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  • The realization of ultracold molecules in higher bands of an optical lattice sets the stage for the study of the interplay between orbital physics and the Bose–Einstein condensation and Bardeen–Cooper–Schrieffer superfluidity crossover.

    • Yann Kiefer
    • Max Hachmann
    • Andreas Hemmerich
    Article Open Access
  • Measurements on a single artificial atom—a quantum dot—coupled to an optical cavity show scattering dynamics that depend on the number of photons involved in the light–matter interaction, which is a signature of stimulated emission.

    • Natasha Tomm
    • Sahand Mahmoodian
    • Richard J. Warburton
    Article Open Access
  • Solid-state systems are established candidates to study models of many-body physics but have limited control and readout capabilities. Ensembles of defects in diamond may provide a solution for studying dipolar systems.

    • E. J. Davis
    • B. Ye
    • N. Y. Yao
    Article Open Access
  • It is very challenging to model hydrogen at high pressures and low temperatures because quantum effects become significant. A state-of-the-art numerical study shows that these effects cause important changes to the predicted phase diagram.

    • Lorenzo Monacelli
    • Michele Casula
    • Francesco Mauri
  • The observation of band structure features typical of the kagome lattice in FeGe suggests that an interplay of magnetism and electronic correlations determines the physics of this material.

    • Xiaokun Teng
    • Ji Seop Oh
    • Ming Yi
  • Observations of the Schwinger effect—the creation of matter by electric fields—have been hindered by the high required field strength. A mesoscopic variant of the Schwinger effect has now been realized in graphene transistors.

    • A. Schmitt
    • P. Vallet
    • B. Plaçais
    Article Open Access
  • Switching of magnetic behaviour is one of the main ideas that drives spintronics. Now, magnetic switching via spin-orbit torque is shown in a moiré bilayer, introducing a platform for spintronic applications.

    • C. L. Tschirhart
    • Evgeny Redekop
    • A. F. Young
  • It has been predicted that Josephson junction devices could produce quantized currents in analogy to the Shapiro steps of voltage used to define the voltage standard. These dual Shapiro steps have now been observed in a Josephson junction array.

    • Nicolò Crescini
    • Samuel Cailleaux
    • Nicolas Roch
  • Quantum turbulence typically entails reconnecting quantized vortices as seen in quantum fluids. Experiments with superfluid helium now show turbulent dynamics with negligible vortex reconnection, a regime dominated by interacting vortex waves at all length scales.

    • J. T. Mäkinen
    • S. Autti
    • V. B. Eltsov
    Article Open Access
  • The calcium isotope 41Ca is a promising candidate to complement dating methods relying on radiocarbon. Small levels of 41Ca can be measured with atom-trap trace analysis, which brings the use of 41Ca a step closer to applications.

    • T.-Y. Xia
    • W.-W. Sun
    • Z.-T. Lu
  • The scalability of quantum information processing applications is generally hindered by loss and inefficient preparation and detection. A minimal loss network based on phonons has now been realized with trapped ions.

    • Wentao Chen
    • Yao Lu
    • Kihwan Kim
  • A bursting bubble produces a jet drop previously estimated to be too large to contribute to aerosolization. Oil-coated bubbles produce fast and thin jets, which break up into much smaller drops with potential implications for airborne transmission.

    • Zhengyu Yang
    • Bingqiang Ji
    • Jie Feng
  • Ultrafast photon–electron spectroscopy commonly requires a driving laser. Now, an inverse approach based on cathodoluminescence spectroscopy has allowed a compact solution to spectral interferometry inside an electron microscope, without a laser.

    • Masoud Taleb
    • Mario Hentschel
    • Nahid Talebi
    Article Open Access