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Article: Manifestation of PT symmetry breaking in polarization space with terahertz metasurfaces

TitleManifestation of PT symmetry breaking in polarization space with terahertz metasurfaces
Authors
Issue Date2014
Citation
Physical Review Letters, 2014, v. 113, n. 9, article no. 093901 How to Cite?
AbstractBy utilizing the vector nature of light as well as the inherent anisotropy of artificial meta-atoms, we investigate parity time symmetry breaking in polarization space using a metasurface with anisotropic absorption, whose building blocks consist of two orthogonally orientated meta-atoms with the same resonant frequency but different loss coefficients. By varying their coupling strength, we directly observe a phase transition in the eigenpolarization states of the system, across which the long axis of the eigenpolarization ellipses experience a sudden rotation of 45°. Despite the lack of rotational symmetry of the metasurface, precisely at the phase transition, known as the exceptional point, the eigenmodes coalesce into a single circularly polarized state. The PT symmetric metasurfaces are experimentally implemented at terahertz frequencies. © 2014 American Physical Society.
Persistent Identifierhttp://hdl.handle.net/10722/295032
ISSN
2020 Impact Factor: 9.161
2015 SCImago Journal Rankings: 3.731
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorLawrence, Mark-
dc.contributor.authorXu, Ningning-
dc.contributor.authorZhang, Xueqian-
dc.contributor.authorCong, Longqing-
dc.contributor.authorHan, Jiaguang-
dc.contributor.authorZhang, Weili-
dc.contributor.authorZhang, Shuang-
dc.date.accessioned2021-01-05T04:58:55Z-
dc.date.available2021-01-05T04:58:55Z-
dc.date.issued2014-
dc.identifier.citationPhysical Review Letters, 2014, v. 113, n. 9, article no. 093901-
dc.identifier.issn0031-9007-
dc.identifier.urihttp://hdl.handle.net/10722/295032-
dc.description.abstractBy utilizing the vector nature of light as well as the inherent anisotropy of artificial meta-atoms, we investigate parity time symmetry breaking in polarization space using a metasurface with anisotropic absorption, whose building blocks consist of two orthogonally orientated meta-atoms with the same resonant frequency but different loss coefficients. By varying their coupling strength, we directly observe a phase transition in the eigenpolarization states of the system, across which the long axis of the eigenpolarization ellipses experience a sudden rotation of 45°. Despite the lack of rotational symmetry of the metasurface, precisely at the phase transition, known as the exceptional point, the eigenmodes coalesce into a single circularly polarized state. The PT symmetric metasurfaces are experimentally implemented at terahertz frequencies. © 2014 American Physical Society.-
dc.languageeng-
dc.relation.ispartofPhysical Review Letters-
dc.titleManifestation of PT symmetry breaking in polarization space with terahertz metasurfaces-
dc.typeArticle-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1103/PhysRevLett.113.093901-
dc.identifier.pmid25215984-
dc.identifier.scopuseid_2-s2.0-84907379836-
dc.identifier.volume113-
dc.identifier.issue9-
dc.identifier.spagearticle no. 093901-
dc.identifier.epagearticle no. 093901-
dc.identifier.eissn1079-7114-
dc.identifier.isiWOS:000341292800009-
dc.identifier.issnl0031-9007-

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