165 citations
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Showing 2005 · quant-phShow all
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quant-ph2005★ 19 cited
Local Invariants and Pairwise Entanglement in Symmetric Multi-qubit System
A. R. Usha Devi, M. S. Uma, R. Prabhu +1
Pairwise entanglement properties of a symmetric multi-qubit system are analyzed through a complete set of two-qubit local invariants. Collective features of entanglement, such as s…
quant-ph2005★ 12 cited
Non-local properties of a symmetric two-qubit system
A. R. Usha Devi, M. S. Uma, R. Prabhu +1
Non-local properties of symmetric two-qubit states are quantified in terms of a complete set of entanglement invariants. We prove that negative values of some of the invariants are…