Current computer processors use metal wires to exchange information with other components, sending and receiving electrical signals moving through them. This has limitations because of the resistance of copper. One area that historically promises to solve this problem is the photon: use light to transmit data over optical fiber, but the technology was too complex to be included in a microchip. Leaders of a project that got underway three American universities (the University of California at Berkeley, the Massachusetts Institute of Technology and the University of Colorado at Boulder) report…
Read MoreThe next chip could be connected by light, instead of copper
