Topological engineering of terahertz light using electrically tunable exceptional point singularities

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buir.contributor.authorKakenov, Nurbek
buir.contributor.orcidKakenov, Nurbek |0000-0003-2321-6157
dc.citation.epage188en_US
dc.citation.issueNumber6589en_US
dc.citation.spage184en_US
dc.citation.volumeNumber376en_US
dc.contributor.authorErgoktas, M. Said
dc.contributor.authorSoleymani, Sina
dc.contributor.authorKakenov, Nurbek
dc.contributor.authorWang, Kaiyuan
dc.contributor.authorSmith, Thomas B.
dc.contributor.authorBakan, Gokhan
dc.contributor.authorBalci, Sinan
dc.contributor.authorPrincipi, Alessandro
dc.contributor.authorNovoselov, Kostya S.
dc.contributor.authorOzdemir, Sahin K.
dc.contributor.authorKocabas, Coskun
dc.date.accessioned2023-02-23T09:25:25Z
dc.date.available2023-02-23T09:25:25Z
dc.date.issued2022
dc.departmentDepartment of Physicsen_US
dc.description.abstractThe topological structure associated with the branch point singularity around an exceptional point (EP) can provide tools for controlling the propagation of light. Through use of graphene-based devices, we demonstrate the emergence of EPs in an electrically controlled interaction between light and a collection of organic molecules in the terahertz regime at room temperature. We show that the intensity and phase of terahertz pulses can be controlled by a gate voltage, which drives the device across the EP. Our electrically tunable system allows reconstruction of the Riemann surface associated with the complex energy landscape and provides topological control of light by tuning the loss imbalance and frequency detuning of interacting modes. Our approach provides a platform for developing topological optoelectronics and studying the manifestations of EP physics in light–matter interactions.en_US
dc.identifier.doi10.1126/science.abn6528en_US
dc.identifier.eissn1095-9203
dc.identifier.issn0036-8075
dc.identifier.urihttp://hdl.handle.net/11693/111623
dc.language.isoEnglishen_US
dc.publisherAmerican Association for the Advancement of Science (AAAS)en_US
dc.relation.isversionofhttps://www.doi.org/10.1126/science.abn6528en_US
dc.source.titleScienceen_US
dc.titleTopological engineering of terahertz light using electrically tunable exceptional point singularitiesen_US
dc.typeArticleen_US
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