Abstract

The lifetimes of quantized persistent current states of a superconducting loop interrupted by a single Josephson junction are estimated using the techniques of random-noise theory. Numerical results are presented for physically realizable examples. In the calculations it is assumed thatRC(2eI 1/ħC) 1/2 ≪1 a condition which may be satisfied by either a low-capacitance crossed-film junction or by a weak link.

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