Utilizing topological invariants for encoding and manipulating chiral phonon devices
As a fundamental degree of freedom, phonon chirality is expected to promote the development of quantum information technology just like electron spin. Currently, central to this area is the realization of efficient transmission and control of chiral information. In this paper, we propose an approach...
| Main Authors: | , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2024
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| Online Access: | https://hdl.handle.net/10356/179706 |
| _version_ | 1826117057112965120 |
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| author | Li, Xiaozhe Long, Yang Wang, Tingting Zhou, Yan Zhang, Lifa |
| author2 | School of Physical and Mathematical Sciences |
| author_facet | School of Physical and Mathematical Sciences Li, Xiaozhe Long, Yang Wang, Tingting Zhou, Yan Zhang, Lifa |
| author_sort | Li, Xiaozhe |
| collection | NTU |
| description | As a fundamental degree of freedom, phonon chirality is expected to promote the development of quantum information technology just like electron spin. Currently, central to this area is the realization of efficient transmission and control of chiral information. In this paper, we propose an approach by integrating topological theory, leveraging topologically invariant Chern numbers, to encode hexagonal lattice systems. Our investigation reveals the presence of topologically protected chiral interface states within the shared band gaps of both trivial and non-trivial system units. By precisely modulating the magnetic field distribution within the encoding system, we can effectively manipulate the topological pathways. Building upon this framework, we design and implement a chiral phonon three-port device. Through dynamic calculations, we demonstrate the transmission process of chiral information, showcasing the chiral phonon switching effect and logical OR operation. Our findings not only establish a fundamental mechanism for the manipulation and control of phonon chiral information but also provide a promising direction for research in harnessing chirality degrees of freedom in practical applications. |
| first_indexed | 2024-10-01T04:21:32Z |
| format | Journal Article |
| id | ntu-10356/179706 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T04:21:32Z |
| publishDate | 2024 |
| record_format | dspace |
| spelling | ntu-10356/1797062024-08-19T15:35:09Z Utilizing topological invariants for encoding and manipulating chiral phonon devices Li, Xiaozhe Long, Yang Wang, Tingting Zhou, Yan Zhang, Lifa School of Physical and Mathematical Sciences Physics Chiral information Electron spin As a fundamental degree of freedom, phonon chirality is expected to promote the development of quantum information technology just like electron spin. Currently, central to this area is the realization of efficient transmission and control of chiral information. In this paper, we propose an approach by integrating topological theory, leveraging topologically invariant Chern numbers, to encode hexagonal lattice systems. Our investigation reveals the presence of topologically protected chiral interface states within the shared band gaps of both trivial and non-trivial system units. By precisely modulating the magnetic field distribution within the encoding system, we can effectively manipulate the topological pathways. Building upon this framework, we design and implement a chiral phonon three-port device. Through dynamic calculations, we demonstrate the transmission process of chiral information, showcasing the chiral phonon switching effect and logical OR operation. Our findings not only establish a fundamental mechanism for the manipulation and control of phonon chiral information but also provide a promising direction for research in harnessing chirality degrees of freedom in practical applications. Published version This work was supported by the National Key Research and Development Program of China (No. 2023YFA1407001) and by the Department of Science and Technology of Jiangsu Province (No. BK20220032). X.L. acknowledges support from the Postgraduate Research and Practice Innovation Program of Jiangsu Province under Grant No. KYCX22_1544. 2024-08-19T04:52:03Z 2024-08-19T04:52:03Z 2024 Journal Article Li, X., Long, Y., Wang, T., Zhou, Y. & Zhang, L. (2024). Utilizing topological invariants for encoding and manipulating chiral phonon devices. Applied Physics Letters, 124(25), 252201-. https://dx.doi.org/10.1063/5.0201725 0003-6951 https://hdl.handle.net/10356/179706 10.1063/5.0201725 2-s2.0-85196436942 25 124 252201 en Applied Physics Letters © 2024 Author(s). Published under an exclusive license by AIP Publishing. All rights reserved. This article may be downloaded for personal use only. Any other use requires prior permission of the copyright holder. The Version of Record is available online at http://doi.org/10.1063/5.0201725 application/pdf |
| spellingShingle | Physics Chiral information Electron spin Li, Xiaozhe Long, Yang Wang, Tingting Zhou, Yan Zhang, Lifa Utilizing topological invariants for encoding and manipulating chiral phonon devices |
| title | Utilizing topological invariants for encoding and manipulating chiral phonon devices |
| title_full | Utilizing topological invariants for encoding and manipulating chiral phonon devices |
| title_fullStr | Utilizing topological invariants for encoding and manipulating chiral phonon devices |
| title_full_unstemmed | Utilizing topological invariants for encoding and manipulating chiral phonon devices |
| title_short | Utilizing topological invariants for encoding and manipulating chiral phonon devices |
| title_sort | utilizing topological invariants for encoding and manipulating chiral phonon devices |
| topic | Physics Chiral information Electron spin |
| url | https://hdl.handle.net/10356/179706 |
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