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Quantum-enhanced radiometry via approximate quantum error correction

Author

Listed:
  • W. Wang

    (Institute for Interdisciplinary Information Sciences, Tsinghua University)

  • Z.-J. Chen

    (University of Science and Technology of China)

  • X. Liu

    (Institute for Interdisciplinary Information Sciences, Tsinghua University)

  • W. Cai

    (Institute for Interdisciplinary Information Sciences, Tsinghua University)

  • Y. Ma

    (Institute for Interdisciplinary Information Sciences, Tsinghua University)

  • X. Mu

    (Institute for Interdisciplinary Information Sciences, Tsinghua University)

  • X. Pan

    (Institute for Interdisciplinary Information Sciences, Tsinghua University)

  • Z. Hua

    (Institute for Interdisciplinary Information Sciences, Tsinghua University)

  • L. Hu

    (Institute for Interdisciplinary Information Sciences, Tsinghua University)

  • Y. Xu

    (Institute for Interdisciplinary Information Sciences, Tsinghua University)

  • H. Wang

    (Institute for Interdisciplinary Information Sciences, Tsinghua University)

  • Y. P. Song

    (Institute for Interdisciplinary Information Sciences, Tsinghua University)

  • X.-B. Zou

    (University of Science and Technology of China)

  • C.-L. Zou

    (University of Science and Technology of China)

  • L. Sun

    (Institute for Interdisciplinary Information Sciences, Tsinghua University)

Abstract

Quantum sensing based on exotic quantum states is appealing for practical metrology applications and fundamental studies. However, these quantum states are vulnerable to noise and the resulting quantum enhancement is weakened in practice. Here, we experimentally demonstrate a quantum-enhanced sensing scheme with a bosonic probe, by exploring the large Hilbert space of the bosonic mode and developing both the approximate quantum error correction and the quantum jump tracking approaches. In a practical radiometry scenario, we attain a 5.3 dB enhancement of sensitivity, which reaches 9.1 × 10−4 Hz−1/2 when measuring the excitation population of a receiver mode. Our results demonstrate the potential of quantum sensing with near-term quantum technologies, not only shedding new light on the quantum advantage of sensing, but also stimulating further efforts on bosonic quantum technologies.

Suggested Citation

  • W. Wang & Z.-J. Chen & X. Liu & W. Cai & Y. Ma & X. Mu & X. Pan & Z. Hua & L. Hu & Y. Xu & H. Wang & Y. P. Song & X.-B. Zou & C.-L. Zou & L. Sun, 2022. "Quantum-enhanced radiometry via approximate quantum error correction," Nature Communications, Nature, vol. 13(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-30410-8
    DOI: 10.1038/s41467-022-30410-8
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    References listed on IDEAS

    as
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