Survival of entanglement in thermal states

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dc.creatorMarkham, Damian
dc.creatorAnders, Janet
dc.creatorVedral, Vlatko
dc.creatorMurao, Mio
dc.creatorMiyake, Akimasa
dc.date2006-06-13
dc.date2008-02-12
dc.date.accessioned2026-07-07T09:20:20Z
dc.date.available2026-07-07T09:20:20Z
dc.descriptionWe present a general sufficiency condition for the presence of multipartite entanglement in thermal states stemming from the ground state entanglement. The condition is written in terms of the ground state entanglement and the partition function and it gives transition temperatures below which entanglement is guaranteed to survive. It is flexible and can be easily adapted to consider entanglement for different splittings, as well as be weakened to allow easier calculations by approximations. Examples where the condition is calculated are given. These examples allow us to characterize a minimum gapping behavior for the survival of entanglement in the thermodynamic limit. Further, the same technique can be used to find noise thresholds in the generation of useful resource states for one-way quantum computing.
dc.description6 pages, 2 figures. Changes made in line with publication recommendations. Motivation and concequences of result clarified, with the addition of one more example, which applies the result to give noise thresholds for measurement based quantum computing. New author added with new results
dc.identifierhttps://arxiv.org/abs/quant-ph/0606103
dc.identifierhttp://arxiv.org/abs/quant-ph/0606103
dc.identifierEuro. Phys. Lett. 81, 40006 (2008)
dc.identifierdoi:10.1209/0295-5075/81/40006
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/154692
dc.subjectQuantum Physics
dc.titleSurvival of entanglement in thermal states
dc.typetext

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