Optical switching of topological phase in a perovskite polariton lattice
Strong light-matter interaction enriches topological photonics by dressing light with matter, which provides the possibility to realize active nonlinear topological devices with immunity to defects. Topological exciton polaritons-half-light, half-matter quasiparticles with giant optical nonlinearity...
| Main Authors: | , , , |
|---|---|
| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2022
|
| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/154330 |
| _version_ | 1826127884788432896 |
|---|---|
| author | Su, Rui Ghosh, Sanjib Liew, Timothy Chi Hin Xiong, Qihua |
| author2 | School of Physical and Mathematical Sciences |
| author_facet | School of Physical and Mathematical Sciences Su, Rui Ghosh, Sanjib Liew, Timothy Chi Hin Xiong, Qihua |
| author_sort | Su, Rui |
| collection | NTU |
| description | Strong light-matter interaction enriches topological photonics by dressing light with matter, which provides the possibility to realize active nonlinear topological devices with immunity to defects. Topological exciton polaritons-half-light, half-matter quasiparticles with giant optical nonlinearity-represent a unique platform for active topological photonics. Previous demonstrations of exciton polariton topological insulators demand cryogenic temperatures, and their topological properties are usually fixed. Here, we experimentally demonstrate a room temperature exciton polariton topological insulator in a perovskite zigzag lattice. Polarization serves as a degree of freedom to switch between distinct topological phases, and the topologically nontrivial polariton edge states persist in the presence of onsite energy perturbations, showing strong immunity to disorder. We further demonstrate exciton polariton condensation into the topological edge states under optical pumping. These results provide an ideal platform for realizing active topological polaritonic devices working at ambient conditions, which can find important applications in topological lasers, optical modulation, and switching. |
| first_indexed | 2024-10-01T07:15:47Z |
| format | Journal Article |
| id | ntu-10356/154330 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T07:15:47Z |
| publishDate | 2022 |
| record_format | dspace |
| spelling | ntu-10356/1543302023-02-28T20:04:12Z Optical switching of topological phase in a perovskite polariton lattice Su, Rui Ghosh, Sanjib Liew, Timothy Chi Hin Xiong, Qihua School of Physical and Mathematical Sciences MajuLab Science::Mathematics Science::Physics Edge States Transition Strong light-matter interaction enriches topological photonics by dressing light with matter, which provides the possibility to realize active nonlinear topological devices with immunity to defects. Topological exciton polaritons-half-light, half-matter quasiparticles with giant optical nonlinearity-represent a unique platform for active topological photonics. Previous demonstrations of exciton polariton topological insulators demand cryogenic temperatures, and their topological properties are usually fixed. Here, we experimentally demonstrate a room temperature exciton polariton topological insulator in a perovskite zigzag lattice. Polarization serves as a degree of freedom to switch between distinct topological phases, and the topologically nontrivial polariton edge states persist in the presence of onsite energy perturbations, showing strong immunity to disorder. We further demonstrate exciton polariton condensation into the topological edge states under optical pumping. These results provide an ideal platform for realizing active topological polaritonic devices working at ambient conditions, which can find important applications in topological lasers, optical modulation, and switching. Ministry of Education (MOE) Published version Q.X. gratefully acknowledges the funding support from the National Natural Science Foundation of China (no. 12020101003) and Tsinghua University Start-up Grant. T.C.H.L. acknowledges the support from the Singapore Ministry of Education via AcRF Tier 3 Programme “Geometrical Quantum Materials” (MOE2018-T3-1-002), AcRF Tier 2 grants (MOE2018-T2-2-068 and MOE2019-T2-1-004). S.G. acknowledges the support from the Singapore Ministry of Education via AcRF Tier 2 grant (MOE2017-T2-1-001). R.S. acknowledges the support from the Singapore Ministry of Education via grants (MOE2018-T3-1-002 and MOE2017-T2-1-040). 2022-05-24T01:42:04Z 2022-05-24T01:42:04Z 2021 Journal Article Su, R., Ghosh, S., Liew, T. C. H. & Xiong, Q. (2021). Optical switching of topological phase in a perovskite polariton lattice. Science Advances, 7(21), eabf8049-. https://dx.doi.org/10.1126/sciadv.abf8049 2375-2548. https://hdl.handle.net/10356/154330 10.1126/sciadv.abf8049 34020955 2-s2.0-85106483269 21 7 eabf8049 en MOE2018-T3-1-002 MOE2018-T2-2-068 MOE2019-T2-1-004 MOE2017-T2-1-001 MOE2017-T2-1-040 Science Advances 10.21979/N9/XTN8VL © 2021 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S.Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC). application/pdf |
| spellingShingle | Science::Mathematics Science::Physics Edge States Transition Su, Rui Ghosh, Sanjib Liew, Timothy Chi Hin Xiong, Qihua Optical switching of topological phase in a perovskite polariton lattice |
| title | Optical switching of topological phase in a perovskite polariton lattice |
| title_full | Optical switching of topological phase in a perovskite polariton lattice |
| title_fullStr | Optical switching of topological phase in a perovskite polariton lattice |
| title_full_unstemmed | Optical switching of topological phase in a perovskite polariton lattice |
| title_short | Optical switching of topological phase in a perovskite polariton lattice |
| title_sort | optical switching of topological phase in a perovskite polariton lattice |
| topic | Science::Mathematics Science::Physics Edge States Transition |
| url | https://hdl.handle.net/10356/154330 |
| work_keys_str_mv | AT surui opticalswitchingoftopologicalphaseinaperovskitepolaritonlattice AT ghoshsanjib opticalswitchingoftopologicalphaseinaperovskitepolaritonlattice AT liewtimothychihin opticalswitchingoftopologicalphaseinaperovskitepolaritonlattice AT xiongqihua opticalswitchingoftopologicalphaseinaperovskitepolaritonlattice |