Tunable bifunctional acoustic logic gates based on topological valley transport

Valley degree of freedom has attracted great interest in the realization of topological edge states in acoustic systems owing to its rich valley-contrasting physics and great potential applications. However, the practice of valley acoustic topological insulators (ATIs) in designing tunable multifunc...

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Main Authors: Ge, Yong, Shi, Binjie, Jia, Ding, Sun, Hong-Xiang, Xue, Haoran, Yuan, Shou-Qi, Zhang, Baile
Other Authors: School of Physical and Mathematical Sciences
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Language:English
Published: 2024
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Online Access:https://hdl.handle.net/10356/173036
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Institution: Nanyang Technological University
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spelling sg-ntu-dr.10356-1730362024-01-15T15:35:21Z Tunable bifunctional acoustic logic gates based on topological valley transport Ge, Yong Shi, Binjie Jia, Ding Sun, Hong-Xiang Xue, Haoran Yuan, Shou-Qi Zhang, Baile School of Physical and Mathematical Sciences The Photonics Institute Centre for Disruptive Photonic Technologies (CDPT) Science::Physics Acoustic Systems Symmetric Distributions Valley degree of freedom has attracted great interest in the realization of topological edge states in acoustic systems owing to its rich valley-contrasting physics and great potential applications. However, the practice of valley acoustic topological insulators (ATIs) in designing tunable multifunctional devices without changing their structures still remains a great challenge. Here, we show that the antisymmetric and symmetric distribution nature of valley edge states in the valley ATIs with two different domain walls can be utilized to design tunable robust acoustic logic gates (ALGs). We experimentally demonstrate two types of tunable bifunctional ALGs (denoted as ALG-I and ALG-II), in which ALG-I is composed of a single domain wall, and ALG-II is constructed by a bent topological waveguide containing two domain walls. For ALG-I, the functions of logical inclusive OR and logical exclusive OR (denoted as OR and XOR, respectively) can be switched by actively tuning the phases of two input sound sources without changing the structure. For ALG-II, the logic functions OR and XOR can be implemented through the left and right incidences, respectively, of a pair of sound sources. Similarly, the switching of the logic functions OR and XOR on both sides of ALG-II can be realized by simply adjusting the phases of two sound sources. The designed ALGs have the advantages of simple structure, high robustness, as well as active tunability, leading to a wide range of potential applications in integrated acoustics, acoustic communications, and information processing. Ministry of Education (MOE) National Research Foundation (NRF) Published version This work was supported by the National Natural Science Foundation of China under Grant Nos. 12274183 and 12174159, the National Key Research and Development Program of China under Grant No. 2020YFC1512403, the Singapore National Research Foundation (NRF) under Grant No. NRF-CRP23-2019- 0007, and the Singapore Ministry of Education (MOE) under Grant No. MOE2019-T2-2-085. 2024-01-10T00:58:00Z 2024-01-10T00:58:00Z 2023 Journal Article Ge, Y., Shi, B., Jia, D., Sun, H., Xue, H., Yuan, S. & Zhang, B. (2023). Tunable bifunctional acoustic logic gates based on topological valley transport. Applied Physics Letters, 123(17), 171703-1-171703-7. https://dx.doi.org/10.1063/5.0172277 0003-6951 https://hdl.handle.net/10356/173036 10.1063/5.0172277 2-s2.0-85175527736 17 123 171703-1 171703-7 en NRF-CRP23-2019-0007 MOE2019-T2-2-085 Applied Physics Letters © 2023 Author(s). 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/10.1063/5.0172277 application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Science::Physics
Acoustic Systems
Symmetric Distributions
spellingShingle Science::Physics
Acoustic Systems
Symmetric Distributions
Ge, Yong
Shi, Binjie
Jia, Ding
Sun, Hong-Xiang
Xue, Haoran
Yuan, Shou-Qi
Zhang, Baile
Tunable bifunctional acoustic logic gates based on topological valley transport
description Valley degree of freedom has attracted great interest in the realization of topological edge states in acoustic systems owing to its rich valley-contrasting physics and great potential applications. However, the practice of valley acoustic topological insulators (ATIs) in designing tunable multifunctional devices without changing their structures still remains a great challenge. Here, we show that the antisymmetric and symmetric distribution nature of valley edge states in the valley ATIs with two different domain walls can be utilized to design tunable robust acoustic logic gates (ALGs). We experimentally demonstrate two types of tunable bifunctional ALGs (denoted as ALG-I and ALG-II), in which ALG-I is composed of a single domain wall, and ALG-II is constructed by a bent topological waveguide containing two domain walls. For ALG-I, the functions of logical inclusive OR and logical exclusive OR (denoted as OR and XOR, respectively) can be switched by actively tuning the phases of two input sound sources without changing the structure. For ALG-II, the logic functions OR and XOR can be implemented through the left and right incidences, respectively, of a pair of sound sources. Similarly, the switching of the logic functions OR and XOR on both sides of ALG-II can be realized by simply adjusting the phases of two sound sources. The designed ALGs have the advantages of simple structure, high robustness, as well as active tunability, leading to a wide range of potential applications in integrated acoustics, acoustic communications, and information processing.
author2 School of Physical and Mathematical Sciences
author_facet School of Physical and Mathematical Sciences
Ge, Yong
Shi, Binjie
Jia, Ding
Sun, Hong-Xiang
Xue, Haoran
Yuan, Shou-Qi
Zhang, Baile
format Article
author Ge, Yong
Shi, Binjie
Jia, Ding
Sun, Hong-Xiang
Xue, Haoran
Yuan, Shou-Qi
Zhang, Baile
author_sort Ge, Yong
title Tunable bifunctional acoustic logic gates based on topological valley transport
title_short Tunable bifunctional acoustic logic gates based on topological valley transport
title_full Tunable bifunctional acoustic logic gates based on topological valley transport
title_fullStr Tunable bifunctional acoustic logic gates based on topological valley transport
title_full_unstemmed Tunable bifunctional acoustic logic gates based on topological valley transport
title_sort tunable bifunctional acoustic logic gates based on topological valley transport
publishDate 2024
url https://hdl.handle.net/10356/173036
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