2023

Yaoming Chu and Jianming Cai, Nature Physics 19, 933 (2023) (News & Views)

A quantum engineering technique powered by disorder ofers access to local correlation functions down to single-site resolution in nuclear spin ensembles, allowing the study of both spin and energy hydrodynamics.

Yaoming Chu, Xiangbei Li and Jianming Cai, Phys. Rev. Lett. 130, 170801（2023）

Our main result establishes a strong precision limit of quantum metrology accounting for the complexity of many-body quantum resource state preparation and reveals a fundamental constraint for reaching the Heisenberg limit.

Jingcheng Wang, Shaoliang Zhang, Jianming Cai, Zhenyu Liao, Christian Arenz and Ralf Betzholz, Phys. Rev. A 108, 022408 (2023)

We find that before the mean value of the logarithm of the condition number as a function of the driving time asymptotically approaches the value predicted for a Haar-random evolution it reaches a plateau whose length increases with the system size.

Simon B. Jäger and Ralf Betzholz, Phys. Rev. A 108, 013110 (2023)

We demonstrate that this effective master equation can also be used to describe cooling in systems with light-matter interactions. And we present how the effective master equation can be extended to the case of nonvanishing mean thermal occupations of the bosonic mode.

Musang Gong, Min Yu, Ralf Betzholz, Yaoming Chu, Pengcheng Yang, Zhenyu Wang and Jianming Cai, Phys. Rev. A 107, L040602（2023）

These results provide a powerful tool for coherent spin manipulation in the context of quantum sensing and quantum computation.

Jiazhao Tian, Ressa S. Said, Fedor Jelezko, Jianming Cai and Liantuan Xiao, Sensors 23(6), 3244 (2023)

In the case of the state transforming of an NV center ensemble, the B-PM method reduced the time consumption by more than 90% compared with the conventional standard Fourier basis (SFB) method while increasing the average fidelity from 0.894 to 0.905.