Pairwise entanglement in symmetric multi-qubit systems

Details Pairwise entanglement in symmetric multi-qubit systems Pairwise entanglement in symmetric multi-qubit systems

2001-06-25

arxiv.org/abs/quant-ph/0106145v1

Eur. Phys. J. D 18, 385-391 (2002).

Physics

Quantum Physics

7 pages, 3 figures

Scientific paper

10.1140/epjd/e20020045

The concurrence, a quantitative measure of the entanglement between a pair of
particles, is determined for the case where the pair is extracted from a
symmetric state of N two-level systems. Examples are given for both pure and
mixed states of the N-particle system, and for a pair extracted from two
ensembles with correlated collective spins.

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