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Volume 18 Issue 7, July 2022

The sound of a qubit

Mechanical resonators combined with superconducting circuits are a promising platform for controlling non-classical mechanical states. Here, this platform is used to directly measure the parity of a motional quantum state.

See von Lüpke et al. and Navarathna and Bowen

Image: Uwe von Lüpke, ETH Zürich. Cover Design: Amie Fernandez

Editorial

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Comment

  • As we celebrate the ten-year anniversary of the discovery of the Higgs boson, CERN’s Director-General at that time reminisces about the years leading up to this milestone.

    • Rolf-Dieter Heuer
    Comment
  • Emerging quantum technologies pose new measurement challenges, but also offer previously unknown measurement solutions. National metrology institutes are playing a leading role in this fast evolving world.

    • Alexander Tzalenchuk
    • Nicolas Spethmann
    • Barbara L. Goldstein
    Comment
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Thesis

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Books & Arts

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News & Views

  • The appearance of small local gaps in the electronic band structure of a topological semimetal is attributed to a hidden quasi-symmetry that produces a large Berry curvature.

    • Marc A. Wilde
    • Christian Pfleiderer
    News & Views
  • The hunt for new particles helps to complete our understanding of hadronic matter. The LHCb Collaboration now reports the surprising observation of a doubly charmed tetraquark.

    • Zhiqing Liu
    News & Views
  • Quantum waves can have stronger correlations than classical ones because of their particle nature. This effect has now been observed using quantum sound waves travelling in an acoustic waveguide.

    • H. Yamaguchi
    • D. Hatanaka
    News & Views
  • Quantum computing operations are realized using acoustic devices, paving the way for a new type of quantum processor.

    • Amy Navarathna
    • Warwick P. Bowen
    News & Views
  • Analysis of the anisotropy of the magnetic excitations in the nematic state of an iron-based superconductor suggests that this phase is driven primarily by spin fluctuations.

    • Laura Fanfarillo
    News & Views
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Perspectives

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Letters

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Articles

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Amendments & Corrections

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Measure for Measure

  • The impact of legal metrology often remains unnoticed in our everyday lives. Pavel Klenovsky, Marc Wouters and Wilfried de Waal instruct us in trade and legal regulations.

    • Pavel Klenovsky
    • Marc Wouters
    • Wilfried de Waal
    Measure for Measure
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