371 citations · 684 across the 10 of their papers we have counts for
10 papers
Quantum coherence in mutually unbiased bases
Yao-Kun Wang, Li-Zhu Ge, Yuan-Hong Tao
We investigate the norm of coherence of quantum states in mutually unbiased bases. We find that the sum of squared norm of coherence of the mixed state single qubit…
Comment on "Unified view of quantum correlations and quantum coherence"
Yao Yao, Li Ge, Mo Li
We show that contrary to what it is claimed in Phys. Rev. A \textbf{94}, 022329 (2016), in general the local projective measurement that induces maximal coherence loss is \textit{n…
The Geometry of Quantum Coherence for Two Qubit States
Yao-Kun Wang, Lian-He Shao, Yu-Ran Zhang
We plot the geometry of several distance-based quantifiers of coherence for Bell-diagonal states. We find that along with both norm and relative entropy of coherence change…
Maximal coherence in generic basis
Yao Yao, G. H. Dong, Li Ge +2
Since quantum coherence is an undoubted characteristic trait of quantum physics, the quantification and application of quantum coherence has been one of the long-standing central t…
Invertible condition of quantum Fisher information matrix for a mixed qubit
Ping Yue, Li Ge, Qiang Zheng
Estimating multiparamter simultaneously as precise as possible is an important goal of quantum metrolo- gy. As a first step to this end, here we give a condition determining whethe…
Quantum coherence in multipartite systems
Yao Yao, Xing Xiao, Li Ge +1
Within the unified framework of exploiting the relative entropy as a distance measure of quantum correlations, we make explicit the hierarchical structure of quantum coherence, qua…
Enhancing parameter precision of optimal quantum estimation by direct quantum feedback
Qiang Zheng, Li Ge, Yao Yao +1
Various schemes have been proposed to overcome the drawback of the decoherence on quantum-enhanced parameter estimation. Here we suggest an alternative method, quantum feedback, to…
Multiple phase estimation for arbitrary pure states under white noise
Yao Yao, Li Ge, Xing Xiao +2
In any realistic quantum metrology scenarios, the ultimate precision in the estimation of parameters is limited not only by the so-called Heisenberg scaling, but also the environme…
Multiple phase estimation in quantum cloning machines
Yao Yao, Li Ge, Xing Xiao +2
Since the initial discovery of the Wootters-Zurek no-cloning theorem, a wide variety of quantum cloning machines have been proposed aiming at imperfect but optimal cloning of quant…
Quantum fisher information in noninertial frames
Yao Yao, Xing Xiao, Li Ge +2
We investigate the performance of quantum fisher information under the Unruh-Hawking effect, where one of the observers (eg, Rob) is uniformly accelerated with respect to other par…