Phonon-mediated long-distance qubit communication across epitaxially grown compressively strained germanium-on-silicon platform

https://www.eurekalert.org/news-releases/1137704

"microwave or surface acoustic wave methods require bulky external interconnect hardware, a long-range connectivity barrier scaling quantum processors toward 1M qubits... overcome using Quantum Phononic Links: acoustic vibrations as quantum bus transferring information between non-adjacent qubits across single semiconductor... enables coherent qubit coupling across wafers spanning up to 300 mm... CMOS foundry-compatible fabrication... compact fault-tolerant quantum computing platforms"