Direct measurement of a non-Hermitian topological invariant in a hybrid light-matter system.
Rui SuEliezer EstrechoDąbrówka BiegańskaYuqing HuangMatthias WurdackMaciej PieczarkaAndrew G TruscottTimothy C H LiewElena A OstrovskayaQihua XiongPublished in: Science advances (2021)
[Figure: see text].
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