Higgs-like pair amplitude dynamics in superconductor–quantum-dot hybrids

@article{Kamp2020HiggslikePA,
  title={Higgs-like pair amplitude dynamics in superconductor–quantum-dot hybrids},
  author={M. Kamp and Bj{\"o}rn Sothmann},
  journal={Physical Review B},
  year={2020},
  volume={103},
  pages={045414}
}
We consider a quantum dot weakly tunnel coupled to superconducting reservoirs. A finite superconducting pair amplitude can be induced on the dot via the proximity effect. We investigate the dynamics of the induced pair amplitude after a quench and under periodic driving of the system by means of a real-time diagrammatic approach. We find that the quench dynamics is dominated by an exponential decay towards equilibrium. In contrast, the periodically driven system can sustain coherent… 
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