Slowing light down to one-hundredth of its normal speed using photonic crystal cavities shows promise for making all-optical circuits.

Researchers at the NTT Basic Research Laboratories in Japan have succeeded in making the first large-scale coupled nanocavities that can slow light down to one-hundredth of its normal speed. Slow light could be used in photonic memories or logic circuits, which are both difficult to make using present-day technology

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