5 papers
Quantum separability criteria from bipartite systems to multipartite systems based on generalized Bloch representation
Linwei Li, Chunlin Yang, Hongmei Yao +3
Quantum entanglement serves as a fundamental resource in quantum information theory. This paper presents a comprehensive framework of separability criteria for detecting bipartite…
Variational quantum algorithm for generalized eigenvalue problems of non-Hermitian systems
Jiaxin Li, Zhaobing Fan, Hongmei Yao +5
Non-Hermitian generalized eigenvalue problems (GEPs) play a significant role in many practical applications, such as mechanical engineering. Based on the generalized Schur decompos…
Dictionary-based Block Encoding of Sparse Matrices with Low Subnormalization and Circuit Depth
Chunlin Yang, Zexian Li, Hongmei Yao +3
Block encoding severs as an important data input model in quantum algorithms, enabling quantum computers to simulate non-unitary operators effectively. In this paper, we propose an…
Separability and lower bounds of quantum entanglement based on realignment
Jiaxin Sun, Hongmei Yao, Shao-Ming Fei +1
The detection and estimation of quantum entanglement are the essential issues in the theory of quantum entanglement. We construct matrices based on the realignment of density matri…
Quantum entanglement estimation via symmetric measurement based positive maps
Jiaxin Li, Hongmei Yao, Shao-Ming Fei +2
We provide a class of positive and trace-preserving maps based on symmetric measurements. From these positive maps we present separability criteria, entanglement witnesses, as well…