Operating electronic components, such as for mobile phones and internet data, using light rather than just electricity

https://www.eurekalert.org/news-releases/1101318

"electron gas generation by illuminating oxide layered material, when switched off gas disappears... much faster, more energy-efficient, simpler operation... eliminates up to third of chip's electrical contacts saving around billion electrical contacts on computer processor alone... also, ultra-sensitive optical detectors where for same electrical voltage light boosts current produced up to 100,000X stronger than in dark... these gases occur naturally in certain semiconductor materials... electronics, spintronics, quantum computing"