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Article: Revealing the missing dimension at an exceptional point

TitleRevealing the missing dimension at an exceptional point
Authors
Issue Date2020
Citation
Nature Physics, 2020, v. 16, n. 5, p. 571-578 How to Cite?
Abstract© 2020, The Author(s), under exclusive licence to Springer Nature Limited. The radiation of electromagnetic and mechanical waves depends not only on the intrinsic properties of the emitter but also on the surrounding environment. This principle has laid the foundation for the development of lasers, quantum optics, sonar, musical instruments and other fields related to wave–matter interaction. In the conventional wisdom, the environment is defined exclusively by its eigenstates, and an emitter radiates into and interacts with these eigenstates. Here we show experimentally that this scenario breaks down at a non-Hermitian degeneracy known as an exceptional point. We find a chirality-reversal phenomenon in a ring cavity where the radiation field reveals the missing dimension of the Hilbert space, known as the Jordan vector. This phenomenon demonstrates that the radiation field of an emitter can become fully decoupled from the eigenstates of its environment. The generality of this striking phenomenon in wave–matter interaction is experimentally confirmed in both electromagnetic and acoustic systems. Our finding transforms the fundamental understanding of light–matter interaction and wave–matter interaction in general, and enriches the intriguing physics of exceptional points.
Persistent Identifierhttp://hdl.handle.net/10722/294975
ISSN
2023 Impact Factor: 17.6
2023 SCImago Journal Rankings: 8.228
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorChen, Hua Zhou-
dc.contributor.authorLiu, Tuo-
dc.contributor.authorLuan, Hong Yi-
dc.contributor.authorLiu, Rong Juan-
dc.contributor.authorWang, Xing Yuan-
dc.contributor.authorZhu, Xue Feng-
dc.contributor.authorLi, Yuan Bo-
dc.contributor.authorGu, Zhong Ming-
dc.contributor.authorLiang, Shan Jun-
dc.contributor.authorGao, He-
dc.contributor.authorLu, Ling-
dc.contributor.authorGe, Li-
dc.contributor.authorZhang, Shuang-
dc.contributor.authorZhu, Jie-
dc.contributor.authorMa, Ren Min-
dc.date.accessioned2021-01-05T04:58:48Z-
dc.date.available2021-01-05T04:58:48Z-
dc.date.issued2020-
dc.identifier.citationNature Physics, 2020, v. 16, n. 5, p. 571-578-
dc.identifier.issn1745-2473-
dc.identifier.urihttp://hdl.handle.net/10722/294975-
dc.description.abstract© 2020, The Author(s), under exclusive licence to Springer Nature Limited. The radiation of electromagnetic and mechanical waves depends not only on the intrinsic properties of the emitter but also on the surrounding environment. This principle has laid the foundation for the development of lasers, quantum optics, sonar, musical instruments and other fields related to wave–matter interaction. In the conventional wisdom, the environment is defined exclusively by its eigenstates, and an emitter radiates into and interacts with these eigenstates. Here we show experimentally that this scenario breaks down at a non-Hermitian degeneracy known as an exceptional point. We find a chirality-reversal phenomenon in a ring cavity where the radiation field reveals the missing dimension of the Hilbert space, known as the Jordan vector. This phenomenon demonstrates that the radiation field of an emitter can become fully decoupled from the eigenstates of its environment. The generality of this striking phenomenon in wave–matter interaction is experimentally confirmed in both electromagnetic and acoustic systems. Our finding transforms the fundamental understanding of light–matter interaction and wave–matter interaction in general, and enriches the intriguing physics of exceptional points.-
dc.languageeng-
dc.relation.ispartofNature Physics-
dc.titleRevealing the missing dimension at an exceptional point-
dc.typeArticle-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1038/s41567-020-0807-y-
dc.identifier.scopuseid_2-s2.0-85081677358-
dc.identifier.volume16-
dc.identifier.issue5-
dc.identifier.spage571-
dc.identifier.epage578-
dc.identifier.eissn1745-2481-
dc.identifier.isiWOS:000518737400006-
dc.identifier.issnl1745-2473-

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