When intense quantum light knocks electrons out of atoms, the statistics of the light can be transferred to the electrons. Strong-field ionization—a process in which intense laser light strips ...

Two studies find that fundamental quantum constraints rule out a previously proposed neutrino-laser scheme. In last year’s proposal of a neutrino laser, the researchers sought to exploit the same ...

New experiments suggest that superconductivity in twisted bilayer graphene depends on an unconventional electron-pairing mechanism. Figure 1: Two twisted bilayer graphene (TBG) layers stacked one on ...

A ring of optical fiber can be made to host phenomena that originated in the realm of high-energy physics. Yang and his colleagues achieved their feat using a platform based on fiber ring resonators, ...

Figure 1: A cross section of the core of a collapsing star. Electron neutrinos (blue arrows) and muon and tau neutrinos (green arrows) are emitted and absorbed within all parts of the core. In the ...

Through a quantum-switch experiment, researchers attempt to reveal “indefinite causal order”—a quantum phenomenon involving events in a before-and-after superposition. Artistic rendition of the ...

Before determining the correct quantum theory of gravity, researchers need to know if gravity is actually quantized. Experiments testing that assumption are now being developed. Quantum fluctuations ...

Experiments reveal the surprisingly large amount of entropy—and thus heat—generated by a clock that could be part of a quantum processor. Entropy generator. Any timekeeping device, such as an ...

To demonstrate a new system for rapidly rearranging thousands of atoms, researchers produced an animation featuring Schrödinger’s famous feline. This movie shows rubidium atoms being moved around in ...

New physics may explain discrepant values for the ionization energy of a metastable state of helium. Aaron Bondy is a theoretical physicist at Drake University in Iowa, where he works as a ...

Researchers have proposed methods to tune the properties of altermagnets, a step toward practical applications for this new form of magnet. New theoretical work outlines how to create a switchable ...

Time crystals realized in the so-called quasiperiodic regime hold promise for future applications in quantum computing and sensing. In ordinary crystals, atoms or molecules form a repeating pattern in ...