PUBLICATIONS

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.

Qianqian Chen, Haibin Liu, Min Yu, Shaoliang Zhang, and Jianming Cai, Phys. Rev. A 102, 052606 (2020)

We propose a dynamical decoupling scheme that sustains the topological phase transition overcoming the influence of dephasing. Therefore, the proposal would facilitate the observation of topological frequency conversion in the solid-state spin system, e.g., nitrogen-vacancy center in diamond.

Jiazhao Tian, Haibin Liu, Yu Liu, Pengcheng Yang, Ralf Betzholz, Ressa S. Said, Fedor Jelezko, and Jianming Cai, Phys. Rev. A 102, 043707 (2020)

Under environmental noise, an XY-8 sequence constituted by optimized gates prolongs the coherence time by 50% compared with standard rectangular pulses in our numerical simulations, showing the application potential of our phase-modulated method in improving the precision of signal detection in the field of quantum sensing.

Jiazhao Tian, Tianyi Du, Yu Liu, Haibin Liu, Fangzhou Jin, Ressa S. Said, and Jianming Cai, Phys. Rev. A 100, 012110 (2019)

Here, we adopt the strategy of optimal quantum control to accelerate coherent-state transfer in the ground-state manifold of the NV center spin using a laser. The results demonstrate improved performance in both the speed and the fidelity of coherent-state transfer which will be useful for optical control of the NV center spin in diamond.

Wanlu Song, Tianyi Du, Haibin Liu, Ralf Betzholz and Jianming Cai, New J. Phys. 22, 063029 (2020)

We propose a nanotube double quantum dot spin transducer that allows to achieve steady-state entanglement between nitrogen-vacancy center spins in diamond with spatial separations up to micrometers.

Qianqian Chen, Jianming Cai, and Shaoliang Zhang, Phys. Rev. A 101, 043614 (2020)

Our work provides a model based on ultracold atoms towards the implementation of versatile topological matters and topological phenomena in condensed matter systems.

Wanlu Song, Tianyi Du, Haibin Liu, Martin B. Plenio, and Jianming Cai, Phys. Rev. Applied 12, 054025 (2019)

Our analysis demonstrates that the platform can achieve sensitivities that allow for the implementation of single-molecule magnetic resonance spectroscopy and therefore opens a promising route towards integrated on-chip quantum-sensing devices.

Juan Mauricio Torres, Ralf Betzholz, Marc Bienert, J. Phys. A 52, 08LT02 (2019)

Both the weak- and the strong-coupling regime, which includes combined decay mechanisms, are solved in this work.

Tianyi Du, Jianming Cai, and Haibin Liu, Phys. Rev. A 98, 033823 (2018)

Here, we propose a hybrid scanning microscope scheme under ambient conditions by using single-nitrogen-vacancy-center spin in diamond to achieve high spatial resolution.