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Experimental perfect state transfer of an entangled photonic qubit

Author

Listed:
  • Robert J. Chapman

    (Quantum Photonics Laboratory, School of Engineering, RMIT University
    School of Physics, The University of Sydney)

  • Matteo Santandrea

    (Istituto di Fotonica e Nanotecnologie, Consiglio Nazionale delle Ricerche
    Politecnico di Milano)

  • Zixin Huang

    (Quantum Photonics Laboratory, School of Engineering, RMIT University
    School of Physics, The University of Sydney)

  • Giacomo Corrielli

    (Istituto di Fotonica e Nanotecnologie, Consiglio Nazionale delle Ricerche
    Politecnico di Milano)

  • Andrea Crespi

    (Istituto di Fotonica e Nanotecnologie, Consiglio Nazionale delle Ricerche
    Politecnico di Milano)

  • Man-Hong Yung

    (South University of Science and Technology of China)

  • Roberto Osellame

    (Istituto di Fotonica e Nanotecnologie, Consiglio Nazionale delle Ricerche
    Politecnico di Milano)

  • Alberto Peruzzo

    (Quantum Photonics Laboratory, School of Engineering, RMIT University
    School of Physics, The University of Sydney)

Abstract

The transfer of data is a fundamental task in information systems. Microprocessors contain dedicated data buses that transmit bits across different locations and implement sophisticated routing protocols. Transferring quantum information with high fidelity is a challenging task, due to the intrinsic fragility of quantum states. Here we report on the implementation of the perfect state transfer protocol applied to a photonic qubit entangled with another qubit at a different location. On a single device we perform three routing procedures on entangled states, preserving the encoded quantum state with an average fidelity of 97.1%, measuring in the coincidence basis. Our protocol extends the regular perfect state transfer by maintaining quantum information encoded in the polarization state of the photonic qubit. Our results demonstrate the key principle of perfect state transfer, opening a route towards data transfer for quantum computing systems.

Suggested Citation

  • Robert J. Chapman & Matteo Santandrea & Zixin Huang & Giacomo Corrielli & Andrea Crespi & Man-Hong Yung & Roberto Osellame & Alberto Peruzzo, 2016. "Experimental perfect state transfer of an entangled photonic qubit," Nature Communications, Nature, vol. 7(1), pages 1-7, September.
    • Handle: RePEc:nat:natcom:v:7:y:2016:i:1:d:10.1038_ncomms11339
    DOI: 10.1038/ncomms11339
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    Cited by:

    1. Yang Yang & Robert J. Chapman & Ben Haylock & Francesco Lenzini & Yogesh N. Joglekar & Mirko Lobino & Alberto Peruzzo, 2024. "Programmable high-dimensional Hamiltonian in a photonic waveguide array," Nature Communications, Nature, vol. 15(1), pages 1-7, December.

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