228 citations · 1.8k across the 85 of their papers we have counts for
6 papers · 1 filter
Existence Criterion of Genuine Tripartite Entanglement
Chang-shui Yu, He-shan Song
In this paper, an intuitive mathematical formulation is provided to generalize the residual entanglement for tripartite systems of qubits [Phys. Rev. A 61, 052306 (2000)] to the tr…
Evolution of entanglement for quantum mixed states
Chang-shui Yu, X X Yi, He-shan Song
A simple relation is introduced for concurrence to describe how much the entanglement of bipartite system is at least left if either (or both) subsystem undergoes an arbitrary phys…
An alternative quantum fidelity for mixed states of qudits
Xiaoguang Wang, Chang-Shui Yu, X. X. Yi
We give an alternative definition of quantum fidelity for two density operators on qudits in terms of the Hilbert-Schmidt inner product between them and their purity. It can be reg…
Entanglement Monogamy of Tripartite Quantum States
Chang-shui Yu, He-shan Song
An interesting monogamy equation with the form of Pythagorean theorem is found for -dimensional pure states, which reveals the relation among bipartite concurr…
Genuine tripartite entanglement monotone of dimensional systems
Chang-shui Yu, L. Zhou, He-shan Song
A genuine tripartite entanglement monotone is presented for -dimensional tripartite pure states by introducing a new entanglement measure for bipartite pure…
Measurable Concurrence of Mixed States
Chang-shui Yu, C. Li, He-shan Song
We show that bipartite concurrence for rank-2 mixed states of qubits is written by an observable which can be exactly and directly measurable in experiment by local projective meas…