Universal continuous-variable quantum computation: Requirement of optical nonlinearity for photon counting

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dc.creatorBartlett, Stephen D.
dc.creatorSanders, Barry C.
dc.date2001-10-05
dc.date2002-03-19
dc.date.accessioned2026-07-07T06:02:48Z
dc.date.available2026-07-07T06:02:48Z
dc.descriptionAlthough universal continuous-variable quantum computation cannot be achieved via linear optics (including squeezing), homodyne detection and feed-forward, inclusion of ideal photon counting measurements overcomes this obstacle. These measurements are sometimes described by arrays of beam splitters to distribute the photons across several modes. We show that such a scheme cannot be used to implement ideal photon counting and that such measurements necessarily involve nonlinear evolution. However, this requirement of nonlinearity can be moved "off-line," thereby permitting universal continuous-variable quantum computation with linear optics.
dc.description6 pages, no figures, replaced with published version
dc.identifierhttps://arxiv.org/abs/quant-ph/0110039
dc.identifierhttp://arxiv.org/abs/quant-ph/0110039
dc.identifierPhys. Rev. A 65, 042304 (2002)
dc.identifierdoi:10.1103/PhysRevA.65.042304
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/89751
dc.subjectQuantum Physics
dc.titleUniversal continuous-variable quantum computation: Requirement of optical nonlinearity for photon counting
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