Quantum Sensing Enhanced by Squeezing and Non-Hermitian Physics

Conference · Wed Dec 03 23:00:00 EST 2025 · No journal information

DOI:https://doi.org/10.2172/3008671· OSTI ID:3008671

Wang, Changqing ^[1]; Hu, Deyuan ^[2]; Zorzetti, Silvia ^[1]; Grassellino, Anna ^[1]; Romanenko, Alexander S. ^[1]; Zhang, Zheshen ^[2]

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1. Fermilab
2. Michigan U.

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.

• Research Organization: Michigan U.; Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
• Sponsoring Organization: US Department of Energy
• DOE Contract Number: 89243024CSC000002
• OSTI ID: 3008671
• Report Number(s): FERMILAB-POSTER-25-0269-SQMS; oai:inspirehep.net:3093120
• Journal Information: No journal information, Journal Name: No journal information
• Country of Publication: United States
• Language: English