2025

Qingyun Cao, Genko T. Genov, Yaoming Chu, Jianming Cai, Yu Liu, Alex Retzker, Fedor Jelezko, Phys. Rev. Lett. 135, 250806 (2025)

We demonstrate experimentally a protocol for superresolution quantum sensing that resolves two incoherent signals with sub-kHz frequency separation using a solid-state spin sensor. By utilizing the naturally occurring signal noise, we identify optimal interrogation times to make the estimation uncertainty remains finite even when the signal frequencies approach each other.

Ning Wang, Jianming Cai, Chao Lei. Phys. Rev. Lett. 135, 046901(2025)

We propose a novel magnetic imaging protocol that achieves angstrom-scale resolution by combining spin defects in van der Waals materials and terahertz (THz) scattering scanning near-field optical microscopy.

Xiangbei Li, Yaoming Chu, Shaoliang Zhang, Jianming Cai, Phys. Rev. B112, 024302 (2025)

We present a quench-interferometric framework to probe zero-temperature quantum phase transitions (QPTs), which circumvents the challenging preparation of a many-body ground state, advancing the study of QPTs with experimentally practical quantum simulation techniques and revealing a stimulating interplay between quantum metrology and non-equilibrium many-body physics.