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  • Tensor networks are mathematical structures that efficiently compress the data required to describe quantum systems. An algorithm for the optimal simulation of quantum dynamics based on tensor networks has now been implemented on a trapped-ion processor.

    • Luca Tagliacozzo
    News & Views
  • Attosecond charge migration in a neutral molecule has been observed to decohere within approximately 10 fs. However, this does not mean that the electronic coherence is irreversibly lost, as the charge migration is observed to revive after 40–50 fs. These findings have the potential to enable laser control of photochemical processes.

    Research Briefing
  • This month, we celebrate the fiftieth anniversary of Philip Anderson’s landmark essay ‘More is Different’.

  • Experiments with chiral magnets may hold the key to a better understanding of fundamental aspects of transformations between different skyrmionic states, necessary for magnetic memory and logic applications to become a reality.

    • Alexey A. Kovalev
    News & Views
  • The digital transformation doesn’t stop at metrology as Shanay Rab, Meher Wan and Sanjay Yadav explain.

    • Shanay Rab
    • Meher Wan
    • Sanjay Yadav
    Measure for Measure
  • Stacking monolayer WS2 on top of bilayer WSe2 creates conditions where electrons and holes can coexist in the structure. Their Coulomb interaction allows them to form bound pairs and hence an excitonic insulator state.

    • Dongxue Chen
    • Zhen Lian
    • Su-Fei Shi
  • Long-lived entanglement is a key resource for quantum metrology with optical clocks. Rydberg-based entangling gates within arrays of neutral atoms enable the generation of clock-transition Bell states with high fidelity and long coherence times.

    • Nathan Schine
    • Aaron W. Young
    • Adam M. Kaufman
  • Cilia are composed of cytoskeletal filaments and molecular motors and are characterized by a wave-like motion. Here the authors show that this motion is reconstituted in vitro from the self-assembly of polymerizing actin filaments and myosin motors.

    • Marie Pochitaloff
    • Martin Miranda
    • Pascal Martin
  • The simulation of quantum dynamics is a challenging task to solve with classical resources. An experiment with a trapped-ion quantum processor now shows the efficient simulation of the evolution of large-scale many-body quantum systems.

    • Eli Chertkov
    • Justin Bohnet
    • Michael Foss-Feig
  • Trapped ion quantum computers can use two different kinds of ion to avoid crosstalk between adjacent qubits. Encoding two different qubit types in only one ion species can achieve the same goal while reducing experimental complexity.

    • Cornelius Hempel
    News & Views
  • Measurements of four different infinite-layer nickelates show that magnetic behaviour coexists with superconductivity. This is different from what is seen in cuprates, giving a strong distinction between the two classes of oxide superconductors.

    • Jennifer Fowlie
    • Marios Hadjimichael
    • Andreas Suter