A new publication from Opto-Electronic Science; DOI 10.29026/oes.2022.220010 considers optical logic gates in future computers.

Using this approach, the researchers were able to make ultrafast (less than 100 fs operating time) all-optical XNOR, NOR, AND, XOR, OR and NAND logic gates, as well as a half-adder. And that’s not all ...

Various logic gates—AND, OR, XOR, NAND, NOT, CNOT, and a half adder—could be put together using different combinations of robots. The DNA gates all take two inputs in the form of other molecules.

It is nice to see someone who appreciates the three requirements for logic. Amplification, Inversion and AND, or OR :) The Nand gate does all three, but still it is three parts.

A research team from Skoltech and the University of Wuppertal in Germany determined that an all-optical universal logic gate that was previously developed at Skoltech can operate at a speed of 240 ...

Sep 28, 2022: Optical logic gates in future computers (Nanowerk News) A new publication from Opto-Electronic Science considers optical logic gates in future computers ("All-optical logic gate ...