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VOLUME 61 (1995) | ISSUE 12 | PAGE 1017
Evolution of a wave packet in a Josephson two-junction interferometer
A system of two Josephson junctions in a superconducting ring is studied. The dynamics of the system can be described adequately by the regular equations of quantum mechanics taking into account the change in the external magnetic flux and the coupling with the heat reservoir. It is shown that a two-junction interferometer can be regarded as a device that performs a quantum-mechanical measurement of a coordinate.