Abstract
If the magnetic flux trapped in a superconducting quantum-interference device has observable values , which alternate in time, and if the value at a given moment is unknown, it is in general impossible to determine that value without affecting the results of subsequent observations.
- Received 16 May 1988
DOI:https://doi.org/10.1103/PhysRevLett.61.2019
©1988 American Physical Society
