Researchers build new device that is a foundation for quantum computing

https://phys.org/news/2024-05-device-foundation-quantum.html

"microwave circulator for use in quantum computers, enabling precisely tuning exact degree nonreciprocity between qubit and microwave-resonant... nonreciprocity giving access to data without power to alter, controlled by circulator, which has model containing 6 parameters applicable to many devices... device looks like "Y" with circulator at center, 1 leg resonant superconducting cavity hosting electromagnetic field, other leg holds qubit, printed on sapphire chip, final leg output port"