Tapered photonic switching

@article{Galiffi2022TaperedPS,
  title={Tapered photonic switching},
  author={Emanuele Galiffi and Shixiong Yin and Andrea Al{\'u}},
  journal={Nanophotonics},
  year={2022},
  volume={11},
  pages={3575 - 3581}
}
Abstract The advent of novel nonlinear materials has stirred unprecedented interest in exploring the use of temporal inhomogeneities to achieve novel forms of wave control, amidst the greater vision of engineering metamaterials across both space and time. When the properties of an unbounded medium are abruptly switched in time, propagating waves are efficiently converted to different frequencies, and partially coupled to their back-propagating phase-conjugate partners, through a process called… 

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