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Optics & Photonics 57 minutes ago

Levitating glass sphere becomes entangled with light at room temperature

Today, many physicists are actively exploring how light could be used to link objects through quantum entanglement. By fully harnessing the effect, they hope to unlock a wide array of applications, from secure communication ...

Environment 11 hours ago

Fierce lobbying in EU over 'forever chemicals'

The European Union is under pressure to ban "forever chemicals," but a battle is heating up in Brussels over the toxic substances known as PFAS, with industry groups seeking as many exemptions as possible.

Optics & Photonics 20 hours ago

X-ray technique reveals how quantum materials respond to laser pulses in real time

Creating a quantum device often begins by intentionally damaging a crystal. Scientists fire an ultrafast laser pulse into a material, knocking atoms out of place and leaving behind tiny imperfections called vacancies. Far ...

Optics & Photonics 22 hours ago

New chip-based frequency combs demonstrate potential for portable atomic clocks

The world would look radically different without rulers and measuring tapes that fit into a pocket. Carpenters, fashion designers and engineers rely on these trusty tools to check the size of everything from a wooden board ...

Astronomy Oct 4, 2026

Gamma-ray search sets new limits on dark matter annihilation in the inner Milky Way

Dark matter could be a type of matter in the universe that does not emit, absorb or reflect detectable light and appears to interact very weakly with regular matter. Although physicists have observed gravitational effects ...

Condensed Matter Oct 4, 2026

Giant fluctuations of focused light reveal hidden correlations in opaque materials

When light travels through a strongly scattering material, such as biological tissue or other disordered opaque media, it follows many different paths and produces a seemingly random speckle pattern. Wavefront shaping makes ...

Optics & Photonics Oct 3, 2026

Reading hidden topology in light, even when energy leaks away

When I explain topology to students, I start with a knot in a rope. You can stretch it, twist it or shake it, but the knot stays until you cut the rope. Physicists have found that some materials and devices carry similar ...

Nanophysics Oct 2, 2026

Mirror-image crystals reverse the direction of light-driven currents

The circular photogalvanic effect (CPGE), a phenomenon that generates helicity-dependent photocurrents in noncentrosymmetric materials, can originate purely from a crystal's internal structure without a contribution from ...

Optics & Photonics Oct 2, 2026

A laser that stays locked without active control

EPFL researchers have developed a chip-based laser that keeps a very stable frequency across its tested operating range, without needing active electronic control. Their research is published in the journal Nature Photonics.

Optics & Photonics Oct 1, 2026

New method generates nearly indistinguishable photons for quantum communication

Working in close collaboration, researchers from Paderborn University, the University of Basel and Ruhr University Bochum have made a breakthrough in quantum communication. In their recently published paper in the journal ...

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