Non-local properties of a symmetric two-qubit system

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dc.creatorDevi, A. R. Usha
dc.creatorUma, M. S.
dc.creatorPrabhu, R.
dc.creatorSudha
dc.date2005-09-02
dc.date2005-12-06
dc.date.accessioned2026-07-07T07:56:58Z
dc.date.available2026-07-07T07:56:58Z
dc.descriptionNon-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 signatures of quantum entanglement. This leads us to identify sufficient conditions for non-separability in terms of entanglement invariants. Non-local properties of two-qubit states extracted from (i) Dicke state (ii) state generated by one-axis twisting Hamiltonian, and (iii) one-dimensional Ising chain with nearest neighbour interaction are analyzed in terms of the invariants characterizing them.
dc.description5 pages, no figures
dc.identifierhttps://arxiv.org/abs/quant-ph/0509015
dc.identifierhttp://arxiv.org/abs/quant-ph/0509015
dc.identifierJ. Opt. B: Quantum Semiclass. Opt. 7, S740 (2005)
dc.identifierdoi:10.1088/1464-4266/7/12/042
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/127508
dc.subjectQuantum Physics
dc.titleNon-local properties of a symmetric two-qubit system
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