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Nano Lett. 2010 Aug 11;10(8):2789-93. doi: 10.1021/nl100663w.

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

Author information

1
Cavendish Laboratory, JJ Thomson Road, Cambridge CB3 0HE, United Kingdom. kpeterss@princeton.edu

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 noninvasive technique for measuring charge and spin states in quantum dot systems without requiring a separate mesoscopic detector.

PMID:
20698590
DOI:
10.1021/nl100663w
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