Finite size effects in entangled rings of qubits

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dc.creatorMeyer, T.
dc.creatorPoulsen, U. V.
dc.creatorEckert, K.
dc.creatorLewenstein, M.
dc.creatorBruss, D.
dc.date2003-08-14
dc.date.accessioned2026-07-07T06:07:37Z
dc.date.available2026-07-07T06:07:37Z
dc.descriptionWe study translationally invariant rings of qubits with a finite number of sites N, and find the maximal nearest-neighbor entanglement for a fixed z component of the total spin. For small numbers of sites our results are analytical. The use of a linearized version of the concurrence allows us to relate the maximal concurrence to the ground state energy of an XXZ spin model, and to calculate it numerically for N<25. We point out some interesting finite-size effects. Finally, we generalize our results beyond nearest neighbors.
dc.descriptionRevTeX4, 14 pages, 4 figures
dc.identifierhttps://arxiv.org/abs/quant-ph/0308082
dc.identifierhttp://arxiv.org/abs/quant-ph/0308082
dc.identifierInt. J. Quant. Inf. 2, 149 (2004)
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/91352
dc.subjectQuantum Physics
dc.titleFinite size effects in entangled rings of qubits
dc.typetext

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