Theory predicts 2D chiral polaritons based on achiral Fabry–Pérot cavities using apparent circular dichroism

Andrew H. Salij, Randall H. Goldsmith and Roel Tempelaar ()
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Andrew H. Salij: Northwestern University
Randall H. Goldsmith: University of Wisconsin-Madison
Roel Tempelaar: Northwestern University

Nature Communications, 2024, vol. 15, issue 1, 1-12

Abstract: Abstract Realizing polariton states with high levels of chirality offers exciting prospects for quantum information, sensing, and lasing applications. Such chirality must emanate from either the involved optical resonators or the quantum emitters. Here, we theoretically demonstrate a rare opportunity for realizing polaritons with so-called 2D chirality by strong coupling of the optical modes of (high finesse) achiral Fabry–Pérot cavities with samples exhibiting “apparent circular dichroism” (ACD). ACD is a phenomenon resulting from an interference between linear birefringence and dichroic interactions. By introducing a quantum electrodynamical theory of ACD, we identify the design rules based on which 2D chiral polaritons can be produced, and their chirality can be optimized.

Date: 2024
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DOI: 10.1038/s41467-023-44523-1

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