A C-NOT logic gate requires two input photons. So the circuit works by zapping the quantum dot twice, generating two photons. These are identical because they’ve come from the same dot.

This allows current to flow between source and drain, making the device a NEMS field-effect transistor. Mehregany and colleagues were then able to make a NOT logic gate by combining two such switches.

Date Announced: 23 Apr 2013 AUSTIN, Texas – Following its entry into the LED retrofit market in 2012 with a line of dual-stage LED drivers, Cirrus Logic, Inc. (Nasdaq: CRUS) has introduced its first ...