Combining Squeezing and Transition Sensitivity Resources for Quantum Metrology by Asymmetric Non-Linear Rabi Model (Adv. Quantum Technol. 7/2025)

Squeezing and transition criticality are two major sensitivity resources for quantum metrology (QM), combination of them may yield an upgraded QM protocol. In article number 2400630, Zu-Jian Ying proposes that such a combination is feasible in asymmetric non-linear light-matter interaction. The protocol not only enhances measurement precision (MP) by several orders but also has advantages of globally high MP and dramatically reduced preparation time of probe state. This work establishes a paradigmatic case of combining different sensitivity resources to manipulate QM and maximize MP.