Double-island single-electron transistor operated at radio-frequency for sensitive and fast charge detection

  • Authors:

  • R. Brenner;T. M. Buehler;D. J. Reilly

  • Affiliations:

  • Centre for Quantum Computer Technology, The University of New South Wales, Sydney NSW 2052, Australia;Centre for Quantum Computer Technology, The University of New South Wales, Sydney NSW 2052, Australia;Centre for Quantum Computer Technology, The University of New South Wales, Sydney NSW 2052, Australia

  • Venue:
  • Microelectronic Engineering
  • Year:
  • 2005

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Abstract

We present a double-island single-electron transistor operated at radio-frequency (rf-DISET) for fast and highly sensitive detection of charge motion in the solid state. The devices were fabricated using electron-beam lithography and a standard shadow-mask evaporation technique. Fast operation was made possible by including a DISET in an impedance-matching tank circuit. Well above 1/f noise this DISET exhibited an excellent charge sensitivity of 5.6x10^-^6e/Hz. We present time-domain measurements of small charge signals (=