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arXiv · 2002.00341

Nonreciprocal metamaterial obeying time-reversal symmetry

Siddharth Buddhiraju·Alex Song·Georgia T. Papadakis·Shanhui Fan
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Abstract

We introduce a class of non-Hermitian systems that break electromagnetic reciprocity while preserving time-reversal symmetry, and describe its novel polarization dynamics. We show that this class of systems can be realized using van der Waals heterostructures involving transition-metal dichalcogenides (TMDs). Our work provides a path towards achieving strong optical nonreciprocity and polarization-dependent directional amplification using compact, large-area and magnet-free structures.

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Siddharth Buddhiraju, Alex Song, Georgia T. Papadakis, Shanhui Fan. 2020-02-02. Nonreciprocal metamaterial obeying time-reversal symmetry. https://doi.org/10.1103/physrevlett.124.257403

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