Advanced materials are characterized by complex mathematical properties such as the topology and geometry of quantum states. This work demonstrates that in some systems, the evolution of a particle’s spatial distribution is a direct measure of these properties: the relative displacement in two sublattices is found to be given by the quantum metric.

In many quantum materials, different electronic phases can coexist or compete with one another. In this work uniaxial pressure is used to achieve the spatial distribution of charge order that maximizes the superconducting transition temperature.

The ionization via high-intensity X-ray irradiation can cause structural rearrangements within the sample. The authors observe a new structure in ionized liquid water emerging within few femtoseconds from the initial ionization, characterized via a peculiar partial order on a length scale much longer than normally found in water.

Quiescent galaxies have similar amount of cool gas to star forming galaxies, yet why galaxies stop forming stars remains an open question. The authors investigate why passive galaxies remain quiescent using a gravitationally lensed background galaxy to probe the faint, diffuse cool gas around a massive quiescent galaxy, and use lensing configuration to constrain the total mass and geometry of this gas reservoir.

The evolution of X-ray transient absorption signal in studies of ultrafast molecular dynamics is controlled by the shapes of potential energy surfaces of the associated core-excited states. The authors use experiment and theory to measure the slopes of potential energy surfaces for excitations out of the C 1s and Cl 2p shells to valence antibonding orbitals in CCl₄

Silicon photonics can be used to create high-speed large-scale neuromorphic systems for artificial intelligent tasks. Here, the authors discuss the design details and behavior of a resonator spiking neuron that can be fabricated in a commercial silicon photonics foundry process.

A class of urn-based models accounts for stochastic regularities observed in systems that exhibit innovation in diverse forms and temporal scales, from the appearance of new organisms to the evolution of language to daily new experiences. The authors investigate the predictive power of those models in inference problems, addressing the authorship attribution task as a case study.

Collectively moving cellular systems often contain both motile and non-motile genotypes, and when mixed, these agents segregate spontaneously. The study reveals that the segregation of topological charges between these agents depends on activity and interfacial tension, with high activity and low tension favoring a positively charged motile phase.

Significant efforts have been dedicated to mitigate gate errors in quantum devices, while comparatively little attention has been given to the increasing issue of readout errors. The authors present an explicit protocol for comprehensive readout error mitigation with quantum state tomography, and demonstrate its applicability experimentally on a superconducting qubit device.

Bound states in the continuum (BICs) have been extensively investigated in single-particle systems, leading to diverse applications in photonics, acoustics, and other classical-wave systems. Here, the authors propose a type of interaction-induced many-body BICs at boundaries and experimentally simulate these boundary many-body BICs using nonlinear circuit networks.

Point gap is signature of non-Hermitian systems, but the experimental identification of nontrivial point gaps is elusive. Here, the authors use a Weyl phononic crystal to demonstrate that the point gap constituted by bulk and Fermi-arc surface states can be observed experimentally by a real-space field mapping technique and discover various skin effects and their evolutions.

Flux ropes are fundamental structures that govern much of the dynamics in astrophysical and space plasmas. The authors show how out-of-equilibrium processes can form small-scale flux ropes and compare them to simulations and spacecraft observations.

Ultrafast relativistic plasma instabilities accompany and influence laser matter interactions that accelerate particlebeams with potential applications in e.g radiotherapy or fussion fast ignition scenarios. Here, the authors use Small Angle X-ray Scattering to observe such instabilities on a femtosecond, tens of nanometer scale in solids, and draw conclusions on the underlying plasma dynamics.