Charge Number Dependence of the Dephasing Rates of a Graphene Double Quantum Dot in a Circuit QED Architecture.

@article{Deng2015ChargeND,
  title={Charge Number Dependence of the Dephasing Rates of a Graphene Double Quantum Dot in a Circuit QED Architecture.},
  author={Guang-Wei Deng and Da Wei and J. R. Johansson and Miao Zhang and Shu-Xiao Li and Hai-Ou Li and Gang Cao and Ming Xiao and Tao Tu and Guangcan Guo and Hongwen Jiang and Franco Nori and Guo-Ping Guo},
  journal={Physical review letters},
  year={2015},
  volume={115 12},
  pages={
          126804
        }
}
We use an on-chip superconducting resonator as a sensitive meter to probe the properties of graphene double quantum dots at microwave frequencies. Specifically, we investigate the charge dephasing rates in a circuit quantum electrodynamics architecture. The dephasing rates strongly depend on the number of charges in the dots, and the variation has a period of four charges, over an extended range of charge numbers. Although the exact mechanism of this fourfold periodicity in dephasing rates is… 

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