PREPRINTS

Kun Yang, Yaoming Chu, Ning Wang, Jianming Cai，arXiv: 2603.20612

Non-Hermitian quantum systems near exceptional points enhance response, yet their signal-to-noise advantage under realistic noise remains debated. Here, we show that non-Hermitian sensing could outperform Hermitian schemes in practical noise conditions, and supported by Fisher information analysis demonstrating regimes of improved measurement precision.

Xiaoyu Chen, Haibin Liu, Jianming Cai, arXiv:2512.05974

Although Ramsey-like models perform better in environments with highly controllable parameters, RPM models, which do not require precise time control and accurate prior measurement parameters, are better suited to meet the needs of biomagnetic navigation in complex and realistic natural environments.