4 citations · 9 across the 17 of their papers we have counts for
17 papers
Estimating the concurrence for quantum states via symmetric measurements
Hao-Fan Wang, Wen Zhou, Lin Chen +1
Concurrence is one of the most well-known entanglement measures. We show that, for arbitrary bipartite states, the lower bound of concurrence induced by symmetric measurements is a…
Entanglement distillation on symmetric two-qutrit entangled states of rank five
Zihua Song, Lin Chen, Yongge Wang
Entanglement distillation is a key step in quantum information, both theoretically and practically. It has been proven that non-positive-partial transpose (NPT) entangled states of…
Virtual Quantum Markov Chain of four-qubit systems
Zhixing Chen, Lin Chen
We extend the framework of virtual quantum Markov chains (VQMCs) from tripartite systems to the four-qubit setting. Structural criteria such as the kernel-inclusion condition are a…
Spectral characterizations of entanglement witnesses
Zhiwei Song, Lin Chen
We present a systematic investigation of the spectral properties of entanglement witnesses (EWs). Specifically, we analyze the infimum and supremum of the largest eigenvalue, the s…
Equality condition for a matrix inequality by partial transpose
Nalan Wang, Lin Chen
The partial transpose map is a linear map widely used quantum information theory. We study the equality condition for a matrix inequality generated by partial transpose, namely $\r…
Unified Construction of Genuine Multipartite Entanglement Measures Based on Geometric Mean and its Applications
Zong Wang, Zhihao Ma, Lin Chen +2
Genuine multipartite entanglement (GME) is an important resource in quantum information processing. We systematically study the measures of GME based on the geometric mean of bi-pa…
Superadditivity of Convex Roof Coherence Measures in Multipartite System
Honglin Ren, Lin Chen
In this paper, we investigate the convex roof measure of quantum coherence, with a focus on their superadditive properties. We propose sufficient conditions and establish a framewo…
Commutators with multiple unitary symmetry
Shu Li, Jie Wang, Binfeng Wang +1
Commutators are essential in quantum information theory, influencing quantum state symmetries and information storage robustness. This paper systematically investigates the charact…
Non-Perturbative Geometric Framework for Single-Qubit Gates under Always-On Couplings
Junkai Zeng, Lin Chen, Xiu-Hao Deng
In qubit arrays with always-on couplings, single-qubit gates pose a control challenge often as demanding as entangling operations. The same interactions that enable two-qubit entan…
Multipartite entangling power by von Neumann entropy
Xinyu Qiu, Zhiwei Song, Lin Chen
Quantifying the entanglement generation of a multipartite unitary operation is a key problem in quantum information processing. We introduce the definition of multipartite entangli…
On the extreme points of sets of absolulely separable and PPT states
Zhiwei Song, Lin Chen
The absolutely separable (resp. PPT) states remain separable (resp. positive partial transpose) under any global unitary operation. We present a compact form of the extreme points…
Realization of permutation groups by quantum circuit
Junchi Liu, Yangyang Ren, Yan Cao +2
In this paper, we exclusively utilize CNOT gates for implementing permutation groups generated by more than two elements. In Lemma 1, we recall that three CNOT gates are both neces…
The construction of multiqubit unextendible product bases
Caohan Cheng, Lin Chen
The unextendible orthogonal matrices (UPBs) can be used for various problems in quantum information. We provide an algorithm to check if two UPBs are non-equivalent to each other.…
Entanglement detection length of multipartite quantum states
Fei Shi, Lin Chen, Giulio Chiribella +1
Multipartite entanglement is a valuable resource for quantum technologies. However, detecting this resource can be challenging: for genuine multipartite entanglement, the detection…
Mutually-orthogonal unitary and orthogonal matrices
Zhiwei Song, Lin Chen, Saiqi Liu
We introduce the concept of n-OU and n-OO matrix sets, a collection of n mutually-orthogonal unitary and real orthogonal matrices under Hilbert-Schmidt inner product. We give a det…
Noisy Demkov-Kunike model
Lin Chen, Zhaoxin Liang
The Demkov-Kunike (DK) model, characterized by a time-dependent Rabi coupling and on-site detuning , has one of the most general forms of an…
The existence of distinguishable bases in three-dimensional subspaces of qutrit-qudit systems under one-way local operations and classical communication
Zhiwei Song, Lin Chen, Dragomir Z. Djokovic
We show that every three-dimensional subspace of qutrit-qudit complex or real systems has a distinguishable basis under one-way local operations and classical communication (LOCC).…