An international collaboration, including researchers from the National Physical Laboratory (NPL) and Royal Holloway, University of London, has successfully demonstrated a quantum coherent effect in a new quantum device made out of continuous superconducting wire – the Charge Quantum Interference Device (CQUID).
This research is an important milestone towards a robust new quantum standard for the electric current, and could be capable of disseminating the new definition of the ampere, which is expected to be decided on by the global measurement community as part of the redefinition of the international system of units (SI) later this year.
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