Ultra-sensitive passive wireless sensor exploiting high-order exceptional point for weakly coupling detection
Since the quantum concept of parity-time (PT) symmetry has been introduced into the conventional inductor–capacitor resonance, strategies based on exceptional points (EP) based strategies redefine our understanding of sensitivity limitation. This considerable enhancement of sensitivity originated in...
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| Format: | Article |
| Language: | English |
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IOP Publishing
2021-01-01
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| Series: | New Journal of Physics |
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| Online Access: | https://doi.org/10.1088/1367-2630/abfc69 |
| _version_ | 1797750120634122240 |
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| author | Chao Zeng Kejia Zhu Yong Sun Guo Li Zhiwei Guo Jun Jiang Yunhui Li Haitao Jiang Yaping Yang Hong Chen |
| author_facet | Chao Zeng Kejia Zhu Yong Sun Guo Li Zhiwei Guo Jun Jiang Yunhui Li Haitao Jiang Yaping Yang Hong Chen |
| author_sort | Chao Zeng |
| collection | DOAJ |
| description | Since the quantum concept of parity-time (PT) symmetry has been introduced into the conventional inductor–capacitor resonance, strategies based on exceptional points (EP) based strategies redefine our understanding of sensitivity limitation. This considerable enhancement of sensitivity originated in exploration of the non-Hermitian physics in photonics, acoustics and electronics, which exhibits a substantial application to the miniaturization of implanted electronic sensors in medicine field. By continuously accessing the EP, the spectral response of reader ∆ ω follows a dependency of Δ ω ∼ κ ^2/3 to a weakly coupling rate (| κ | ≈ 0), which may approach the theoretical limit of sensitivity in a second-order EP system. In this paper, we experimentally demonstrate a high-order (higher than second-order) PT symmetric system for weak coupling detection, in which a third-order EP can be employed to fulfill the sensitivity of Δ ω ∼ κ ^1/2 . Particularly, we introduce the incoming wave as an effective gain to balance the loss and obtain a pair of purely real eigenfrequencies. There are absence of imaginary parts despite corresponding real parts shifts dramatically by using a neutral resonator, without a broadening of the reflection spectrum so that maintaining a high resolution on the sensitivity. This work may reveal the physical mechanics of a small perturbation at a high-order EP and promote applications in implanted medicine devices. |
| first_indexed | 2024-03-12T16:29:05Z |
| format | Article |
| id | doaj.art-0c1e3a4b8a524cffb315d9c81bffbb18 |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:29:05Z |
| publishDate | 2021-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-0c1e3a4b8a524cffb315d9c81bffbb182023-08-08T15:35:09ZengIOP PublishingNew Journal of Physics1367-26302021-01-0123606300810.1088/1367-2630/abfc69Ultra-sensitive passive wireless sensor exploiting high-order exceptional point for weakly coupling detectionChao Zeng0Kejia Zhu1Yong Sun2Guo Li3Zhiwei Guo4https://orcid.org/0000-0002-8973-307XJun Jiang5Yunhui Li6Haitao Jiang7Yaping Yang8Hong Chen9MOE Key Laboratory of Advanced Micro-Structured Materials, School of Physics Science and Engineering, Tongji University , Shanghai 200092, People’s Republic of ChinaDepartment of Electrical Engineering, Tongji University , Shanghai 201804, People’s Republic of ChinaMOE Key Laboratory of Advanced Micro-Structured Materials, School of Physics Science and Engineering, Tongji University , Shanghai 200092, People’s Republic of ChinaMOE Key Laboratory of Advanced Micro-Structured Materials, School of Physics Science and Engineering, Tongji University , Shanghai 200092, People’s Republic of ChinaMOE Key Laboratory of Advanced Micro-Structured Materials, School of Physics Science and Engineering, Tongji University , Shanghai 200092, People’s Republic of ChinaSchool of Automotive Studies, Tongji University , Shanghai 210804, People’s Republic of ChinaMOE Key Laboratory of Advanced Micro-Structured Materials, School of Physics Science and Engineering, Tongji University , Shanghai 200092, People’s Republic of ChinaMOE Key Laboratory of Advanced Micro-Structured Materials, School of Physics Science and Engineering, Tongji University , Shanghai 200092, People’s Republic of ChinaMOE Key Laboratory of Advanced Micro-Structured Materials, School of Physics Science and Engineering, Tongji University , Shanghai 200092, People’s Republic of ChinaMOE Key Laboratory of Advanced Micro-Structured Materials, School of Physics Science and Engineering, Tongji University , Shanghai 200092, People’s Republic of ChinaSince the quantum concept of parity-time (PT) symmetry has been introduced into the conventional inductor–capacitor resonance, strategies based on exceptional points (EP) based strategies redefine our understanding of sensitivity limitation. This considerable enhancement of sensitivity originated in exploration of the non-Hermitian physics in photonics, acoustics and electronics, which exhibits a substantial application to the miniaturization of implanted electronic sensors in medicine field. By continuously accessing the EP, the spectral response of reader ∆ ω follows a dependency of Δ ω ∼ κ ^2/3 to a weakly coupling rate (| κ | ≈ 0), which may approach the theoretical limit of sensitivity in a second-order EP system. In this paper, we experimentally demonstrate a high-order (higher than second-order) PT symmetric system for weak coupling detection, in which a third-order EP can be employed to fulfill the sensitivity of Δ ω ∼ κ ^1/2 . Particularly, we introduce the incoming wave as an effective gain to balance the loss and obtain a pair of purely real eigenfrequencies. There are absence of imaginary parts despite corresponding real parts shifts dramatically by using a neutral resonator, without a broadening of the reflection spectrum so that maintaining a high resolution on the sensitivity. This work may reveal the physical mechanics of a small perturbation at a high-order EP and promote applications in implanted medicine devices.https://doi.org/10.1088/1367-2630/abfc69high-order exceptional pointultra-sensitivepassive wireless sensorweakly coupling detection |
| spellingShingle | Chao Zeng Kejia Zhu Yong Sun Guo Li Zhiwei Guo Jun Jiang Yunhui Li Haitao Jiang Yaping Yang Hong Chen Ultra-sensitive passive wireless sensor exploiting high-order exceptional point for weakly coupling detection New Journal of Physics high-order exceptional point ultra-sensitive passive wireless sensor weakly coupling detection |
| title | Ultra-sensitive passive wireless sensor exploiting high-order exceptional point for weakly coupling detection |
| title_full | Ultra-sensitive passive wireless sensor exploiting high-order exceptional point for weakly coupling detection |
| title_fullStr | Ultra-sensitive passive wireless sensor exploiting high-order exceptional point for weakly coupling detection |
| title_full_unstemmed | Ultra-sensitive passive wireless sensor exploiting high-order exceptional point for weakly coupling detection |
| title_short | Ultra-sensitive passive wireless sensor exploiting high-order exceptional point for weakly coupling detection |
| title_sort | ultra sensitive passive wireless sensor exploiting high order exceptional point for weakly coupling detection |
| topic | high-order exceptional point ultra-sensitive passive wireless sensor weakly coupling detection |
| url | https://doi.org/10.1088/1367-2630/abfc69 |
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