A 2018 experiment suggested that muon neutrinos quantum-mechanically flip into electron neutrinos more frequently than predicted, possibly because of new flavors of neutrinos. Now a follow-up experiment with a different design excludes that explanation.

Researchers have observed electrons changing places in a chemical reaction on the timescale of the electrons’ movement: a few hundred femtoseconds. The findings provide an intuitive view of how electron dynamics influence chemical reactions.

Dark matter particles with masses below around 1 MeV are not ruled out by astronomical observations, but they are difficult to detect. Researchers have now explored this mass range with a new device, a superconducting nanowire single-photon detector.

A particle's de Broglie wavelength is inversely proportional to its mass: The bigger a particle is, the smaller its wave-function. Researchers have trapped a silica nanoparticle and measured the width of its wave-function to be just 73 picometers.

Researchers have predicted that bound pairs of tiny vortices—skyrmions—in coupled ferromagnetic layers can mimic active-matter systems. The behavior might encourage nonconventional and bioinspired computing devices based on manipulating skyrmions.

Researchers have shown how to dispense with barrier gates—a type of electrode that was thought to be needed to connect every neighboring pair of quantum dot qubits. The approach could increase the numbers of qubits on a chip.

Researchers asked AI to solve the questions from last year's German Physics Olympiad. The AI did better than the average student. Should we now embrace AI as a cornerstone of future physics learning and teaching?

Magnetic topological insulators carry surface currents that are expected to flow without dissipation. Now researchers have found that, contrary to expectations, the currents remain even after quantized conductivity breaks down.

Researchers have used AI to help move thousands of trapped, cold atoms into any arrangement in just 60 milliseconds. To demonstrate that ability, they created an animation of Schrödinger’s cat.

Researchers have uncovered evidence that at room temperature and a pressure of 12–18 gigapascals, solid oxygen harbors a fluctuating state in which electron spins are entangled—a state known in other contexts as a quantum spin liquid.

Researchers have demonstrated a new type of NMR. Among its anticipated applications are new schemes for enhancing sensitivity of NMR of one element by irradiating an isotope of another element.

Researchers can now detect single ballistic electrons with picosecond resolution. The ability to sense individual ballistic electrons, which move through a material without scattering, is useful for applications in quantum science and electron optics.

Many quantum technologies involve microwave signals shuttling between various components that operate only in specific frequency ranges. Now researchers have demonstrated a device that offers high conversion efficiency across a broad frequency range.

Parrondo’s paradox combines two losing strategies into a winning one. Researchers have proposed a way to harness Parrondo’s paradox for cancer treatment, combining two therapeutic strategies into one that might be more powerful in specific situations.

The largest source of error in an Optical lattice clock (OLC) comes from ubiquitous ambient blackbody radiation (BBR). Now researchers have demonstrated a cryogenic OLC with a radiation shield that virtually eliminates BBR-associated uncertainty.

A well-adapted organism becomes a prime target for parasites, forcing it to keep readapting in an evolutionary arms race. Researchers have shown that ecological interactions among dozens of species can also drive evolution indefinitely.

Rhombohedrally stacked graphene can be coaxed into an exotic superconducting state simply by injecting electrons and applying a voltage.

Researchers studied recordings of cicadas and found that the insects’ singing is synchronized with the Sun's position in the sky. The rapid rise in volume suggests that each cicada starts singing in response to the light level and its neighbors' behavior.

By analyzing ostensibly blank JWST calibration images, researchers sought signs of dark matter within the telescope itself. Finding none, they put constraints on the existence of a type of dark matter that interacts strongly with ordinary matter.

Localized quantum information inevitably disperses and can no longer be easily retrieved. This information scrambling is typically fast and uniform. But now researchers have observed slow, nonuniform scrambling in an atomic system.