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

doi:10.1021/nl100663w

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

Mesoscale and Nanoscale Physics 2015-05-18 v1

Authors: 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.

Keywords

double quantum dot state readout resonator charge state spin state quantum computing

Cite

@article{arxiv.1004.4047,
  title  = {Charge and spin state readout of a double quantum dot coupled to a resonator},
  author = {K. D. Petersson and C. G. Smith and D. Anderson and P. Atkinson and G. A. C. Jones and D. A. Ritchie},
  journal= {arXiv preprint arXiv:1004.4047},
  year   = {2015}
}

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

Abstract

Keywords

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