First programmably switchable superconducting diode allows zero-resistance electricity flow in one direction

https://phys.org/news/2026-03-programmable-superconducting-diode.html

"getting superconductor to perform as diode usually requires external magnetic field which is bulky/ interferes with quantum qubits... overcome using Josephson junction made of specialized materials that creates intrinsic directional preference... unlike previous versions, this diode's direction and sensitivity can be tuned electronically, meaning a single chip can be reprogrammed to change how it routes data without physical hardware changes... energy efficient.