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|Abstract:||We demonstrate charge sensing of an InAs nanowire double quantum dot (DQD) coupled to a radio frequency (rf) circuit. We measure the rf signal reflected by the resonator using homodyne detection. Clear single dot and DQD behavior are observed in the resonator response. rf-reflectometry allows measurements of the DQD charge stability diagram in the few-electron regime even when the dc current through the device is too small to be measured. For a signal-to-noise ratio of one, we estimate a minimum charge detection time of 350 mu s at interdot charge transitions and 9 mu s for charge transitions with the leads. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4729469]|
|Electronic Publication Date:||22-Jun-2012|
|Citation:||Jung, M, Schroer, MD, Petersson, KD, Petta, JR. (2012). Radio frequency charge sensing in InAs nanowire double quantum dots. APPLIED PHYSICS LETTERS, 100 (10.1063/1.4729469|
|Type of Material:||Journal Article|
|Journal/Proceeding Title:||APPLIED PHYSICS LETTERS|
|Version:||Final published version. Article is made available in OAR by the publisher's permission or policy.|
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