Maxwell’s demon-like nonreciprocity by non-Hermitian gyrotropic metasurfaces

Wenyan Wang, Wang Tat Yau, Yanxia Cui, Jin Wang, Kin Hung Fung (Corresponding Author)

Research output: Journal article publicationJournal articleAcademic researchpeer-review


We show that Maxwell's demon-like nonreciprocity can be supported in a class of non-Hermitian gyrotropic metasurfaces in the linear regime. The proposed metasurface functions as a transmission-only Maxwell's demon operating at a pair of photon energies. Based on multiple scattering theory, we construct a dual-dipole model to explain the underlying mechanism that leads to the antisymmetric nonreciprocal transmission. The results may inspire new designs of compact nonreciprocal devices for photonics.
Original languageEnglish
Article numberL022006
JournalPhys. Rev. Research
Issue number2
Publication statusPublished - 19 Apr 2021

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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