One + one = zero: coupled lasers turn each other off

High hopes have been maintained for decades concerning optical logic, optical switching matrices (e.g. for communications), and optical computing. The missing link in actualizing this promise is a practical circuit element that allows one light to be turned on or off purely by application of another light to the device - rather like voltage on the control gate of a field effect transistor. This missing link has now been developed through a novel application of the complex behavior exhibited by coupled lasers.

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