Recent Articles

Astrophysics

Synopsis: A Catalog of High-Energy Gamma-Ray Sources

A high-altitude observatory has detected nine astrophysical sources emitting gamma rays with extremely high energies. Read More »

Optics

Synopsis: Two Lasers in One

A single semiconductor laser can produce both an amplitude-modulated and a frequency-modulated frequency comb, demonstrating a physical relationship between two types of output previously thought to be independent. Read More »

Superfluidity

Synopsis: Superfluid Doughnut Spins at Supersonic Speeds

Researchers rev up a rotating Bose-Einstein condensate to beyond a critical speed, setting the stage for creating a giant superfluid vortex. Read More »

Semiconductor Physics

Synopsis: Directionally Sensitive Magnetoresistance

A new experiment shows that the semiconductor germanium exhibits unidirectional magnetoresistance, which had previously only been seen in more exotic materials.   Read More »

Atomic and Molecular Physics

Focus: Catching Electrons as They Escape a Liquid

A new technique allows accurate measurements of electrons that escape a liquid surface—information that is essential for understanding chemical reactions in water droplets in the atmosphere. Read More »

Quantum Physics

Synopsis: Levitated Nanoparticle Goes Quantum

Optically levitated nanosphere shows definitive signature of its quantum ground state of motion. Read More »

Interdisciplinary Physics

Viewpoint: Physics Insights from Neural Networks

Researchers probe a machine-learning model as it solves physics problems in order to understand how such models “think.” Read More »

Quantum Information

Synopsis: A Few Qubits Go a Long Way

The right combination of quantum and classical computations allows for accurate quantum chemistry simulations using surprisingly few qubits. Read More »

Quantum Information

Viewpoint: Quantum Computer Crosscheck

A new experiment demonstrates how to verify the output from one quantum computer by comparing it to the output of a second quantum computer. Read More »