Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2004-09-22
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
Accepted for publication in Journal of Applied Physics. Comments always welcome, email djr@phys.unsw.edu.au, tbuehler@phys.uns
Scientific paper
10.1063/1.1813619
Telegraph noise, which originates from the switching of charge between meta-stable trapping sites, becomes increasingly important as device sizes approach the nano-scale. For charge-based quantum computing, this noise may lead to decoherence and loss of read out fidelity. Here we use a radio frequency single electron transistor (rf-SET) to probe the telegraph noise present in a typical semiconductor-based quantum computer architecture. We frequently observe micro-second telegraph noise, which is a strong function of the local electrostatic potential defined by surface gate biases. We present a method for studying telegraph noise using the rf-SET and show results for a charge trap in which the capture and emission of a single electron is controlled by the bias applied to a surface gate.
Buehler T. M.
Chan V. C.
Clark Robert G.
Dzurak Andrew S.
Hamilton Alex R.
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