Amazon is killing its “Do Not Send Voice Recordings” privacy feature on March 28 as the company aims to bolster Alexa+, its new subscription assistant.

University allocates funding and contact point for U.S. scholars looking to relocate to Brussels

New Delhi considers safeguard duty as oversupply from China, South Korea, Japan looms.

An employee at a steel factory in India: Over the past few years, steel prices in the country have been driven down by an influx of finished steel, especially from China. © Reuters.

The result is sickness, starvation and death.

How Trump might drive proliferation.

China is leveraging its globally dominant commercial shipbuilding industry to support its naval modernization—and foreign companies are inadvertently helping. This report outlines how the United States and its partners can confront China’s dual-use shipyards.

Measuring how efficiently an isotope captures neutrons of various energies both confirms and refutes some surprising recent results.

Optical fibers provide an excellent platform for transmitting light over long distances, manipulating it and enhancing light-matter interaction. Now, the “Ultrafast & Twisted Photonics” research group at the Max Planck Institute for the Science of Light (MPL) has developed a new hollow-core fiber that selectively guides optical vortices depending on their helicity and has potential applications in chiral sensing, vortex mode generation, and optical communications.

The results were recently published in the journal ACS Photonics.

In addition to transmitting light over long distances, optical waveguides provide convenient ways of enhancing the interaction of light with matter and manipulating the properties of the guided light. Among several light attributes, pure polarization states are crucial for many applications and research areas.

Led by researchers at the University of Eastern Finland, a recent study demonstrates that random light acquires an additional phase factor, known as the geometric phase, when its oscillation direction (i.e., polarization) is altered in a deterministic manner.

Light is an electromagnetic wave that oscillates periodically, and its phase refers to a specific point in the cycle. Light can be highly organized, meaning the waves oscillate in a specific direction, or its direction may involve randomness.

Previous studies have shown that altering the polarization of well-organized light leads to an accumulation of an additional phase. The current study extends the analysis to random light.