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  • This month, we celebrate the hundredth anniversary of the iconic experiment by Otto Stern and Walther Gerlach — a milestone in the development of quantum mechanics.

    Editorial
  • The use of quantum effects and digital technologies is changing the measurement of electrical power and energy, as explained by Héctor Laiz.

    • Héctor Laiz
    Measure for Measure
  • Recent experiments utilizing strain have shed light on the role of electronic nematicity in determining the properties of unconventional superconductors. This Perspective reviews these developments and discusses open questions.

    • Anna E. Böhmer
    • Jiun-Haw Chu
    • Ming Yi
    Perspective
  • Multidimensional coherent spectroscopy measurements in iron-based superconductors demonstrate how the coupling between a superconductor and strong light pulses can drive the transition into a non-equilibrium superconducting state with distinct collective modes.

    • L. Luo
    • M. Mootz
    • J. Wang
    Article Open Access
  • Spin ices have magnetic moments arranged on a lattice with many possible ground-state configurations. Quantum effects can ‘melt’ the spin ice into a liquid that fails to form static order even at absolute zero despite strong interactions.

    • Vivien S. Zapf
    • Minseong Lee
    • Priscila F. S. Rosa
    News & Views
  • A clever experiment with a photonic circuit has realized three-dimensional non-Abelian quantum behaviour — introducing an experimental testbed for field and gauge theories.

    • Andrew G. White
    News & Views
  • Photonic waveguides with appropriately engineered interactions allow the experimental realization of non-Abelian quantum holonomies of the symmetry group U(3), which is known from the strong nuclear force.

    • Vera Neef
    • Julien Pinske
    • Alexander Szameit
    Letter Open Access
  • The Luttinger liquid is a theoretical concept used to describe interacting fermions in a 1D system. Now it is shown that the model also describes electron physics in η-Mo4O11, a quasi-2D material in which 1D chains cross each other.

    • X. Du
    • L. Kang
    • L. X. Yang
    Letter
  • Manipulating the chirality of electron vortices using attosecond metrology allows the clocking of continuum–continuum transitions, bringing the dream of time-resolved quantum physics a little closer.

    • Jean Marcel Ngoko Djiokap
    News & Views
  • Elasticity-driven synchronization in active solids has been predicted theoretically and was recently realized in a synthetic system. A biological realization is now demonstrated in a bacterial biofilm.

    • Japinder Nijjer
    • Tal Cohen
    • Jing Yan
    News & Views
  • The performance of computing devices is determined by the implementation of logical operations at the hardware level. A quantum AND gate designed using three energy levels of a superconducting circuit may speed up quantum computing algorithms.

    • Zhang Jiang
    News & Views
  • Attosecond circular-dichroism chronoscopy—a spectroscopy technique that employs two circularly polarized pulses in co-rotating and counter-rotating geometries—can measure the amplitudes and phases of continuum–continuum transitions in electron vortices.

    • Meng Han
    • Jia-Bao Ji
    • Hans Jakob Wörner
    Article
  • There is an urgent need to rethink the Nobel Prize in Physics in the light of the climate crisis. As expressed by its founder, the award should acknowledge research that addresses pressing challenges for humanity.

    • Doris Vollmer
    • Roland J.-R. Bednarz
    • Beatrice Bednarz
    Comment