One-way reflection-free exciton-polariton spin-filtering channel
We consider theoretically exciton-polaritons in a strip of honeycomb lattice with zigzag edges and it is shown that the interplay among the spin-orbit coupling, Zeeman splitting, and an onsite detuning between sublattices can give rise to a band structure where all the edge states of the system spli...
| Main Authors: | , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2020
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/137283 |
| _version_ | 1826124760089624576 |
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| author | Mandal, S. Banerjee, R. Liew, T. C. H. |
| author2 | School of Physical and Mathematical Sciences |
| author_facet | School of Physical and Mathematical Sciences Mandal, S. Banerjee, R. Liew, T. C. H. |
| author_sort | Mandal, S. |
| collection | NTU |
| description | We consider theoretically exciton-polaritons in a strip of honeycomb lattice with zigzag edges and it is shown that the interplay among the spin-orbit coupling, Zeeman splitting, and an onsite detuning between sublattices can give rise to a band structure where all the edge states of the system split in energy. Within an energy interval, one of the spin polarized edge states resides with the gap-less bulk having opposite spin. Being surrounded by opposite spin and the absence of the backward propagating edge state ensures both reflection free and feedback suppressed one-way flow of polaritons with one particular spin in the system. The edge states in this system are more
localized than those in the standard topological polariton systems and are fully spin polarized. This paves the way for feedback free spin-selective polariton channels for transferring information in polariton networks. |
| first_indexed | 2024-10-01T06:25:38Z |
| format | Journal Article |
| id | ntu-10356/137283 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T06:25:38Z |
| publishDate | 2020 |
| record_format | dspace |
| spelling | ntu-10356/1372832023-10-24T06:12:53Z One-way reflection-free exciton-polariton spin-filtering channel Mandal, S. Banerjee, R. Liew, T. C. H. School of Physical and Mathematical Sciences Science::Physics Spin Filter Exciton Polariton We consider theoretically exciton-polaritons in a strip of honeycomb lattice with zigzag edges and it is shown that the interplay among the spin-orbit coupling, Zeeman splitting, and an onsite detuning between sublattices can give rise to a band structure where all the edge states of the system split in energy. Within an energy interval, one of the spin polarized edge states resides with the gap-less bulk having opposite spin. Being surrounded by opposite spin and the absence of the backward propagating edge state ensures both reflection free and feedback suppressed one-way flow of polaritons with one particular spin in the system. The edge states in this system are more localized than those in the standard topological polariton systems and are fully spin polarized. This paves the way for feedback free spin-selective polariton channels for transferring information in polariton networks. Published version 2020-03-13T06:13:55Z 2020-03-13T06:13:55Z 2019 Journal Article Mandal, S., Banerjee, R., & Liew, T. C. H. (2019). One-way reflection-free exciton-polariton spin-filtering channel. Physical Review Applied, 12(5), doi:10.1103/PhysRevApplied.12.054058 2331-7019 https://hdl.handle.net/10356/137283 10.1103/PhysRevApplied.12.054058 2-s2.0-85076427577 5 12 054058-1 054058-6 en Physical Review Applied 10.21979/N9/4EXC8G © 2019 American Physical Society (APS). All rights reserved. This paper was published in Physical Review Applied and is made available with permission of American Physical Society (APS). application/pdf |
| spellingShingle | Science::Physics Spin Filter Exciton Polariton Mandal, S. Banerjee, R. Liew, T. C. H. One-way reflection-free exciton-polariton spin-filtering channel |
| title | One-way reflection-free exciton-polariton spin-filtering channel |
| title_full | One-way reflection-free exciton-polariton spin-filtering channel |
| title_fullStr | One-way reflection-free exciton-polariton spin-filtering channel |
| title_full_unstemmed | One-way reflection-free exciton-polariton spin-filtering channel |
| title_short | One-way reflection-free exciton-polariton spin-filtering channel |
| title_sort | one way reflection free exciton polariton spin filtering channel |
| topic | Science::Physics Spin Filter Exciton Polariton |
| url | https://hdl.handle.net/10356/137283 |
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