Breakthrough Energy, an umbrella group for energy and environmental efforts funded by Mr. Gates, is resetting for the Trump era. By David Gelles and Theodore Schleifer Breakthrough Energy ...

"Some of them were harebrained ideas, but there were a lot of very good ones." Numerous innovations and theories bear his name, from the Fredkin Gate to Fredkin's Paradox — his ideas on digital ...

With a pair of innovations – the billiard-ball computer model, which he developed with Tommaso Toffoli, and the Fredkin Gate – he demonstrated that computation is not inherently irreversible.

Anant Agarwal and Ed Fredkin [Photo: Rachel Gordon/MIT CSAIL ... the BASIC interpreter that Bill Gates and Paul Allen coded for the Altair computer in 1975. The Altair was one of the first ...

This is exemplified by the classical Fredkin (or controlled-SWAP) gate for which, despite many theoretical proposals, a true quantum analogue has yet to be realised. Here, by directly adding control ...