Everyone talks about quantum computing, what about optical computing?Optical Computing and Moore’s Law Optical computing, like quantum computing, is offered as an alternative to current technology, governed by transistors. On the other hand, optical computing is committed to using light, that is, to the photons as transmitters of information. In contrast, in an optical computer, information is sent at all times by beams of light, in packets and waves. To make an optical computer possible, elements and materials such as fiber optic cables, holographic memories, etc. That is, instead of converting the classic binary signal into light waves, it is about going further: combining the light by multiplying the wave functions instead of adding them. It owes a lot to optics, in the form of optical discs (from CD to Blu-Ray, to DVD and other less popular variants). Of course, the exact figure depends on the medium that light uses to travel, but the differences are minimal compared to electricity.
Article from Explica.