Realization of Hofstadter's butterfly and a one-way edge mode in a polaritonic system
We present a scheme to generate an artificial gauge field for the system of neutral bosons, represented by polaritons in micropillars arranged into a square lattice. The splitting between the two polarizations of the micropillars breaks the time-reversal symmetry (TRS) and results in the effective p...
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| Formato: | Journal Article |
| Idioma: | English |
| Publicado em: |
2018
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| Acesso em linha: | https://hdl.handle.net/10356/90173 http://hdl.handle.net/10220/47196 |
| _version_ | 1826113229314588672 |
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| author | Banerjee, Rimi Liew, Timothy Chi Hin Kyriienko, O. |
| author2 | School of Physical and Mathematical Sciences |
| author_facet | School of Physical and Mathematical Sciences Banerjee, Rimi Liew, Timothy Chi Hin Kyriienko, O. |
| author_sort | Banerjee, Rimi |
| collection | NTU |
| description | We present a scheme to generate an artificial gauge field for the system of neutral bosons, represented by polaritons in micropillars arranged into a square lattice. The splitting between the two polarizations of the micropillars breaks the time-reversal symmetry (TRS) and results in the effective phase-dependent hopping between cavities. This can allow for engineering a nonzero flux on the plaquette, corresponding to an artificial magnetic field. Changing the phase, we observe a characteristic Hofstadter's butterfly pattern and the appearance of chiral edge states for a finite-size structure. For long-lived polaritons, we show that the propagation of wave packets at the edge is robust against disorder. Moreover, given the inherent driven-dissipative nature of polariton lattices, we find that the system can exhibit topological lasing, recently discovered for active ring cavity arrays. The results point to a static way to realize artificial magnetic field in neutral spinful systems, avoiding the periodic modulation of the parameters or strong spin-orbit interaction. Ultimately, the described system can allow for high-power topological single-mode lasing which is robust to imperfections. |
| first_indexed | 2024-10-01T03:19:46Z |
| format | Journal Article |
| id | ntu-10356/90173 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T03:19:46Z |
| publishDate | 2018 |
| record_format | dspace |
| spelling | ntu-10356/901732023-02-28T20:01:58Z Realization of Hofstadter's butterfly and a one-way edge mode in a polaritonic system Banerjee, Rimi Liew, Timothy Chi Hin Kyriienko, O. School of Physical and Mathematical Sciences Hofstadter’s Butterfly Polaritonic DRNTU::Science::Physics We present a scheme to generate an artificial gauge field for the system of neutral bosons, represented by polaritons in micropillars arranged into a square lattice. The splitting between the two polarizations of the micropillars breaks the time-reversal symmetry (TRS) and results in the effective phase-dependent hopping between cavities. This can allow for engineering a nonzero flux on the plaquette, corresponding to an artificial magnetic field. Changing the phase, we observe a characteristic Hofstadter's butterfly pattern and the appearance of chiral edge states for a finite-size structure. For long-lived polaritons, we show that the propagation of wave packets at the edge is robust against disorder. Moreover, given the inherent driven-dissipative nature of polariton lattices, we find that the system can exhibit topological lasing, recently discovered for active ring cavity arrays. The results point to a static way to realize artificial magnetic field in neutral spinful systems, avoiding the periodic modulation of the parameters or strong spin-orbit interaction. Ultimately, the described system can allow for high-power topological single-mode lasing which is robust to imperfections. Ministry of Education (MOE) Published version 2018-12-26T04:04:02Z 2019-12-06T17:42:22Z 2018-12-26T04:04:02Z 2019-12-06T17:42:22Z 2018 Journal Article Banerjee, R., Liew, T. C. H., & Kyriienko, O. (2018). Realization of Hofstadter's butterfly and a one-way edge mode in a polaritonic system. Physical Review B, 98(7), 075412-. doi: 10.1103/PhysRevB.98.075412 2469-9950 https://hdl.handle.net/10356/90173 http://hdl.handle.net/10220/47196 10.1103/PhysRevB.98.075412 7 98 075412 en M0E2017-T2-1-001 Physical Review B Physical Review B 10.21979/N9/WI8BQF © 2018 American Physical Society. This paper was published in Physical Review B and is made available as an electronic reprint (preprint) with permission of American Physical Society. The published version is available at: [http://dx.doi.org/10.1103/PhysRevB.98.075412]. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law. 7 p. application/pdf |
| spellingShingle | Hofstadter’s Butterfly Polaritonic DRNTU::Science::Physics Banerjee, Rimi Liew, Timothy Chi Hin Kyriienko, O. Realization of Hofstadter's butterfly and a one-way edge mode in a polaritonic system |
| title | Realization of Hofstadter's butterfly and a one-way edge mode in a polaritonic system |
| title_full | Realization of Hofstadter's butterfly and a one-way edge mode in a polaritonic system |
| title_fullStr | Realization of Hofstadter's butterfly and a one-way edge mode in a polaritonic system |
| title_full_unstemmed | Realization of Hofstadter's butterfly and a one-way edge mode in a polaritonic system |
| title_short | Realization of Hofstadter's butterfly and a one-way edge mode in a polaritonic system |
| title_sort | realization of hofstadter s butterfly and a one way edge mode in a polaritonic system |
| topic | Hofstadter’s Butterfly Polaritonic DRNTU::Science::Physics |
| url | https://hdl.handle.net/10356/90173 http://hdl.handle.net/10220/47196 |
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