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Overcoming resolution limits with quantum sensing

Author

Listed:
  • T. Gefen

    (The Hebrew University of Jerusalem)

  • A. Rotem

    (The Hebrew University of Jerusalem)

  • A. Retzker

    (The Hebrew University of Jerusalem)

Abstract

The field of quantum sensing explores the use of quantum phenomena to measure a broad range of physical quantities, of both static and time-dependent types. While for static signals the main figure of merit is sensitivity, for time dependent signals it is spectral resolution, i.e. the ability to resolve two different frequencies. Here we study this problem, and develop new superresolution methods that rely on quantum features. We first formulate a general criterion for superresolution in quantum problems. Inspired by this, we show that quantum detectors can resolve two frequencies from incoherent segments of the signal, irrespective of their separation, in contrast to what is known about classical detection schemes. The main idea behind these methods is to overcome the vanishing distinguishability in resolution problems by nullifying the projection noise.

Suggested Citation

  • T. Gefen & A. Rotem & A. Retzker, 2019. "Overcoming resolution limits with quantum sensing," Nature Communications, Nature, vol. 10(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-019-12817-y
    DOI: 10.1038/s41467-019-12817-y
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    Cited by:

    1. Ozgur Sahin & Erica Leon Sanchez & Sophie Conti & Amala Akkiraju & Paul Reshetikhin & Emanuel Druga & Aakriti Aggarwal & Benjamin Gilbert & Sunil Bhave & Ashok Ajoy, 2022. "High field magnetometry with hyperpolarized nuclear spins," Nature Communications, Nature, vol. 13(1), pages 1-9, December.
    2. Mateusz Mazelanik & Adam Leszczyński & Michał Parniak, 2022. "Optical-domain spectral super-resolution via a quantum-memory-based time-frequency processor," Nature Communications, Nature, vol. 13(1), pages 1-12, December.

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