66 citations · 239 across the 5 of their papers we have counts for
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Fundamental Sensitivity Limits for non-Hermitian Quantum Sensors
Wenkui Ding, Xiaoguang Wang, Shu Chen
Considering non-Hermitian systems implemented by utilizing enlarged quantum systems, we determine the fundamental limits for the sensitivity of non-Hermitian sensors from the persp…
Direct measurement of quantum Fisher information
Xingyu Zhang, Xiao-Ming Lu, Jing Liu +2
In the adiabatic perturbation theory, Berry curvature is related to the generalized force, and the quantum metric tensor is linked with energy fluctuation. While the former is test…
QuanEstimation: An open-source toolkit for quantum parameter estimation
Mao Zhang, Huai-Ming Yu, Haidong Yuan +3
Quantum parameter estimation promises a high-precision measurement in theory, however, how to design the optimal scheme in a specific scenario, especially under a practical conditi…
Measurement-induced nonlocality based on the relative entropy
Zhengjun Xi, Xiaoguang Wang, Yongming Li
We quantify the measurement-induced nonlocality [Luo and Fu, Phys. Rev. Lett. 106, 120401 (2011)] from the perspective of the relative entropy. This quantification leads to an oper…
Necessary and sufficient condition for saturating the upper bound of quantum discord
Zhengjun Xi, Xiao-Ming Lu, Xiaoguang Wang +1
We revisit the upper bound of quantum discord given by the von Neumann entropy of the measured subsystem. Using the Koashi-Winter relation, we obtain a trade-off between the amount…