Coupling Two Distant Double Quantum Dots with a Microwave Resonator.

  title={Coupling Two Distant Double Quantum Dots with a Microwave Resonator.},
  author={Guang-Wei Deng and Da Wei and Shu-Xiao Li and J. R. Johansson and Weicheng Kong and Hai-Ou Li and Gang Cao and Ming Xiao and Guangcan Guo and Franco Nori and Hongwen Jiang and Guo-Ping Guo},
  journal={Nano letters},
  volume={15 10},
We fabricated a hybrid device with two distant graphene double quantum dots (DQDs) and a microwave resonator. A nonlinear response is observed in the resonator reflection amplitude when the two DQDs are jointly tuned to the vicinity of the degeneracy points. This observation can be well fitted by the Tavis-Cummings (T-C) model which describes two two-level systems coupling with one photonic field. Furthermore, the correlation between the DC currents in the two DQDs is studied. A nonzero cross… 

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