Nonreciprocal Metamaterial Obeying Time-Reversal Symmetry

被引：43

作者：

Buddhiraju, Siddharth ^{[1
]}

Song, Alex ^{[1
]}

Papadakis, Georgia T. ^{[1
]}

Fan, Shanhui ^{[1
]}

机构：

[1] Stanford Univ, Dept Elect Engn, Ginzton Lab, Stanford, CA 94305 USA

来源：

PHYSICAL REVIEW LETTERS | 2020年 / 124卷 / 25期

基金：

美国国家科学基金会;

关键词：

GIANT BANDGAP RENORMALIZATION; TRANSITIONS; PHOTONICS;

D O I：

10.1103/PhysRevLett.124.257403

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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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页数：6

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