Light-based computers? First all-optical nanowire switch

Computers may be getting faster every year, but those advances in computer speed could be dwarfed if their 1s and 0s were represented by light, instead of electricity. Researchers have made an important advance in this frontier of photonics, fashioning the first all-optical photonic switch out of cadmium sulfide nanowires. Moreover, they combined these photonic switches into a logic gate, a fundamental component of computer chips that process information.

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