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Resonant escape over an oscillating barrier in underdamped Josephson tunnel junctions
Han, Siyuan ; Yu, Yang
Han, Siyuan
Yu, Yang
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Abstract
The escape from a metastable state over an oscillating barrier of an underdamped Josephson tunnel junction has been experimentally investigated with oscillation frequency well separated from the plasma frequency of the junction. The resonant escape, namely, a minimum of the average escape time as a function of the oscillation frequency, was observed. For the oscillation frequency much smaller than the "resonant frequency," the average escape time is the average of the times required to cross over each of the barriers. On the other hand, for the oscillation frequency much greater than the "resonant frequency," the average escape time is that required to cross the average barrier.
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2003-09
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AMERICAN PHYSICAL SOC
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Yu, Y; Han, SY. Resonant escape over an oscillating barrier in underdamped Josephson tunnel junctions. PHYSICAL REVIEW LETTERS. September 2003. 91(12)