摘要
Inthispaper,weproposeaprotocoltodeterministicallyteleportanunknownmixedstateofqubitbyutilizingamaximallybipartiteentangledstateofqubitsasquantumchannel.Ifanon-maximallyentangledbipartitepurestateisemployedasquantumchannel,theunknownmixedquantumstateofqubitcanbeteleportedwith1-(1-C~2)~(1/2)probability,whereCistheconcurrenceofthequantumchannel.Theprotocolcanalsobegeneralizedtoteleportamixedstateofquditoramultipartitemixedstate.Moreimportantpurposeisthat,onthebasisoftheprotocol,theteleportationofanarbitrarymultipartite(pureormixed)quantumstatecanbedecomposedintotheteleportationofeachsubsystembyemployingseparateentangledstatesasquantumchannels.Inthecaseofdeterministicteleportation,Bobonlyneedstoperformunitarytransformationsonhissingleparticlesinordertorecovertheinitialteleportedmultipartitequantumstate.
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)