Quantum logic AND gates

January issue

This month we find out how to make quantum AND gates, determine the transparency of the Milky Way to cosmic anti-3He nuclei, and show how magnetic tweezers enable new experiments in protein folding.

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  • Complex optics insight

    Disorder and mode interactions are often treated as sources of noise, but can shape the flow of light in interesting and useful ways. This Insight reviews the fundamental physics and broad applications of optics in disordered and multimodal media.

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  • The presence of small thermal regions in a many-body localized system could lead to its delocalization. An experiment with cold atoms now monitors the delocalization induced by the coupling of a many-body localized region with a thermal bath.

    • Julian Léonard
    • Sooshin Kim
    • Markus Greiner
    Letter
  • By combining energy recovery technology and a multi-turn accelerating scheme in a linear accelerator, high-power beams can be achieved with considerably reduced energy consumption.

    • Felix Schliessmann
    • Michaela Arnold
    • Simon Weih
    Article
  • The ultrafast structural dynamics in 2D perovskites are an important part of their non-equilibrium properties. Now, their visualization reveals a light-induced reduction in the antiferro-distortion initiated by the electron–hole plasma.

    • Hao Zhang
    • Wenbin Li
    • Aditya D. Mohite
    Article
  • The concept of quasiparticles helps to describe various quantum phenomena in solids. It is now shown that certain properties of a classical system of hydrodynamically interacting particles can also be described by means of quasiparticles.

    • Imran Saeed
    • Hyuk Kyu Pak
    • Tsvi Tlusty
    Article
  • In two-dimensional systems, swapping the position of two indistinguishable particles twice—braiding them—reveals their exchange statistics. Now, a Mach–Zehnder interferometer accomplishes this for anyonic fractional quantum Hall states.

    • Hemanta Kumar Kundu
    • Sourav Biswas
    • Moty Heiblum
    Article
    • Tides not only affect ocean dynamics but also influence the Earth’s magnetosphere. Satellite observations have now revealed evidence of tidal effects in the Earth’s plasmasphere correlated with Moon phases.

      • Balázs Heilig
      News & Views
    • By recovering energy from a relativistically accelerated electron beam in a multiturn configuration, a reduction of radiofrequency power has been demonstrated. This is a milestone toward more efficient and better performing accelerators.

      • Peter Williams
      News & Views
    • Reconstructing the motional quantum states of massive particles has important implications for quantum information science. Motional tomography of a single atom in an optical tweezer has now been demonstrated.

      • Hannes Bernien
      News & Views
    • Long-theorized, non-dispersive de Broglie wave packets have been optically synthesized using classically entangled ring-shaped space-time wave packets in a medium exhibiting anomalous dispersion.

      • Mbaye Diouf
      • Joshua A. Burrow
      • Kimani C. Toussaint Jr.
      News & Views
    • In proton–proton collisions, the CMS Collaboration measures the simultaneous production of three particles, each consisting of a charm quark and a charm antiquark, which yields insights into how the proton’s constituents interact.

      • Jonathan Gaunt
      News & Views
Feynman diagrams that contribute to the production of the Higgs boson form the number ten.

The Higgs boson discovery turns ten

The discovery of the Higgs boson was announced ten years ago on the 4th of July 2012 — an event that substantially advanced our understanding of the origin of elementary particles’ masses.
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