Journal
NANO LETTERS
Volume 10, Issue 8, Pages 2789-2793Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nl100663w
Keywords
Semiconductor quantum dots; quantum computing; single electron devices
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Funding
- EPSRC
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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 noninvasive technique for measuring charge and spin states in quantum dot systems without requiring a separate mesoscopic detector.
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