1 citations · 1 across the 9 of their papers we have counts for
9 papers
Eigenvalues of multipartite entanglement witnesses
Nalan Wang, Lin Chen
We investigate various properties of multipartite block-positive operators, decomposable EWs (DEWs), and non-decomposable EWs. We provide a necessary and sufficient condition to co…
Entanglement Distillation of some Rank-Five Symmetric NPT States in Two-Qutrit Systems
Yuwei Lei, Zihua Song, Lin Chen +1
Entanglement distillation is a fundamental task in quantum information processing. In this work, we investigate the distillability properties of a class of two-qutrit symmetric NPT…
A partial-trace matrix inequality and Werner-state distillability
Zhiwei Song, Lin Chen
Motivated by the equivalent partial-trace formulations of Werner-state distillability [P. Costa Rico, Lett. Math. Phys. 115, 47 (2025); S.-Y. Qi et al., Phys. Rev. A 110, 012406 (2…
Construction of three-qubit positive-partial-transpose entangled states of rank four
Yonggang Cheng, Lin Chen
Multiqubit positive-partial-transpose (PPT) entangled states play an important role in quantum information theory. We characterize such states of minimum rank in three-qubit system…
On the saturated cases of the distillability conjecture
Saiqi Liu, Lin Chen
The distillability conjecture for two-copy four-by-four Werner states has been an open problem in quantum information for years. We investigate the conditions under which the conje…
High-Dimensional Carrier-Assisted Entanglement Purification Based on Mutually Unbiased Bases
Zihua Song, Lin Chen, Yongge Wang
Distilling high-dimensional entanglement under general asymmetric Pauli noise remains challenging. For the unprocessed qutrit single-carrier recurrence studied here, severe noise a…
A counterexample to the strong spin alignment conjecture
Zhiwei Song, Lin Chen
The spin alignment conjecture was originally formulated in connection with the additivity of coherent information for a class of quantum channels known as platypus channels. Recent…
Extreme points of absolutely PPT states with exactly three distinct eigenvalues
Nalan Wang, Lin Chen, Zhiwei Song
Whether the sets of absolutely separable (AS) and absolutely two-qutrit positive-partial-transpose (AP) states are the same has been an open problem in entanglement theory for deca…
Entanglement distillation in terms of Schmidt rank and matrix rank
Tianyi Ding, Lin Chen
Entanglement distillation is a key task in quantum-information processing. In this paper, we distill non-positive-partial-transpose (NPT) bipartite states of some given Schmidt ran…