New technology could offer a double safeguard to guard against counterfeiting.

Physicists from Austria and Israel developed a perfect absorber for arbitrary wavefronts.

Multi-entanglement could be useful for sophisticated information processing schemes.

Mirror-based device only reflects desired light.

Variable focus length lays groundwork for more comfortable, realistic AR/VR experiences.

A tunable electro-optic modulator for free space applications can modulate light at gigahertz speed.

Photonic metasurfaces operate in the visible range and can be used for biomedical applications in wet environments.

Photonic metasurfaces operate in the visible range and can be used for biomedical applications in wet environments.