Microsecond Resolution of Quasiparticle Tunneling in the Single-Cooper-Pair Transistor

A. J. Ferguson, N. A. Court, F. E. Hudson, and R. G. Clark
Phys. Rev. Lett. 97, 106603 – Published 7 September 2006
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    Abstract

    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 unpoisoning processes. In particular, we are able to assign an effective quasiparticle temperature to parametrize the poisoning rate.

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    • Received 12 April 2006

    DOI:https://doi.org/10.1103/PhysRevLett.97.106603

    ©2006 American Physical Society

    Authors & Affiliations

    A. J. Ferguson*, N. A. Court, F. E. Hudson, and R. G. Clark

    • Australian Research Centre of Excellence for Quantum Computer Technology, University of New South Wales, Sydney NSW 2052, Australia

    • *Electronic address: andrew.ferguson@unsw.edu.au

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    Vol. 97, Iss. 10 — 8 September 2006

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