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Volume 16 Issue 11, November 2020

Entanglement unscrambled

Higher-dimensional entanglement between two photons can be preserved for a photon passing through a complex medium by applying an appropriate scrambling operation on the entangled partner that does not enter the complex medium.

See Malik

See Forbes

IMAGE: Saroch Leedumrongwatthanakun and Mehul Malik, Heriot-Watt University. COVER DESIGN: Alex Wing.

Volume 16 Issue 11

Editorial

  • The Nobel Prize in Physics 2020 has been awarded to Roger Penrose for his work on black hole formation, and to Andrea Ghez and Reinhard Genzel for their observation of a supermassive compact object at the Galactic Centre.

    Editorial

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Matters Arising

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Comment

  • Scaling arguments provide valuable analysis tools across physics and complex systems yet are often employed as one generic method, without explicit reference to the various mathematical concepts underlying them. A careful understanding of these concepts empowers us to unlock their full potential.

    • Marc Timme
    • Malte Schröder
    Comment
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Thesis

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Research Highlights

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News & Views

  • A mooted advantage of high-dimensional states is their robustness to noise, yet their fragility in noisy channels has hindered their deployment. A demonstration shows how to exploit entanglement to restore quantum correlations lost in transmission.

    • Andrew Forbes
    • Isaac Nape
    News & Views
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Letters

  • A quasiparticle in Andreev levels was coupled to a superconducting microwave resonator and its spin was monitored in real time. This has potential applications in the readout of superconducting spin qubits and measurements of Majorana fermions.

    • M. Hays
    • V. Fatemi
    • M. H. Devoret
    Letter
  • Thermal transport measurements show that there is a thermal Hall effect in the out-of-plane direction in two cuprates in the pseudogap regime. This indicates that phonons are carrying the heat and that they have a handedness of unknown origin.

    • G. Grissonnanche
    • S. Thériault
    • L. Taillefer
    Letter
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Articles

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Measure for Measure

  • In first-century China, emperor Wang Mang standardized weights and measures in his newly established dynasty. Noa Hegesh tells the story of sound as the basis for this standardization.

    • Noa Hegesh
    Measure for Measure
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