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  • Disturbances in the orientation of magnetization in a magnet can propagate as spin waves or magnons. A design that makes it possible to optically excite nanoscale spin waves offers a route to developing miniaturized spin-based devices.

    • Akashdeep Kamra
    • Lina G. Johnsen
    News & Views
  • Adatoms on the surface of silicon can create two-dimensional superconductivity, the order parameter symmetry of which is currently not known. Now, evidence suggests it might be a topological chiral d-wave state.

    • F. Ming
    • X. Wu
    • H. H. Weitering
  • The protein VASP can undergo liquid–liquid phase separation. The interplay between the surface tension of the VASP droplet and actin polymerization controls the bundling of actin filaments, a necessary step for many cellular processes.

    • Kristin Graham
    • Aravind Chandrasekaran
    • Jeanne C. Stachowiak
  • 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
  • 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
  • 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
  • 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
  • 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
  • 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
  • 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
  • A tomography protocol that exploits the control offered by optical tweezers allows the reconstruction of motional states of a single trapped atom. This has implications for the study of non-classical states of massive trapped and levitated particles.

    • M. O. Brown
    • S. R. Muleady
    • C. A. Regal
  • A formal analysis of the physical limits of entanglement manipulation shows that it cannot be done reversibly, highlighting an important difference from thermodynamics.

    • Ludovico Lami
    • Bartosz Regula
    Article Open Access
  • Dynamic and disordered media destroy the correlations that underlie many quantum measurement protocols and applications. However, coherently backscattered photons can remain partially correlated due to interference between scattering trajectories.

    • Mamoon Safadi
    • Ohad Lib
    • Yaron Bromberg