Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 송석호 | - |
dc.date.accessioned | 2018-08-07T00:33:49Z | - |
dc.date.available | 2018-08-07T00:33:49Z | - |
dc.date.issued | 2016-07 | - |
dc.identifier.citation | NATURE COMMUNICATIONS, v. 7, Page. 1-6 | en_US |
dc.identifier.issn | 2041-1723 | - |
dc.identifier.uri | https://www.nature.com/articles/ncomms12201 | - |
dc.identifier.uri | https://repository.hanyang.ac.kr/handle/20.500.11754/74352 | - |
dc.description.abstract | Recently, synthetic optical materials represented via non-Hermitian Hamiltonians have attracted significant attention because of their nonorthogonal eigensystems, enabling unidirectionality, nonreciprocity and unconventional beam dynamics. Such systems demand carefully configured complex optical potentials to create skewed vector spaces with a desired metric distortion. In this paper, we report optically generated non-Hermitian photonic lattices with versatile control of real and imaginary sub-lattices. In the proposed method, such lattices are generated by vector-field holographic interference of two elliptically polarized pump beams on azobenzene-doped polymer thin films. We experimentally observe violation of Friedel's law of diffraction, indicating the onset of complex lattice formation. We further create an exact parity-time symmetric lattice to demonstrate totally asymmetric diffraction at the spontaneous symmetry-breaking threshold, referred to as an exceptional point. On this basis, we provide the experimental demonstration of reconfigurable non-Hermitian photonic lattices in the optical domain and observe the purest exceptional point ever reported to date. | en_US |
dc.description.sponsorship | This research was supported in part by the Basic Science Research Program (NRF-2015R1A2A2A01007553) and by the Global Frontier Program through the National Research Foundation (NRF) of Korea funded by the Ministry of Science, ICT & Future Planning (NRF-2014M3A6B3063708). | en_US |
dc.language.iso | en | en_US |
dc.publisher | NATURE PUBLISHING GROUP | en_US |
dc.subject | PARITY-TIME-SYMMETRY | en_US |
dc.subject | POLARITON WAVE-GUIDES | en_US |
dc.subject | LIGHT-PROPAGATION | en_US |
dc.subject | POTENTIALS | en_US |
dc.subject | MODULATION | en_US |
dc.subject | SPECTRA | en_US |
dc.subject | FILMS | en_US |
dc.title | Observation of exceptional points in reconfigurable non-Hermitian vector-field holographic lattices | en_US |
dc.type | Article | en_US |
dc.relation.volume | 7 | - |
dc.identifier.doi | 10.1038/ncomms12201 | - |
dc.relation.page | 12201-12201 | - |
dc.relation.journal | NATURE COMMUNICATIONS | - |
dc.contributor.googleauthor | Hahn, Choloong | - |
dc.contributor.googleauthor | Choi, Youngsun | - |
dc.contributor.googleauthor | Yoon, Jae Woong | - |
dc.contributor.googleauthor | Song, Seok Ho | - |
dc.contributor.googleauthor | Oh, Cha Hwan | - |
dc.contributor.googleauthor | Berini, Pierre | - |
dc.relation.code | 2016003600 | - |
dc.sector.campus | S | - |
dc.sector.daehak | COLLEGE OF NATURAL SCIENCES[S] | - |
dc.sector.department | DEPARTMENT OF PHYSICS | - |
dc.identifier.pid | shsong | - |
dc.identifier.researcherID | P-8921-2017 | - |
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