DOE OSTI · 3008671
Quantum Sensing Enhanced by Squeezing and Non-Hermitian Physics
Abstract
We find extraordinary enhancement of sensitivity by integrating non-Hermitian and squeezing effects in a general framework for quantum sensing. When a bosonic-mode sensor operates at the parametric oscillation (PO) threshold and an exceptional point (EP), the sensing precision exhibits a quartic scaling with the perturbation strength, leading to ultrahigh sensitivity. The result generalizes to multimode squeezed-state sensors with higher-order EPs, with potential applicability across a wide range of quantum sensing platforms.
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Wang, Changqing [Fermilab], Hu, Deyuan [Michigan U.], Zorzetti, Silvia [Fermilab], Grassellino, Anna [Fermilab], Romanenko, Alexander S. [Fermilab], Zhang, Zheshen [Michigan U.]. 2025-12-04. Quantum Sensing Enhanced by Squeezing and Non-Hermitian Physics. https://doi.org/10.2172/3008671
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