Microsecond resolution of quasiparticle tunneling in the single-Cooper-pair-transistor

Details Microsecond resolution of quasiparticle tunneling in the single-Cooper-pair-transistor Microsecond resolution of quasiparticle tunneling in the single-Cooper-pair-transistor

2006-04-18

arxiv.org/abs/cond-mat/0604403v3

Physics

Condensed Matter

Superconductivity

4 pages, 4 figs

Scientific paper

10.1103/PhysRevLett.97.106603

We present radio-frequency measurements on a single-Cooper-pair-transistor in which individual quasiparticle poisoning events were observed with microsecond temporal resolution. Thermal activation of the quasiparticle dynamics is investigated, and consequently, we are able to determine energetics of the poisoning and un-poisoning processes. In particular, we are able to assign an effective quasiparticle temperature to parameterize the poisoning rate.

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