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Fusion-based quantum computation

Author

Listed:
  • Sara Bartolucci

    (PsiQuantum)

  • Patrick Birchall

    (PsiQuantum)

  • Hector Bombín

    (PsiQuantum)

  • Hugo Cable

    (PsiQuantum)

  • Chris Dawson

    (PsiQuantum)

  • Mercedes Gimeno-Segovia

    (PsiQuantum)

  • Eric Johnston

    (PsiQuantum)

  • Konrad Kieling

    (PsiQuantum)

  • Naomi Nickerson

    (PsiQuantum)

  • Mihir Pant

    (PsiQuantum)

  • Fernando Pastawski

    (PsiQuantum)

  • Terry Rudolph

    (PsiQuantum)

  • Chris Sparrow

    (PsiQuantum)

Abstract

The standard primitives of quantum computing include deterministic unitary entangling gates, which are not natural operations in many systems including photonics. Here, we present fusion-based quantum computation, a model for fault tolerant quantum computing constructed from physical primitives readily accessible in photonic systems. These are entangling measurements, called fusions, which are performed on the qubits of small constant sized entangled resource states. Probabilistic photonic gates as well as errors are directly dealt with by the quantum error correction protocol. We show that this computational model can achieve a higher threshold than schemes reported in literature. We present a ballistic scheme which can tolerate a 10.4% probability of suffering photon loss in each fusion, which corresponds to a 2.7% probability of loss of each individual photon. The architecture is also highly modular and has reduced classical processing requirements compared to previous photonic quantum computing architectures.

Suggested Citation

  • Sara Bartolucci & Patrick Birchall & Hector Bombín & Hugo Cable & Chris Dawson & Mercedes Gimeno-Segovia & Eric Johnston & Konrad Kieling & Naomi Nickerson & Mihir Pant & Fernando Pastawski & Terry Ru, 2023. "Fusion-based quantum computation," Nature Communications, Nature, vol. 14(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-36493-1
    DOI: 10.1038/s41467-023-36493-1
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    References listed on IDEAS

    as
    1. Mihir Pant & Don Towsley & Dirk Englund & Saikat Guha, 2019. "Percolation thresholds for photonic quantum computing," Nature Communications, Nature, vol. 10(1), pages 1-11, December.
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    Cited by:

    1. Axel M. Eriksson & Théo Sépulcre & Mikael Kervinen & Timo Hillmann & Marina Kudra & Simon Dupouy & Yong Lu & Maryam Khanahmadi & Jiaying Yang & Claudia Castillo-Moreno & Per Delsing & Simone Gasparine, 2024. "Universal control of a bosonic mode via drive-activated native cubic interactions," Nature Communications, Nature, vol. 15(1), pages 1-9, December.
    2. Terry Rudolph & Shashank Soyuz Virmani, 2023. "The two-qubit singlet/triplet measurement is universal for quantum computing given only maximally-mixed initial states," Nature Communications, Nature, vol. 14(1), pages 1-8, December.

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