Optimal measurements for relative quantum information

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dc.creatorBartlett, Stephen D.
dc.creatorRudolph, Terry
dc.creatorSpekkens, Robert W.
dc.date2003-10-02
dc.date2004-09-23
dc.date.accessioned2026-07-07T06:07:57Z
dc.date.available2026-07-07T06:07:57Z
dc.descriptionWe provide optimal measurement schemes for estimating relative parameters of the quantum state of a pair of spin systems. We prove that the optimal measurements are joint measurements on the pair of systems, meaning that they cannot be achieved by local operations and classical communication. We also demonstrate that in the limit where one of the spins becomes macroscopic, our results reproduce those that are obtained by treating that spin as a classical reference direction.
dc.description6 pages, 1 figure, published version
dc.identifierhttps://arxiv.org/abs/quant-ph/0310009
dc.identifierhttp://arxiv.org/abs/quant-ph/0310009
dc.identifierPhys. Rev. A 70, 032321 (2004)
dc.identifierdoi:10.1103/PhysRevA.70.032321
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/91477
dc.subjectQuantum Physics
dc.titleOptimal measurements for relative quantum information
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