Direct observation of unidirectional exciton polaritons in layered van der Waals semiconductors
Yuanjie Yang,
Yihua Bai,
Jiadian Yan
et al.
Abstract:Unidirectional excitation of highly confined guided modes is essential for nanoscale energy transport, photonic integrated devices, and quantum information processing. Among various feasible approaches, the mechanism based on optical spin-orbit coupling has been investigated for unidirectional routing of surface plasmons and valley exciton polaritons, without exploiting the complicate magneto-optical effects and parity symmetry breaking. So far, the direct nanoimaging of such exotic polaritonic modes in near f… Show more
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