From https://news.ycombinator.com/item?id=42314333 :
>> From "A carbon-nanotube-based tensor processing unit" (2024) https://www.nature.com/articles/s41928-024-01211-2 :
>>> Using system-level simulations, we estimate that an 8 bit TPU made with nanotube transistors at a 180 nm technology node could reach a main frequency of 850 MHz and an energy efficiency of 1 tera-operations per second per watt.
Can QPUs (Quantum Processing Units) built on with electrons in superconducting graphene ever be faster than photons in integrated nanophotonics?
There are integrated parametric single-photon emitters and detectors.
Is there a lower cost integrated nanophotonic coherent light source for [quantum] computing than a thin metal wire?
"Electrons turn piece of wire into laser-like light source" (2022) https://news.ycombinator.com/item?id=33493885
From https://news.ycombinator.com/item?id=42314333 :
>> From "A carbon-nanotube-based tensor processing unit" (2024) https://www.nature.com/articles/s41928-024-01211-2 :
>>> Using system-level simulations, we estimate that an 8 bit TPU made with nanotube transistors at a 180 nm technology node could reach a main frequency of 850 MHz and an energy efficiency of 1 tera-operations per second per watt.