Can measuring entanglement be easy?

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dc.creatorvan Enk, S. J.
dc.date2006-06-01
dc.date.accessioned2026-07-07T07:18:57Z
dc.date.available2026-07-07T07:18:57Z
dc.descriptionI raise some doubts concerning a protocol recently applied in an experiment (Walborn et al, Nature) to measure entanglement. The protocol is much simpler than other known entanglement-verification methods, but, I argue, needs assumptions (namely that the state generated is known and pure) that are too strong to be allowed and that are not justified in most experiments. An extension of the protocol suggested in quant-ph/0605250 is much harder to implement and still relies on assumptions not justified in entanglement-verification protocols, as demonstrated by an explicit example.
dc.descriptionNo
dc.identifierhttps://arxiv.org/abs/quant-ph/0606017
dc.identifierhttp://arxiv.org/abs/quant-ph/0606017
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/114489
dc.subjectQuantum Physics
dc.titleCan measuring entanglement be easy?
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