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arXiv · 2103.01162

Optical Indistinguishability via Twinning Fields

Gerard McCaul·Alexander F. King·Denys I. Bondar
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Abstract

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 pairs of generic many-body systems, a twinning field which renders the systems \emph{optically indistinguishable} always exists. The conditions under which this field is unique are derived, and this analysis is supplemented by numerical calculations of twinning fields for the Fermi-Hubbard model. The universal existence of twinning fields may lead to new research directions in non-linear optics, materials science, and quantum technologies.

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Gerard McCaul, Alexander F. King, Denys I. Bondar. 2021-03-01. Optical Indistinguishability via Twinning Fields. https://doi.org/10.1103/physrevlett.127.113201

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