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

Scientists have created a groundbreaking quantum device that accurately measures all three fundamental electrical units—amperes, volts, and ohms—in a single system. By integrating a quantum anomalous Hall resistor and a programmable Josephson voltage standard in one cryostat, researchers achieved extremely precise measurements without the interference issues that previously prevented such integration. This breakthrough could revolutionize electrical measurement in laboratories and lead to more accurate data in electronics manufacturing, scientific research, and medical diagnostics.