19 citations · 108 across the 19 of their papers we have counts for
19 papers
Mean-State Entropy Hierarchies and Classical Communication through Quantum Convolutions
Chunhe Xiong, Sunho Kim, Qing-hua Zhang +2
Quantum convolution provides a discrete-variable analogue of classical convolution, with the mean state capturing the stabilizer structure preserved under repeated convolution. We…
Tighter entropic uncertainty relations in the presence of quantum memories for complete sets of mutually unbiased bases
Qing-Hua Zhang, Cong Xu, Jing-Feng Wu +1
Entropic uncertainty relations provide an information-theoretic framework for quantifying the fundamental indeterminacy inherent in quantum mechanics. We propose more stringent qua…
Entanglement certification from moments of positive maps
Qing-Hua Zhang, Xiaoyu Ma, Shao-Ming Fei
Entanglement certification is crucial in physical experiments, particularly when only partial knowledge of the quantum state is available. In this context, we present an entangleme…
Tightening the entropic uncertainty relations with quantum memory in a multipartite scenario
Cong Xu, Qing-Hua Zhang, Tao Li +1
The quantum uncertainty principle stands as a cornerstone and a distinctive feature of quantum mechanics, setting it apart from classical mechanics. We introduce a tripartite quant…
Uncertainty of quantum channels based on symmetrized \r{ho}-absolute variance and modified Wigner-Yanase skew information
Cong Xu, Qing-Hua Zhang, Shao-Ming Fei
We present the uncertainty relations in terms of the symmetrized \r{ho}-absolute variance, which generalizes the uncertainty relations for arbitrary operator (not necessarily Hermi…
Coherence-mixedness trade-offs
Qing-Hua Zhang, Shao-Ming Fei
Quantum coherence constitutes a foundational characteristic of quantum mechanics and is integral to emerging quantum resource theories. However, quantum coherence is severely restr…
Uncertainty relations based on the -absolute variance for quantum channels
Cong Xu, Wen Zhou, Qing-Hua Zhang +1
Uncertainty principle reveals the intrinsic differences between the classical and quantum worlds, which plays a significant role in quantum information theory. By using -absolut…
A note on Wigner-Yanase skew information-based uncertainty of quantum channels
Qing-Hua Zhang, Jing-Feng Wu, Shao-Ming Fei
The variance of quantum channels involving a mixed state gives a hybrid of classical and quantum uncertainties. We seek certain decomposition of variance into classical and quantum…
Summation and product forms of uncertainty relations based on metric-adjusted skew information
Cong Xu, Qing-Hua Zhang, Shao-Ming Fei
Uncertainty principle is one of the most essential features in quantum mechanics and plays profound roles in quantum information processing. We establish tighter summation form unc…
Parameterized steering criteria via correlation matrices
Qing-Hua Zhang, Lemin Lai, Shao-Ming Fei
We study the steerability for arbitrary dimensional bipartite systems based on the correlation matrices given by local special unitary groups. We present families of steering crite…
Entropic uncertainty relations with quantum memory in a multipartite scenario
Qing-Hua Zhang, Shao-Ming Fei
Entropic uncertainty relations demonstrate the intrinsic uncertainty of nature from an information-theory perspective. Recently, a quantum-memory-assisted entropic uncertainty rela…
Wigner-Yanase skew information-based uncertainty relations for quantum channels
Qing-Hua Zhang, Shao-ming Fei
The Wigner-Yanase skew information stands for the uncertainty about the information on the values of observables not commuting with the conserved quantity. The Wigner-Yanase skew i…
Parameterized Multi-observable Sum Uncertainty Relations
Jing-Feng Wu, Qing-Hua Zhang, Shao-Ming Fei
The uncertainty principle is one of the fundamental features of quantum mechanics and plays an essential role in quantum information theory. We study uncertainty relations based on…
A Fisher information-based incompatibility criterion for quantum channels
Qing-Hua Zhang, Ion Nechita
We introduce a new incompatibility criterion for quantum channels, based on the notion of (quantum) Fisher information. Our construction is based on a similar criterion for quantum…
Product and sum uncertainty relations based on metric-adjusted skew information
Xiaoyu Ma, Qing-Hua Zhang, Shao-Ming Fei
The metric-adjusted skew information establishes a connection between the geometrical formulation of quantum statistics and the measures of quantum information. We study uncertaint…
A note on uncertainty relations of metric-adjusted skew information
Qing-Hua Zhang, Jing-Feng Wu, Xiaoyu Ma +1
The uncertainty principle is one of the fundamental features of quantum mechanics and plays a vital role in quantum information processing. We study uncertainty relations based on…
Tighter sum uncertainty relations via variance and Wigner-Yanase skew information for N incompatible observables
Qing-Hua Zhang, Shao-Ming Fei
We study the sum uncertainty relations based on variance and skew information for arbitrary finite N quantum mechanical observables. We derive new uncertainty inequalities which im…
A note on uncertainty relations of arbitrary N quantum channels
Qing-Hua Zhang, Jing-Feng Wu, Shao-Ming Fei
Uncertainty principle plays a vital role in quantum physics. The Wigner-Yanase skew information characterizes the uncertainty of an observable with respect to the measured state. W…
A sufficient Entanglement Criterion Based On Quantum Fisher Information and Variance
Qing-Hua Zhang, Shao-Ming Fei
We derive criterion in the form of inequality based on quantum Fisher information and quantum variance to detect multipartite entanglement. It can be regarded as complementary of t…