7 papers
Ascent and descent of bounded linear operators
Xiaofei Qi, Xiaoshuo Feng, Bing Xu +1
The paper investigates ascent and descent of bounded linear operators on Banach spaces, providing characterizations for rank‑one and rank‑two operators and describing maps that pre…
Algebraic Maximal Numerical Range and its preservers of Triple Products on -Algebras
Yongqi Fan, Xiaofei Qi, Jinchuan Hou
The paper investigates the algebraic maximal numerical range in unital C*-algebras and characterizes surjective maps that preserve this range for triple products, showing they are…
-Entanglement Measure for Multipartite Systems without Convex-Roof Extensions and its Evaluation
Jie Guo, Shuyuan Yang, Jinchuan Hou +2
Multipartite entanglement underpins quantum technologies but its study is limited by the lack of universal measures, unified frameworks, and the intractability of convex-roof exten…
Detecting -nonseparability and -partite Entanglement with Generalized Skew Information and Mutually Unbiased Measurements
Xiaofei Qi, Yuyang Pang, Jinchuan Hou
Multipartite quantum entanglement, as a core quantum resource, is fundamental to the advancement of quantum science and technology. In multipartite quantum systems, there are two k…
Multipartite correlation measures and framework for multipartite quantum resources theory
Taotao Yan, Jinchuan Hou, Xiaofei Qi +1
In recent years, it has been recognized that properties of multipartite physical systems, such as genuine multipartite entanglement, can be considered as important resources for qu…
Witnessing nonlocality in quantum network of continuous-variable systems by generalized quasiprobability functions
Taotao Yan, Jinchuan Hou, Xiaofei Qi +1
Gaussian measurements can not be used to witness nonlocality in Gaussian states as well as the network nonlocality in networks of continuous-variable (CV) systems. Thus special non…