[flubert]

Probably using something other than synchronously clocked digital gates. Analog neural networks and the like:

https://www.analog.com/en/analog-dialogue/articles/consideri...

...or reversible computation...

https://cqi.inf.usi.ch/qic/80_Toffoli.pdf

https://calculemus.org/logsoc03/materialy/ConservativeLogic....