87 citations · 267 across the 8 of their papers we have counts for
8 papers
Optimal quantum optical control of spin in diamond
Jiazhao Tian, Tianyi Du, Yu Liu +4
The nitrogen-vacancy (NV) center spin represents an appealing candidate for quantum information processing. Besides the widely used microwave control, its coherent manipulation may…
Pulsed characteristic-function measurement of a thermalizing harmonic oscillator
Ralf Betzholz, Yu Liu, Jianming Cai
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 measuremen…
Quantum optimal control using phase-modulated driving fields
Jiazhao Tian, Haibin Liu, Yu Liu +5
Quantum optimal control represents a powerful technique to enhance the performance of quantum experiments by engineering the controllable parameters of the Hamiltonian. However, th…
Quantum Fisher information measurement and verification of the quantum Cramér-Rao bound in a solid-state qubit
Min Yu, Yu Liu, Pengcheng Yang +8
The quantum Cramér-Rao bound sets a fundamental limit on the accuracy of unbiased parameter estimation in quantum systems, relating the uncertainty in determining a parameter to th…
Quantum sensing with a single-qubit pseudo-Hermitian system
Yaoming Chu, Yu Liu, Haibin Liu +1
Quantum sensing exploits fundamental features of quantum system to achieve highly efficient measurement of physical quantities. Here, we propose a strategy to realize a single-qubi…
Modulating quantum Fisher information of qubit in dissipative cavity by coupling strength
Danping Lin, Yu Liu, Hong-Mei Zou
By using the non-Markovian master equation, we investigate the effect of the cavity and the environment on the quantum Fisher information (QFI) of an atom qubit system in a dissipa…
Observation of Floquet Raman transition in a driven solid-state spin system
Zijun Shu, Yu Liu, Qingyun Cao +5
We experimentally observe Floquet Raman transitions in the weakly driven solid state spin system of nitrogen-vacancy center in diamond. The periodically driven spin system simulate…
Adiabatic quantum parameter amplification for generic robust quantum sensing
Yu Liu, Zijun Shu, Martin B. Plenio +1
Quantum enhanced sensing provides a powerful tool for the precise measurement of physical parameters that is applicable in many areas of science and technology. The achievable gain…