12 citations · 34 across the 12 of their papers we have counts for
13 papers
Geometric Optimization over Quantum State Spaces: Tight Uncertainty Relations and Resource Certification
Ma-Cheng Yang, Cong-Feng Qiao
Determining the fundamental limits of nonlinear functionals of quantum measurement statistics is a crucial yet generally intractable nonconvex optimization problem. We introduce a…
Witness High-Dimensional Quantum Steering via Majorization Lattice
Ma-Cheng Yang, Cong-Feng Qiao
Quantum steering enables one party to influence another remote quantum state by local measurement. While steering is fundamental to many quantum information tasks, the existing det…
Conditions for Quantum Violation of Macrorealism in Large-spin Limit
Qi-Hong Cai, Xue-Hao Yu, Ma-Cheng Yang +2
This study investigates the emergence of macroscopic classical behavior from quantum foundations via the entropic Leggett--Garg inequality. We introduce a geometric framework for d…
Entanglement Criteria Based on Quantum Fisher Information
Ao-Xiang Liu, Ma-Cheng Yang, Cong-Feng Qiao
To optimize the entanglement detection, we formulate the metrologically operational entanglement condition in quantum Fisher information by maximizing the QFI on the measurement or…
An Effective Way to Determine the Separability of Quantum State
Ma-Cheng Yang, Cong-Feng Qiao
We propose in this work a practical approach to address the longstanding and challenging problem of quantum separability, leveraging the correlation matrices of generic observables…
Quantum Uncertainty Equalities and Inequalities for Unitary Operators
Ao-Xiang Liu, Ma-Cheng Yang, Cong-Feng Qiao
We explore the uncertainty relation for unitary operators in a new way and find two uncertainty equalities for unitary operators, which are minimized by any pure states. Additional…
A Universal Quantum Certainty Relation for Arbitrary Number of Observables
Ao-Xiang Liu, Ma-Cheng Yang, Cong-Feng Qiao
We derive by lattice theory a universal quantum certainty relation for arbitrary observables in -dimensional system, which provides a state-independent maximum lower bound o…
Probing a hybrid channel for the dynamics of non-local features
Atta ur Rahman, S. M. Zangi, Ma-Cheng Yang +1
Effective information transmission is a central element in quantum information protocols, but the quest for optimal efficiency in channels with symmetrical characteristics remains…
General Schemes for Quantum Entanglement and Steering Detection
Ma-Cheng Yang, Cong-Feng Qiao
Separability problem is a long-standing tough issue in quantum information theory. In this paper, we propose a general method to detect entanglement via arbitrary measurement $\bol…
Generalized Wigner-Yanase Skew Information and the Affiliated Inequality
Ma-Cheng Yang, Cong-Feng Qiao
A family of skew information quantities is obtained, in which the well-known Wigner-Yanase skew information and quantum Fisher information stand as special cases. A transparent pro…
Leggett-type inequalities for testing nonlocal realism in multipartite systems
Abdul Sattar Khan, Ma-Cheng Yang, Cong-Feng Qiao
Nonlocal realism represents the last classical cornerstone in conflict with quantum theory, and has been shown to be largely untenable in bipartite systems [Nature 446, 871 (2007);…
An Effective Way of Characterizing the Quantum Nonlocality
Ma-Cheng Yang, Jun-Li Li, Cong-Feng Qiao
Nonlocality is a distinctive feature of quantum theory, which has been extensively studied for decades. It is found that the uncertainty principle determines the nonlocality of qua…
The Decompositions of Werner and Isotropic States
Ma-Cheng Yang, Jun-Li Li, Cong-Feng Qiao
The decompositions of separable Werner state, and also isotropic state, are well-known tough issues in quantum information theory, in this work we investigate them in the Bloch vec…