Shattered glass does not leap back into your hand. Smoke from a match does not gather itself and crawl back inside. In everyday life, time feels like a one-way street, and you only get one chance to ...

An international research team involving Paderborn University has achieved a crucial breakthrough on the road to a quantum internet. For the first time ever, the polarization state of a single photon ...

Modern life runs on light. Fiber-optic cables move data across continents, lasers guide surgeries, and photons sit at the heart of quantum technologies. Yet one long-standing goal has remained elusive ...