Experimental demonstration of entanglement assisted coding using a two-mode squeezed vacuum state

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dc.creatorMizuno, Jun
dc.creatorWakui, Kentaro
dc.creatorFurusawa, Akira
dc.creatorSasaki, Masahide
dc.date2004-02-05
dc.date2004-10-29
dc.date.accessioned2026-07-07T06:08:56Z
dc.date.available2026-07-07T06:08:56Z
dc.descriptionWe have experimentally realized the scheme initially proposed as quantum dense coding with continuous variables [Ban, J. Opt. B \textbf{1}, L9 (1999), and Braunstein and Kimble, \pra\textbf{61}, 042302 (2000)]. In our experiment, a pair of EPR (Einstein-Podolski-Rosen) beams is generated from two independent squeezed vacua. After adding two-quadrature signal to one of the EPR beams, two squeezed beams that contain the signal were recovered. Although our squeezing level is not sufficient to demonstrate the channel capacity gain over the Holevo limit of a single-mode channel without entanglement, our channel is superior to conventional channels such as coherent and squeezing channels. In addition, optical addition and subtraction processes demonstrated are elementary operations of universal quantum information processing on continuous variables.
dc.description4 pages, 4 figures, submitted to Phys. Rev. A
dc.identifierhttps://arxiv.org/abs/quant-ph/0402040
dc.identifierhttp://arxiv.org/abs/quant-ph/0402040
dc.identifierPHYSICAL REVIEW A 71, 012304 (2005)
dc.identifierdoi:10.1103/PhysRevA.71.012304
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/91805
dc.subjectQuantum Physics
dc.titleExperimental demonstration of entanglement assisted coding using a two-mode squeezed vacuum state
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