Information, University of Science and Technology of China, CAS
    Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China)

  • Ming Zhang

    (State Key Laboratory for Modern Optical Instrumentation, Centre for Optical and Electromagnetic Research, Zhejiang Provincial Key Laboratory for Sensing Technologies, Zhejiang University)

  • Zhi-Yuan Zhou

    (Key Laboratory of Quantum Information, University of Science and Technology of China, CAS
    Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China)

  • Ming Li

    (Key Laboratory of Quantum Information, University of Science and Technology of China, CAS
    Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China)

  • Xiao Xiong

    (Key Laboratory of Quantum Information, University of Science and Technology of China, CAS
    Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China)

  • Le Yu

    (Key Laboratory of Quantum Information, University of Science and Technology of China, CAS
    Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China)

  • Bao-Sen Shi

    (Key Laboratory of Quantum Information, University of Science and Technology of China, CAS
    Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China)

  • Guo-Ping Guo

    (Key Laboratory of Quantum Information, University of Science and Technology of China, CAS
    Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China)

  • Dao-Xin Dai

    (State Key Laboratory for Modern Optical Instrumentation, Centre for Optical and Electromagnetic Research, Zhejiang Provincial Key Laboratory for Sensing Technologies, Zhejiang University)

  • Xi-Feng Ren

    (Key Laboratory of Quantum Information, University of Science and Technology of China, CAS
    Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China)

  • Guang-Can Guo

    (Key Laboratory of Quantum Information, University of Science and Technology of China, CAS
    Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China)

Abstract

In the quantum world, a single particle can have various degrees of freedom to encode quantum information. Controlling multiple degrees of freedom simultaneously is necessary to describe a particle fully and, therefore, to use it more efficiently. Here we introduce the transverse waveguide-mode degree of freedom to quantum photonic integrated circuits, and demonstrate the coherent conversion of a photonic quantum state between path, polarization and transverse waveguide-mode degrees of freedom on a single chip. The preservation of quantum coherence in these conversion processes is proven by single-photon and two-photon quantum interference using a fibre beam splitter or on-chip beam splitters. These results provide us with the ability to control and convert multiple degrees of freedom of photons for quantum photonic integrated circuit-based quantum information process.

Suggested Citation

  • Lan-Tian Feng & Ming Zhang & Zhi-Yuan Zhou & Ming Li & Xiao Xiong & Le Yu & Bao-Sen Shi & Guo-Ping Guo & Dao-Xin Dai & Xi-Feng Ren & Guang-Can Guo, 2016. "On-chip coherent conversion of photonic quantum entanglement between different degrees of freedom," Nature Communications, Nature, vol. 7(1), pages 1-7, September.
    • Handle: RePEc:nat:natcom:v:7:y:2016:i:1:d:10.1038_ncomms11985
    DOI: 10.1038/ncomms11985
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    Cited by:

    1. Yulin Chi & Jieshan Huang & Zhanchuan Zhang & Jun Mao & Zinan Zhou & Xiaojiong Chen & Chonghao Zhai & Jueming Bao & Tianxiang Dai & Huihong Yuan & Ming Zhang & Daoxin Dai & Bo Tang & Yan Yang & Zhihua, 2022. "A programmable qudit-based quantum processor," Nature Communications, Nature, vol. 13(1), pages 1-10, December.

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