10 citations · 16 across the 8 of their papers we have counts for
9 papers · 1 filter
Radial Coarse Graining Restores Vacuum Majorization in Wigner Phase Space
Ao-Xiang Liu, Cong-Feng Qiao
Quantum uncertainty limits how strongly Wigner functions can concentrate in phase space. It is commonly conjectured that the vacuum Wigner function continuously majorizes that of a…
Ascertaining higher-order quantum correlations in high energy physics
Ao-Xiang Liu, Cong-Feng Qiao
Nonlocality is a peculiar nature of quanta and it stands as an important quantum resource in application. Yet mere linear property of it, viz. the first order in moment, has been e…
From Local Nonclassicality to Entanglement: A Convexity Law for Single-Excitation Dynamics
Atta ur Rahman, Ao-xiang Liu, M. Y. Abd-Rabbou +1
We prove a simple dynamical law for excitation-preserving interactions: the {sum of local Wigner negativities} is upper-bounded by a fixed budget set by the initially excited state…
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…
Probabilistic Coherence Transformation Under Strictly Incoherent Operation
Ao-Xiang Liu, Cong-Feng Qiao
The coherence transformation is pivotal for quantum technologies, which cannot always be accomplished deterministically. We investigate the probabilistic coherence transformation u…
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…
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…
Gravitational cat states as a resource for quantum information processing
Atta ur Rahman, Ao-Xiang Liu, Saeed Haddadi +1
We investigate how resourceful gravitational cat states are to preserve quantum correlations. In this regard, we explore the dynamics of gravitational cat states under different si…
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…