Measurements of Landau level gaps as a function of magnetic field and carrier density provide a new framework for understanding exchange interactions and their density dependence.

A control framework for systems of interacting “qudits”—the multilevel equivalent of a qubit—demonstrates an order-of-magnitude improvement in qudit coherence times over the state of the art.

New protocols for manipulating bosonic quantum bits offer a promising avenue toward scalable and robust quantum computation with such qubits.

Previous work suggested the superconductor CsV${}_3$Sb${}_5$ may host a rare type of nematicity, or breaking of its crystalline rotational symmetry. New comprehensive measurements of its elastoresistivity and elastocaloric effect show this is probably not the case.

A framework for comparing ensemble properties of eigenstates in local quantum systems with those of pure random states captures correlations not encoded by the standard random-matrix-theory description of quantum chaos.

Measurements uncover the precise magnetic structures in EuIn${}_2$As${}_2$, a key step toward manipulating the material to host sought-after topological states.

Molecular dynamics simulations show that the dynamics of a cooling glass are very different from those of a heating glass, implying the lack of a phase transition between poorly and well-annealed glass.

A new theory that accounts for disorder in a protein’s structure sheds light on the development inside a cell of tiny droplets that are vital to a cell’s function.

Analysis of some open quantum systems can lead to negative measurement probabilities. A new method for remedying this issue avoids the limitations of existing techniques.

A machine-learning framework predicts when a complex system, such as an ecosystem or a power grid, will undergo a critical transition.

As originally conceived, flocking emerges through alignment interactions among self-propelled agents. New experiments and theory reveal that flocking can also emerge through interactions that turn agents away from each other.

Observations of unique excitons in a kind of 2D magnet reveal their origin—magnetic nickel ions—and their diffusive nature, suggesting a novel mechanism for controlling exciton properties.

A new numerical method provides upper and lower bounds on arbitrary ground-state observables for many-body quantum systems.

The creation and exploration of incredibly complex mazes on infinitely large irregular structures that describe quasicrystals could lead to efficiency boosts in industrial processes, among many other applications.

A technique for trapping atoms on a nanophotonic microring circuit paves the way for interfacing cold atoms with integrated nanophotonics, enabling further explorations of atom-light interactions.

A quantum error-correcting code known as the XY surface code loses some of its ability to tolerate errors when states are prepared and measured. A new method of preparation and measurement mitigates this loss.

The use of Raman sideband cooling to cool trapped polar molecules to their motional ground state sets the stage for engineering the dipole-dipole interactions of such molecules to process quantum information.

A hierarchical model of high-dimensional data reveals how deep neural networks leverage their multiple layers to reduce the data dimensionality and learn from a finite set of examples.

Given the symmetry properties of a quantum material, a new systematic framework can classify all the types of topological quantum spin liquids that can be realized in that material.

A field theory to describe systems driven out of thermal equilibrium hints at several unusual behaviors, such as time crystalline order, that could not exist in equilibrium yet can be realized rather simply.

A liquid-like spreading of metal atoms on a topological material can generate a superconductor—one that might benefit quantum computing.

A simple model based on network theory can reproduce the complex structures seen in urban transportation networks.

The quantized transport of particles usually requires sliding two lattices, which is difficult to do precisely. A new method realizes such a “Thouless pump” by instead tuning interparticle interactions.

Measurements of the electronic band structure in CeRh${}_2$As${}_2$ reveal coexisting features that may provide insight into its unusual, complex phase diagram.

The abrupt onset of electrical breakdown could serve as a unique “smoking gun” bit of evidence of elusive excitonic insulator states: insulators that originate from electron-hole pairings.