Quantum Physics2025-12-281 minarXiv:2512.23119expressSuperconducting Resonators: Small Current, Big EffectA superconducting circuit is like a frictionless swing, only possible at temperatures of liquid helium (–273 °C). In such cold, electric current runs in a loop without fading, keeping its rhythm.Achintya Paradkar·Paul Nicaise·Karim Dakroury·Fabian Resare·Christian Dejaco·Lukas Deeg·Gerhard Kirchmair·Witlef WieczorekAlbert EinsteinAlexei KitaevAugustin-Louis CauchysuperconductivitysuperfluidityCooper pairthermal conductivityStandard Model👍👎☆SimplePopularAdvanced