Ultra-sensitivity in reconstructed exceptional systems

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外文摘要：Sensors are of fundamental importance and widely used in modern society,such as in industry and environmental monitoring,biomedical sample ingredient analysis and wireless networks.Although numerous sensors have been developed,there is a continuous demand for sensors with increased sensitivity,to detect signals that were previously undetectable.Recently,non-Hermitian degeneracies,also known as exceptional points(EPs),have attracted attention as a way of improving the responsiveness of sensors.In contrast to previous investigations,here we present a new approach to achieving ultra-sensitivity by reconstructing exceptional systems.In the reconstruction process,some eigenstates near the previous EPs are utilized,and non-reciprocal long-range couplings are introduced.The sensitivities of our reconstructed systems have improved by several orders of magnitude compared to those based on EPs.Furthermore,we design and fabricate corresponding integrated circuit sensors to demonstrate the scheme.Our work paves the way for the development of highly sensitive sensors,which have a wide range of applications in various fields.

外文关键词：

ultra-sensitivity sensornon-Hermitianreconstructed exceptional systemlong-range couplingcircuit network

作者：

Tian Chen、Deyuan Zou、Zilong Zhou、Ruiguo Wang、Yue Feng、Houjun Sun、Xiangdong Zhang

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作者单位：

Key Laboratory of Advanced Optoelectronic Quantum Architecture and Measurements of Ministry of Education,Beijing Key Laboratory of Nanophotonics &Ultrafine Optoelectronic Systems,and School of Physics,Beijing Institute of Technology,Beijing 100081,China

School of Mechatronical Engineering,Beijing Institute of Technology,Beijing 100081,China

Beijing Key Laboratory of Millimeter Wave and Terahertz Techniques,and School of Information and Electronics,Beijing Institute of Technology,Beijing 100081,China

出版年：

2024

DOI：

10.1093/nsr/nwae278

国家科学评论(英文版)

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ISSN：

年,卷(期)：2024.11(12)