简介:Inthispaper,weproposeaprotocoltodeterministicallyteleportanunknownmixedstateofqubitbyutilizingamaximallybipartiteentangledstateofqubitsasquantumchannel.Ifanon-maximallyentangledbipartitepurestateisemployedasquantumchannel,theunknownmixedquantumstateofqubitcanbeteleportedwith1-(1-C~2)~(1/2)probability,whereCistheconcurrenceofthequantumchannel.Theprotocolcanalsobegeneralizedtoteleportamixedstateofquditoramultipartitemixedstate.Moreimportantpurposeisthat,onthebasisoftheprotocol,theteleportationofanarbitrarymultipartite(pureormixed)quantumstatecanbedecomposedintotheteleportationofeachsubsystembyemployingseparateentangledstatesasquantumchannels.Inthecaseofdeterministicteleportation,Bobonlyneedstoperformunitarytransformationsonhissingleparticlesinordertorecovertheinitialteleportedmultipartitequantumstate.
简介:Weshowhowquantumentangledbiphotonstatescanbeusedtorealizeghostscattering,anonlocalschemetoobtainscatteringinformationofanunknownobjectthroughthecorrelationmeasurementofthescatteringphotonsintwodifferentopticalpaths.WepresentaframeworktodescribethebiphotonghostscatteringprocessfromtheT-matrixformulaofthescatteringtheory.Wefindthescatteringinformationofatestobjectcanberetrievedfromeitherthetestarmorthereferencearm.Byadjustingthebiphotonstates,theghostscatteringpatternsmaybevariedfromthescatteringpatternoftheobjectinthetestarmtotheobjectinthereferencearm.
简介:TheCMSgroupsintheUSAareactivelyinvolvedinseveralgrid-elatedprojects,includingtheDoE-fundedParticlePhysicsDataGrid(PPDG)andtheNSFfundedGridPhysicsNetwork(GriPhyN).Wepresentdevelopmentsof:theGriddataManagementPilot(GDMP)software;aJavaAnalysisStudio-basedprototyperemoteanalysisserviceforCMSdata;toolsforautomatingjobsubmissionschemesforlargescaledistributedsimulationandreconstructionrunsforCMS;modelinganddevelopmentofjobschedulingschemesusingtheMONARCtoolkit;arobustexecutionservicefordistributedprocessors.ThedeploymentanduseofthesetoolsatprototypeTier1andTier2computingcentersintheUSAisdescribed.
简介:<正>SupposeXisasuperdiffusioninRdwithgeneralbranchingmechanism¢.andYDdenotesthetotalweightedoccupationtimeofXinaboundedsmoothdomainD.WediscusstheconditionsonψtoguaranteethatYDhasabsoluteycontinuousstates.Andforparticularψ(z)=z(l+,0DisabsolutelycontinuouswithrespecttotheLebesguemeasureinD.whereasinthecased>2+2/B.itissingular.AsweknowtheabsolutecontinuityandsingularityofY(Dhavenotbeendiscussedbefore.
简介:Inthispaper,westudyquantumteleportationofatomicstatesviaahybridentangledstate(HES)involvinganatomandacavityfield.Andweinvestigatehowtoimplementcontrolledphase(CP)gatesbetweenatomicinternalstatesandcoherentstatesofcavityfield.Wealsodiscussthemethodsofdistinguishingcoherentstates|±α>inacavity.Finally,abriefdiscussionaboutthefeasibilityofthisschemeinexperimentispresented.
简介:TransmissionofananisotropicmetasurfaceisanalyzedinapolarbaserelyingontheJonescalculus,andpolarizationconversionfromthespatialuniformpolarizationtothespatialnonuniformpolarizationisexplored.Simpleandcompactpolarizationconvertersbasedonrectangularholesorcrossholesetchedinsilverfilmaredesigned,andpolarizationconversionsfromthelinearandcircularpolarizationtotheradialandazimuthalpolarizationarerealized.Numericalsimulationsofthreedesignedpolarizationconvertersconsistingofrectangularholesequivalenttopolarizersandquarter-andhalf-waveplates,exhibittheperfectpolarizationconversion.Theexperimentresultsconsistentwiththesimulationsverifytheoreticpredictions.Thisstudyishelpfulfordesigningmetasurfacepolarizationconvertersandexpandingtheapplicationofametasurfaceinpolarizationmanipulations.
简介:Westudyfew-electronsemiconductorquantumdotsusingtheunrestrictedHartree-Fock-RoothaanmethodhasedontheGaussianbasis.Ouremphasisisontheenergylevelcalculationforquantumdots.Theconfinementpotentialinaquantumdotisassumedtobeinaformofthree-dimensionalsphericalfinitepotentialwell.Somevaluableresults,suchastherearrangementoftheenergylevel,havebeenobtained.
简介:假设在在分子的水平的生活进程的主要变量是生物大分子和他们的边疆电子的符合构造符合构造电子系统上的量子论的一个形式体系被建议。基于符合构造电子系统的量子论,当在扭转之间的量转变在多肽上声明链,和合拢的率由nonadiabatic是计算的,合拢的蛋白质被考虑操作员方法。率计算在合拢被概括到频率变化的盒子。合拢率公式的蛋白质的一种分析形式被获得,它能为蛋白质合拢的进一步的学习作为一个有用工具被服务。率理论的申请简短被总结解释合拢实验的蛋白质。它包括合拢率的惯性的时刻依赖,对的统一描述二状态并且合拢的multistate蛋白质,合拢并且展开率对变性剂集中的关系,在放出能、吸能的合拢之间的区别,ultrafast并且下坡的合拢从量合拢看了理论,并且,最后,合拢率和它的non-Arrhenius行为的解释的温度依赖。所有这些研究支持合拢的蛋白质是的看法实质上,在conformational之间的量转变说。
简介:Thispaperdiscussestheamplitude-squaredsqueezingforthesuperpositionoftwocoherentstateswiththeirphasedifferencesbeingseparatelyπ/2,3π/2,andπ,aswellasforthesuperpositionstateoftwopseudoclassicalstates.Accordingtotheanalysis,itisfoundthatthesuperpositionstateoftwocoherentstateswiththeirphasedifferencesπ/2and3π/2,andthesuperpositionstateoftwopseudoclassicalstatesbothdoexhibittheamplitude-squaredsqueezing.Also,somespecificstatesarefoundtoexhibitevenstrongersqueezingeffectswhenrelativephaseofthesuperpositionisequaltotheaveragephotonnumber.Amplitude-squaredsqueezingisdependentonthedifferenceinphasebetweentwocoherentstates.