2 papers
quant-ph2025
On Sufficient and Necessary Criteria of Multipartite Quantum Entanglement
Zhi-Bo Chen, Shao-Ming Fei
Based on the generalized Bloch representation, we study the separability and entanglement of arbitrary dimensional multipartite quantum states. Some sufficient and some necessary c…
quant-ph2025
A note on lower bounds of concurrence for arbitrary dimensional bipartite quantum states
Zhi-Bo Chen, Shao-Ming Fei
Quantification of quantum entanglement plays a crucial role in the study of quantum information tasks. We present analytical lower bounds for both concurrence and 2-concurrence bas…