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arXiv · 1004.4047

Charge and spin state readout of a double quantum dot coupled to a resonator

K. D. Petersson·C. G. Smith·D. Anderson·P. Atkinson·G. A. C. Jones·D. A. Ritchie
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Abstract

State readout is a key requirement for a quantum computer. For semiconductor-based qubit devices it is usually accomplished using a separate mesoscopic electrometer. Here we demonstrate a simple detection scheme in which a radio-frequency resonant circuit coupled to a semiconductor double quantum dot is used to probe its charge and spin states. These results demonstrate a new non-invasive technique for measuring charge and spin states in quantum dot systems without requiring a separate mesoscopic detector.

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K. D. Petersson, C. G. Smith, D. Anderson, P. Atkinson, G. A. C. Jones, D. A. Ritchie. 2010-04-23. Charge and spin state readout of a double quantum dot coupled to a resonator. https://doi.org/10.1021/nl100663w

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