Single integrated quantum device that measures amperes, volts and ohms could revolutionize how we measure electricity

https://phys.org/news/2025-08-quantum-device-amperes-volts-ohms.html

"integrates 2 quantum systems, quantum anomalous Hall resistor/ programmable Josephson voltage standard, into 1 cryostat providing low-temperature for both to operate effectively... material performs quantum functions without magnetic field... measurements using quantum mechanics principles far more precise than standard measurements... measured voltages from 0.24 to 6.5 mV, amperes, ohms with very little error... spur innovation in topological material systems, cryostat design/ engineering"