Two-photon absorption (2PA) is a third-order non-linear optical process in which a molecule simultaneously absorbs two photons of lower energy to reach an excited electronic state. This phenomenon has ...

In a development that could reshape the future of microelectronics, optics, and biomedicine, researchers from Jinan University, in collaboration with the Institute of Chemistry at the Chinese Academy ...

Photonic systems are quickly gaining traction in many emerging applications, including optical communications, lidar sensing, and medical imaging. However, the widespread adoption of photonics in ...

The absorption of photons by atoms encompasses fundamental quantum mechanical aspects, particularly the emergence of randomness to account for the inherent unpredictability in absorption outcomes. We ...

Replacing the crystal used for generating entangled photons can significantly increase quantum imaging contrast.

A cutting-edge experiment has revealed the quantum dynamics of one of nature's most crucial processes. Using a complex cast of metal-studded pigments, proteins, enzymes, and co-enzymes, photosynthetic ...

Researchers at Rockefeller University reported in 2016 that human volunteers, after extended dark adaptation, could detect ...