3 papers
quant-ph2025
From vanishing pairwise entanglement to global separability:Entanglement structure and measures in the W subspace
Reza Hamzehofi
The subspace is defined as the subspace of the -qubit Hilbert space spanned by states containing at most one excitation. In this work, a separability criterion is establishe…
quant-ph2025
Entanglement measures for multipartite quantum systems:limitations and new approaches
Reza Hamzehofi
In this research, we investigate the distribution of entanglement within two entangled -qubit systems using the one-tangle and -tangle. Our analysis reveals that for certain…
quant-ph2024
Separability criterion for n-particle states
Reza Hamzehofi
This research introduces the concept of the purity number, which represents the number of separable s-particle sub-states within an n-particle state ( ). It establishes that,…