An "exceptional" magnetic sensor

Zhenhuan Yi; Girish S. Agarwal; Marlan O. Scully

doi:10.1038/s41377-025-02005-7

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An "exceptional" magnetic sensor

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- An "exceptional" magnetic sensor
- An "exceptional" magnetic sensor
- Light: Science & Applications 2025年14卷第12期页码：3788-3789
- Affiliations：
  
  Institute for Quantum Science and Engineering, Texas A&M University, College Station, TX 77843, USA
- Author bio：
  
  Marlan O. Scully (scully@tamu.edu)
- Funds：
- DOI：10.1038/s41377-025-02005-7
  中图分类号：
- 网络出版：2025-10-11，
  
  纸质出版：2025-12-31
- Accepted：
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Zhenhuan Yi, Girish S. Agarwal, Marlan O. Scully. An "exceptional" magnetic sensor[J]. Light: Science & Applications, 2025,14(12):3788-3789.

Yi, Z., Agarwal, G.S. & Scully, M.O. An "exceptional" magnetic sensor. Light: Science & Applications, 14, 3788-3789 (2025).
Zhenhuan Yi, Girish S. Agarwal, Marlan O. Scully. An "exceptional" magnetic sensor[J]. Light: Science & Applications, 2025,14(12):3788-3789. DOI： 10.1038/s41377-025-02005-7.

Yi, Z., Agarwal, G.S. & Scully, M.O. An "exceptional" magnetic sensor. Light: Science & Applications, 14, 3788-3789 (2025). DOI： 10.1038/s41377-025-02005-7.

摘要

Abstract

Building a sensitive magnetic field sensor is non-trivial; building a more sensitive one by adding extra loss to the sensor is counterintuitive

but with innovative ideas from non-Hermitian physics like an exceptional point

a new magnetic field sensor first of its kind paves the way for broader applications of similar techniques.

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references

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Chen, W. J. et al. Exceptional points enhance sensing in an optical microcavity. Nature 548 , 192–196 (2017)..

Kononchuk, R. et al. Exceptional-point-based accelerometers with enhanced signal-to-noise ratio. Nature 607 , 697–702 (2022)..

Ruan, Y. P. et al. Observation of loss-enhanced magneto-optical effect. Nat. Photonics 19 , 109–115, https://doi.org/10.1038/s41566-024-01592-y (2025)..

Lau, H. K. & Clerk, A. A. Fundamental limits and non-reciprocal approaches in non-Hermitian quantum sensing. Nat. Commun. 9 , 4320 (2018)..

Nair, J. M. P., Mukhopadhyay, D. & Agarwal, G. S. Enhanced sensing of weak anharmonicities through coherences in dissipatively coupled anti-PT symmetric systems. Phys. Rev. Lett. 126 , 180401 (2021)..

Raskatla, V. et al. Continuous space-time crystal state driven by nonreciprocal optical forces. Phys. Rev. Lett. 133 , 136202 (2024)..

Svidzinsky, A. A., Yuan, L. Q. & Scully, M. O. Quantum amplification by superradiant emission of radiation. Phys. Rev. X 3 , 041001 (2013)..

Wang, Z. X. & Wei, L. Functional fibers redefine wearables. Opt. Photonics N. 36 , 26–33 (2025)..

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