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Finite bias charge detection in a quantum dot

R. Schleser·E. Ruh·T. Ihn·K. Ensslin·D. C. Driscoll·A. C. Gossard
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Abstract

We present finite bias measurements on a quantum dot coupled capacitively to a quantum point contact used as a charge detector. The transconductance signal measured in the quantum point contact at finite dot bias shows structure which allows us to determine the time-averaged charge on the dot in the non-blockaded regime and to estimate the coupling of the dot to the leads.

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R. Schleser, E. Ruh, T. Ihn, K. Ensslin, D. C. Driscoll, A. C. Gossard. 2005-03-02. Finite bias charge detection in a quantum dot. https://doi.org/10.1103/physrevb.72.035312

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