17 citations · 95 across the 21 of their papers we have counts for
21 papers
Characterizing local unitary equivalence of multipartite states by local unitary Bargmann invariants
Yi Shen, Lin Chen, Shao-Ming Fei
Local unitary (LU) equivalent states are crucial for understanding the structure of quantum entanglement. We investigate the LU equivalence based on the LU Bargmann invariants (LUB…
Decidabilities of local unitary equivalence for entanglement witnesses and states
Yi Shen, Lin Chen
The problem of determining whether two states are equivalent by local unitary (LU) operations is important for quantum information processing. In this paper we propose an alternati…
An experimental proposal certification for any three-qubit generalized Greenberger-Horne-Zeilinger states based on the fine-grained steering inequality
Zhi-Hao Bian, Jia-Qi Sun, Yi Shen
Multi-party quantum steering is an important concept in quantum information theory and quantum mechanics, typically related to quantum entanglement and quantum nonlocality. It enab…
The detection power of real entanglement witnesses under local unitary equivalence
Yi Shen, Lin Chen, Zhihao Bian
The imaginary unit has recently been experimentally proven to be indispensable for quantum mechanics. We study the differences in detection power between real and complex entan…
A characterization of entangled two-qubit states via partial-transpose-moments
Lin Zhang, Ming-Jing Zhao, Lin Chen +2
Although quantum entanglement is an important resource, its characterization is quite challenging. The partial transposition is a common method to detect bipartite entanglement. In…
The additivity of states uniquely determined by marginals
Yi Shen, Lin Chen
The pure states that can be uniquely determined among all (UDA) states by their marginals are essential to efficient quantum state tomography. We generalize the UDA states from the…
Quantum hypothesis testing between qubit states with parity
Yi Shen, Carlo Maria Scandolo, Lin Chen
Quantum hypothesis testing (QHT) provides an effective method to discriminate between two quantum states using a two-outcome positive operator-valued measure (POVM). Two types of d…
Classification of Schmidt-rank-two multipartite unitary gates by singular number
Yi Shen, Lin Chen, Li Yu
The multipartite unitary gates are called genuine if they are not product unitary operators across any bipartition. We mainly investigate the classification of genuine multipartite…
Inertia of two-qutrit entanglement witnesses
Changchun Feng, Lin Chen, Chang Xu +1
Entanglement witnesses (EWs) are a fundamental tool for the detection of entanglement. We investigate the inertias of bipartite EWs constructed by the partial transpose of NPT stat…
Necessary conditions on effective quantum entanglement catalysts
Yu-Min Guo, Yi Shen, Li-Jun Zhao +4
Quantum catalytic transformations play important roles in the transformation of quantum entangled states under local operations and classical communications (LOCC). The key problem…
Inertias of entanglement witnesses
Yi Shen, Lin Chen, Li-Jun Zhao
Entanglement witnesses (EWs) are a fundamental tool for the detection of entanglement. We study the inertias of EWs, i.e., the triplet of the numbers of negative, zero, and positiv…
Constructions of -uniform states from mixed orthogonal arrays
Fei Shi, Yi Shen, Lin Chen +1
We study -uniform states in heterogeneous systems whose local dimensions are mixed. Based on the connections between mixed orthogonal arrays with certain minimum Hamming distanc…
Absolutely maximally entangled states in tripartite heterogeneous systems
Yi Shen, Lin Chen
Absolutely maximally entangled (AME) states are typically defined in homogeneous systems. However, the quantum system is more likely to be heterogeneous in a practical setup. In th…
Trade-off relation among genuine three-qubit nonlocalities in four-qubit systems
Li-Jun Zhao, Lin Chen, Yu-Min Guo +3
We study the trade-off relations satisfied by the genuine tripartite nonlocality in multipartite quantum systems. From the reduced three-qubit density matrices of the four-qubit ge…
A matrix inequality related to the entanglement distillation problem
Lilong Qian, Lin Chen, Delin Chu +1
The pure entangled state is of vital importance in the field of quantum information. The process of asymptotically extracting pure entangled states from many copies of mixed states…
Construction of genuine multipartite entangled states
Yi Shen, Lin Chen
Genuine multipartite entanglement is of great importance in quantum information, especially from the experimental point of view. Nevertheless, it is difficult to construct genuine…
Faster quantum computation with permutations and resonant couplings
Yingkai Ouyang, Yi Shen, Lin Chen
Recently, there has been increasing interest in designing schemes for quantum computations that are robust against errors. Although considerable research has been devoted to develo…
Separability of Completely Symmetric States in Multipartite System
Lin Chen, Delin Chu, Lilong Qian +1
Symmetry plays an important role in the field of quantum mechanics. In this paper, we consider a subclass of symmetric quantum states in the multipartite system , na…
Constructing and unextendible product bases and positive-partial-transpose entangled states
Lin Chen, Kai Wang, Yi Shen +2
The 4-qubit unextendible product basis (UPB) has been recently studied by [Johnston, J. Phys. A: Math. Theor. 47 (2014) 424034]. From this result we show that there is only one UPB…
Entangling power of two-qubit unitary operations
Yi Shen, Lin Chen
The entangling power of a bipartite unitary operation shows the maximum created entanglement with the product input states. For an arbitrary two-qubit unitary operation, it is suff…
On a matrix inequality related to the distillability problem
Yi Shen, Lin Chen
We investigate the distillability problem in quantum information in $\bbC^d\ox\bbC^d$. A special case of the problem has been reduced to proving a matrix inequality when . We…