Electron spins of phosphorus atoms entangled via geometric gate implanted in a silicon chip quickly encode shielded quantum information

https://www.eurekalert.org/news-releases/1098445

"fast operation vs. noise shielding tradeoff solved... atomic nucleus spin is the cleanest, most isolated quantum object... same isolation making atomic nuclei so clean makes it hard to connect them together in large-scale quantum processor... distance between nuclei 20 nm, scale of silicon computer chips... removes need for the atomic nuclei to be attached to the same electron, enabling robustness/ scalability... electrons easy to move around into shape, so interactions can be switched on and off quickly and precisely"