首页|Enhanced Sensing Mechanism Based on Shifting an Exceptional Point

Enhanced Sensing Mechanism Based on Shifting an Exceptional Point

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Non-Hermitian systems associated with exceptional points(EPs)are expected to demonstrate a giant response enhancement for various sensors.The widely investigated enhancement mechanism based on diverging from an EP should destroy the EP and further limits its applications for multiple sensing scenarios in a time sequence.To break the above limit,here,we proposed a new enhanced sensing mechanism based on shifting an EP.Different from the mechanism of diverging from an EP,our scheme is an EP nondemolition and the giant enhancement of response is acquired by a slight shift of the EP along the parameter axis induced by perturbation.The new sensing mechanism can promise the most effective response enhancement for all sensors in the case of multiple sensing in a time sequence.To verify our sensing mechanism,we construct a mass sensor and a gyroscope with concrete physical implementations.Our work will deepen the understanding of EP-based sensing and inspire designing various high-sensitivity sensors in different physical systems.

Xuan Mao、Guo-Qing Qin、Hao Zhang、Bo-Yang Wang、Dan Long、Gui-Qin Li、Gui-Lu Long

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Department of Physics,State Key Laboratory of Low-Dimensional Quantum Physics,Tsinghua University,Beijing 100084,China

Beijing Institute of Radio Measurement,The Second Academy of China Aerospace Science and Industry Corporation(CASIC),Beijing 100854,China

Purple Mountain Laboratories,Nanjing 211111,China

Frontier Science Center for Quantum Information,Beijing 100084,China

Beijing Academy of Quantum Information Sciences,Beijing 100193,China

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2024

10.34133/research.0260

研究(英文)

研究(英文)

CSTPCD
ISSN：
年,卷(期)：2024.2024(3)