Teleportations of Mixed States and Multipartite Quantum States

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摘要 Inthispaper,weproposeaprotocoltodeterministicallyteleportanunknownmixedstateofqubitbyutilizingamaximallybipartiteentangledstateofqubitsasquantumchannel.Ifanon-maximallyentangledbipartitepurestateisemployedasquantumchannel,theunknownmixedquantumstateofqubitcanbeteleportedwith1-(1-C~2)~(1/2)probability,whereCistheconcurrenceofthequantumchannel.Theprotocolcanalsobegeneralizedtoteleportamixedstateofquditoramultipartitemixedstate.Moreimportantpurposeisthat,onthebasisoftheprotocol,theteleportationofanarbitrarymultipartite(pureormixed)quantumstatecanbedecomposedintotheteleportationofeachsubsystembyemployingseparateentangledstatesasquantumchannels.Inthecaseofdeterministicteleportation,Bobonlyneedstoperformunitarytransformationsonhissingleparticlesinordertorecovertheinitialteleportedmultipartitequantumstate.
机构地区 不详
出版日期 2007年06月16日(中国期刊网平台首次上网日期,不代表论文的发表时间)
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