PUBLICATIONS

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.

Jingcheng Wang, Dongxiao Li, Ralf Betzholz, and Jianming Cai, Phys. Rev. Applied 18, 024040 (2022)

Our work explores the possibilities of applying the EIG to BED-based quantum-sensing tasks and provides techniques useful to integrate BED into more generalized quantum sensing systems.

Simon B. Jäger, Tom Schmit, Giovanna Morigi, Murray J. Holland, and Ralf Betzholz, Phys. Rev. Lett. 129, 063601 (2022)

We test the performance of our formalism by studying the relaxation of a NOON state and show that the dynamics captures quantum metastability.

Yuan Liu, Yaoming Chu, Shaoliang Zhang, and Jianming Cai, Phy. Rev. Applied 17, 054017 (2022)

Here, we propose a quantum optomechanical system involving exchange interaction between spin angular momentum of light and a torsional oscillator.

Qianqian Chen, Yaoming Chu, and Jianming Cai ,Phys. Rev. A 105, 042609（2022）

Here we propose to simulate the movement of a Dirac particle propagating with a superluminal velocity caused by the emergent Alcubierre warp drive spacetime using trapped ions.

Min Yu, Dongxiao Li, Jingcheng Wang, Yaoming Chu, Pengcheng Yang, Musang Gong, Nathan Goldman, Jianming Cai, Phys. Rev. Research 3, 043122 (2021)

Our results highlight the general applicability of our method to general quantum platforms, including solid-state spin systems, superconducting quantum computers and trapped ions, hence providing a versatile tool to explore the essential role of the QFI in quantum physics.

Ralf Betzholz, Yu Liu, and Jianming Cai, Phys. Rev. A 104, 012421 (2021)

We present a method for the direct measurement of the Wigner characteristic function of a thermalizing harmonic oscillator that is completely inaccessible for control or measurement.

Yaoming Chu, Pengcheng Yang, Musang Gong, Min Yu, Baiyi Yu, Martin B. Plenio, Alex Retzker, and Jianming Cai, Phys. Rev. Applied 15, 014031 (2021).

By invoking a stable classical clock, the signal phase correlations between successive measurements enable us to extract the target frequency with extremely high precision.