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Enhancing the Sensitivity of Frequency and Energy Splitting Detection by Using Exceptional Points: Application to Microcavity Sensors for Single-Particle Detection

Wiersig, Jan·2014·Physical Review Letters

Abstract

Several types of sensors used in physics are based on the detection of splittings of resonant frequencies or energy levels. We propose here to operate such sensors at so-called exceptional points, which are degeneracies in open wave and quantum systems where at least two resonant frequencies or energy levels and the corresponding eigenstates coalesce. We argue that this has great potential for enhanced sensitivity provided that one is able to measure both the frequency splitting as well as the linewidth splitting. We apply this concept to a microcavity sensor for single-particle detection. An analytical theory and numerical simulations prove a more than threefold enhanced sensitivity. We discuss the possibility to resolve individual linewidths using active optical microcavities.Received 30 January 2014DOI:https://doi.org/10.1103/PhysRevLett.112.203901© 2014 American Physical Society

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Metadata

Authors
Wiersig, J.
Venue
Physical Review Letters
Published
2014-05-20
Volume
112
Issue
20
ISSN
  • 0031-9007 (ISSN-L)
  • 1079-7114
OpenAlex
W1978986114
Cited by
1,049
References
35
FWCI
13.64
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Enhancing the Sensitivity of Frequency and Energy Splitting Detection by Using Exceptional Points: Application to Microcavity Sensors for Single-Particle Detection. https://app.cochat.ai/papers/10.1103/physrevlett.112.203901
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Wiersig, J. (2014). Enhancing the Sensitivity of Frequency and Energy Splitting Detection by Using Exceptional Points: Application to Microcavity Sensors for Single-Particle Detection. Physical Review Letters. https://doi.org/10.1103/physrevlett.112.203901

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