The possibility is discussed of using flux quantization in superconductors as the basis of an ammeter and more generally as a fundamental standard of electromagnetic measurement. A particular design is proposed and in this context some of the fundamental design problems of this sort of instrument are considered. It is concluded that an instrument of this type could measure a current in terms of the flux quantum, length, and time to an accuracy approaching 1 part in 106. The limitations and advantages of the proposed instrument are discussed and comparisons are made with present current‐measuring instruments and some conjectures are made of the future potential of flux quantization instruments of this kind.
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© 1968 The American Institute of Physics.
1968
The American Institute of Physics
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