A tiny coil changes the properties of a superconducting circuit so that its frequency jumps by gigahertz from microamps of current. Such sensitivity will turn an ordinary microchip into a magnetic field detector. One possible application is quantum computing.
🎯 Superconducting resonators detect magnetic field fluctuations a billion times smaller than Earth's field.
🎬 This work brings quantum computers closer — devices that process information not with bits but with qubits, as in science fiction.