Optical Indistinguishability via Twinning Fields.

@article{McCaul2021OpticalIV,
  title={Optical Indistinguishability via Twinning Fields.},
  author={Gerard McCaul and Alexander F. King and Denys I. Bondar},
  journal={Physical review letters},
  year={2021},
  volume={127 11},
  pages={
          113201
        }
}
Here we introduce the concept of the twinning field-a driving electromagnetic pulse that induces an identical optical response from two distinct materials. We show that for a large class of pairs of generic many-body systems, a twinning field which renders the systems optically indistinguishable exists. The conditions under which this field exists are derived, and this analysis is supplemented by numerical calculations of twinning fields for both the 1D Fermi-Hubbard model, and tight-binding… 

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