简介：Wetrytoapplyaconstituentquarkmodel(avarietychiralconstituentquarkmodel)andtheresonatinggroupapproachforthemulti-quarkproblemstocomputetheeffectivepotentialbetweentheNN-inS-wave(thequarksinthenucleonsNandN-,andthetwonucleonsrelativelyaswell,areinSwave)soastoseethepossibilityiftheremaybeatightboundstateofsixquarksasindicatedbyastrongenhancementatthresholdofpp-inJ/ψandBdecays.TheeffectivepotentialwhichweobtainintermsofthemodelandapproachshowsiftheexperimentalenhancementisreallycausedbyatightS-waveboundstateofsixquarks,thenthequantumnumberoftheboundstateisverylikelytobeI=1,JPC=0-+.

简介：ThispaperconstructstheinteractionpotentialoftheSH(X2Π)radicalbyusingthecoupled-clustersinglesdoubles-approximate-triplestheorycombiningthecorrelation-consistentquintuplebasissetaugmentedwiththediffusefunctions,aug-cc-pV5Z,inthevalencerange.Employingthepotential,itaccuratelydeterminesthespectroscopicparameters.ThepresentDe,Re,ωe,ωeχe,αeandBevaluesareof3.7767eV,0.13424nm,2699.846cm?1,47.7055cm-1,0.2639cm-1and9.4414cm-1,respectively,whichareinexcellentagreementwiththoseobtainedfromthemeasurements.Atotalof19vibrationalstateshasbeenfoundwhenJ=0bysolvingtheradialSchrdingerequationofnuclearmotion.Thecompletevibrationallevels,classicalturningpoints,initialrotationandcentrifugaldistortionconstantswhenJ=0arereportedforthefirsttime,whichareingoodaccordwiththeexperimentalresults.Thetotalandvariouspartial-wavecrosssectionsarecomputedfortheelasticcollisionsofsulfurandhydrogenintheirgroundstatesatlowtemperatureswhentwoatomsapproacheachotheralongtheSH(X2Π)potentialenergycurve.Overtheimpactenergyrangefrom1.0×10-11to1.0×10-4a.u.,eightshaperesonanceshavebeenfoundinthetotalelasticcrosssections.Foreachshaperesonance,theresonantenergyisaccuratelycalculated.Carefulinvestigationshavepointedoutthattheseresonancesresultfromthel=0,1,2,3,4,6,7,8partial-wavecontributions.

简介：Thispaperproposesanexperimentallyfeasibleschemeforimplementingquantumdensecodingoftrapped-ionsystemindecoherence-freestates.Asthephasechangesduetotimeevolutionofcomponentswithdifferenteigenenergiesofquantumsuperpositionarecompletelyfrozen,quantumdensecodingbasedonthismodelwouldbeperfect.TheschemeisinsensitivetoheatingofvibrationalmodeandBellstatescanbeexactlydistinguishedviadetectingtheionicstate.

简介：我们建议为多国参加的ionicGreenberger-Horne-Zeilinger(GHZ)的产生的一个计划仅仅由single-qubit说大小。我们的计划不需要不仅连接大小而且避免同步的困难thetwo的到达时间散布了光子，它被以前的计划面对。因此，我们的entanglementgeneration计划能基于原子干扰inexperiment比计划更容易被实现。

简介：Entangledphotonsarethefundamentalresourceinquantuminformationprocessing.Howtoproducethemefficientlyhasalwaysbeenamatterofconcern.HereweproposeanewwaytoproducecorrelatedphotonsefficientlyfrommonolayerWS2basedonboundstatesinthecontinuum(BICs).TheBICsofradiationmodesinthemonolayerWS2arerealizedbydesigningthephotoniccrystalslab-WS2-slabstructure.Thegenerationefficiencyofcorrelatedphotonpairsfromsuchastructurehasbeenstudiedbyusingarigorousquantummodelofspontaneousparametricdown-conversionwiththeplanewaveexpansionmethod.ItisfoundthatthegenerationefficiencyofcorrelatedphotonpairsisgreatlyimprovedifthesignalandidlerfieldsarelocatedattheBICsdeterminedbytheinversescatteringmatrixofthestructure.Thisisincontrasttotheparametricdown-conversionprocessfortheenhancedgenerationofnonlinearwavesifthepumpfieldislocatedattheBICsdeterminedbythescatteringmatrixofthestructure.Thegenerationrateofthecorrelatedphotonpairscanbeimprovedby7ordersofmagnitudeinsomedesignedstructures.Thegeneratedquantumsignalsaresensitivetothewavelengthandexhibitnarrowedrelativelinewidth,whichisverybeneficialforquantuminformationprocessing.

简介：Lifetimemeasurementsoflow-lyingexcitedstatesin87Zrand87Nbhavebeenperformedviaandcoincidences.The124MeV32SbeamwasdeliveredfromtheSector-FocusingCyclotron(SFC)oftheHeavyIonR-esearchFacilityinLanzhou(HIRFL).Theparentnuclei87Nband87Mowereproducedbytherespectivereactions58Ni(32S,3p)and58Ni(32S,2p1n),atabeamenergy100MeVthroughthe8mAldegrader.

简介：我们为创造在在超导的流动qubit附近放的二个分开的氮空缺中心旋转整体之间的宏观的纠缠的协调状态建议一个潜在地实际的计划。通过集体磁性的联合并且在里面流动qubit的situtunability，旋转整体的任意的纠缠的协调状态能从流动qubit和旋转整体的decoherence在影响下面与高成功可能性被完成。试验性的可行性和挑战用当前可得到的技术被认为正当。

简介：我们学习配对的状态在一大部分在旋转起来和旋转下面费米子分别地被充满到s-和px-orbital乐队的地方，二部件的费密气体在一个各向异性的二维的光格子装载了的imbalanced。我们由于s和pxorbitals的乐队结构的相对倒置显示出那，在一样上在二费米子之间配对的系统帮助Brillouin地区站在一起，与有限center-of-mass动量为状态导致大稳定的政体，即，Fulde-Ferrell-Larkin-Ovchinnikov(FFLO)状态。特别地，二费密什么时候出现，在动量空间是靠近的，嵌套的效果与空间调整稳定-FFLO阶段的一种特殊类型沿着容易掘的x方向。我们在二维的飞机以内为各种各样的方面比率在吝啬地的途径以内畴划零温度的阶段图并且计算Berezinskii-Kosterlitz-Thouless(BKT)转变温度T为不同阶段的BKT。

简介：Thispaperobtainsaccuratevibrationalspectroscopicconstantsandfullvibrationalenergyspectrumbythealgebraicmethod(AM)forsomeelectronicstatesofhalogendiatomicmolecules.MotivatedbytherecentsuccessofobtainingthedissociationenergiesofLi2moleculebyusinganewanalyticalformula,itfurtherextendstheformulatostudythedissociationenergiesofhalogendiatomicmolecules.TheresultsshowthattheAMspectrumandthetheoreticaldissociationenergiesagreewellwithRKRdataandexperimentaldatarespectively.

简介：

简介：Weinvestigatetheresonantinteractionofaweakgravitationalwavewithamicrowavebeaminacouplingelectromagneticsystem,whichconsistsofaGaussianbeamwithdoublepolarizedtransverseelectricmodes,astaticmagneticfieldandfractalmembranes.Wefindthatunderthesynchroresonancecondition,ahighfrequencygravitationalwaveinamplitude10^-30andfrequency3GHzmayproducetheperturbativephotonfluxof2.15×10s^-1inasurfaceof10^-2m^2.Theperturbativephotonfluxcanbepumpedoutfromthebackgroundphotonfluxesandonemayobtaintheamplifiedsignalphotonfluxof2.15×10^4s^-1bycascadefractalmembranes.Itisworthstudyingthiseffectforthedetectionofhigh-frequencyrelicgravitationalwavesinquintessentialinflationarymodelsandthehigh-frequencygravitationalwavesexpectedbypossiblelaboratoryschemes.

简介：

简介：Therelativisticproblemofspin-1/2fermionssubjecttovectorhyperbolic(kink-like)potential(~tanhkx)isinvestigatedbyusingtheparametricNikiforov-Uvarovmethod.TheenergyeigenvalueequationandthecorrespondingnormalizedwavefunctionsareobtainedintermsoftheJacobipolynomialsintwocases.

简介：Inthispaper,theconductionband-edgenon-parabolicity(NP)andthecircularcross-sectionradiuseffectsonhydrogenicshallow-donorimpurityground-statebindingenergyinzinc-blende(ZB)InGaN/GaNcylindricalQWWsarereported.Thefinitepotentialbarrierbetween(In,Ga)NwellandGaNenvironmentisconsidered.Twomodelsoftheconductionband-edgenon-parabolicityaretakingintoaccount.Thevariationalapproachisusedwithintheframeworkofsinglebandeffective-massapproximationwithone-parametric1S-hydrogenictrialwave-function.ItisfoundthatNPeffectismorepronouncedinthewireofradiusequaltoeffectiveBohrradiusthaninlargeandnarrowwires.Moreover,thebindingenergypeakshiftstonarrowwireunderNPeffect.Agoodagreementisshowncomparedtothefindingsresults.

简介：Thenotionofmultibandsuperconductivitywithdominanttwo-gapfeatureshasbeenrecentlyappliedtotheunconventionalsuperconductorCeCu2Si2forchallengingthepreviouslyacceptedconceptofnodald-wavepairing.Intheproposedstudy,therealisticmultibandFermisurfacetopologyofCeCu2Si2wasobtainedthroughfirst-principlescalculations,andanalysiswasconductedwithaneffectivetwo-bandhybridizationmodelincludingdetailedbandstructure.WithintheT-matrixapproximation,theobtainedcalculationresultsshowthatdifferentpairingcandidates,includingfullygappeds-wave,loop-nodals-wave,andd-wavepairings,couldyieldqualitativelydistinctfeaturescharacterizedbyimpurity-inducedboundstates.Thesefeaturescanbeverifiedthroughhigh-resolutionscanningtunnelingmicroscopyorspectroscopyandprovidecorroborativejustificationthatwouldbebeneficialfortheongoingresearchregardingthesuperconductinggapsymmetryofCeCu2Si2atambientpressure.

简介：Lifetimemeasurementsoflow-lyingexcitedstatesin^87Zrhavebeenperformedviaβ-γcoincidences.The127MeV^32SbeamwasdeliveredfromtheSector-FocusingCyclotron(SFC)oftheHeavyIonResearchFacilityinLanzhou(HIRFL).Theparentnuclei^87Nbwereproducedbythereaction58Ni(32S,2p1n),atabeamenergy127MeVthrougha8umAldegrader.A200ug/cm^2layerof58Nievaporatedontoa200ug/cm^2thickcarbonfoilwasemployedasthetarget.Afterevaporationresidueswereseparatedfromtheprojectilebeamsbythegas-filledrecoilseparatorSHANS[1],thenucleiofinterest87Zrcanbeobtainedwithahigherpurityandthenwereimplantedintoa300umsilicondetector.

简介：

简介：Therealizationofanefficientopticalsensorbasedonaphotoniccrystalmetasurfacesupportingboundstatesinthecontinuumisreported.Liquidswithdifferentrefractiveindices,rangingfrom1.4000to1.4480,areinfiltratedinamicrofluidicchamberbondedtothesensingdielectricmetasurface.Abulkliquidsensitivityof178nm/RIUisachieved,whileaQ-factorofabout2000givesasensorfigureofmeritupto445inairatbothvisibleandinfraredexcitations.Furthermore,thedetectionofultralow-molecular-weight（186Da）moleculesisdemon-stratedwitharecordresonanceshiftof6nmperlessthanaInmthicksinglemolecularlayer.Thesystemexploitsanormal-to-the-surfaceopticallaunchingscheme,withexcellentinterrogationstabilityanddemonstratesalignment-freeperformances,overcomingthelimitsofstandardphotoniccrystalsandplasmonicresonantconfigurations.

简介：

简介：Inthepresentwork,core-shellNi@SiO2catalystswereinvestigatedinordertoevaluatetherelevanceofcatalyticactivityandsurfacestatesofNicoreaswellasNinanoparticlessizetocatalyticpartialoxidationofmethane(POM).ThecatalystswerecharacterizedbyN2adsorption,H2-TPR,XRD,TEMandXPStechniques.Thecatalyticperformanceofthecore-shellcatalystswasfoundtobedependentonthesurfacestatesofcatalyst,whichinfluencedtheformationofproducts.Itwasconsideredthatcarbondioxideformedontheoxidizednickelsites(NiO)andcarbonmonoxideproducedonthereducedsites(Ni).ThesurfacestatesofactivemetalinthedynamicwereinfluencedbothbythesizeofNicoreandtheporosityofsilicashell.However,thecatalyticactivitywouldbedebasedwhenthesizeofNicorewasunderacertainextent,whichcanbeascribedtothefactthecarbondepositionincreasedwiththeincreasingcontentofNiO.TheeffectsofsurfacestatesofNi@SiO2catalystonthecatalyticperformancewerediscussedandthereactionpathwayoverNicoreencapsulatedinsidesilicashellwasproposed.