Quantum Device Revolutionizes Electricity Detection

Quick Summary

• Scientists at NIST (National Institute of Standards and Technology), Maryland, have developed a single quantum device to define all three primary units of electricity-amperes, ohms, and volts.
• Currently, these measurements require two separate fragile quantum devices that operate under controlled conditions at very low temperatures.
• The new “one-box” method enables both systems to function in the same cryostat by utilizing a novel material that eliminates the need for disruptive magnetic fields.
• The device achieves measurement uncertainties within a few millionths for each unit; however, further improvements are required in accuracy due to heating issues caused by system integration and limitations of the novel quantum material it employs.
• Poor infrastructure at NIST was cited as one challenge affecting development accuracy according to lead researcher Jason Underwood.
• Experts from around the world have lauded this innovation for its potential to simplify electrical standardization substantially while reducing costs and broadening accessibility for global researchers.