基于雙量子點分子實現(xiàn)DEUTSCH-JOZSA算法的研究.pdf

1、華東師范大學碩士學位論文基于雙量子點分子實現(xiàn)DEUTSCHJOZSA算法的研究姓名：杜瓊申請學位級別：碩士專業(yè)：光學指導教師：劉金明20100401Absn丑ctAbstractQuantuminfomationscienceisanewsIlbjectcombiningquantummechallicsaIldclassicalinfo硼ationtheo哆Itmainlyincludes研obraIlches，n鋤ely’quant

2、lJmcomm蚰icationandquantumcomputation【metoquanmmsupe叩ositionp訂ncipleandentaIl酉鋤entpropenies，quantumcomputercansolVecenainproblemsquicl(1ycomparedwithitsclassicalcounte叩art，whichshowsmatquaJltumcomputerhaspowermlabilityfor

3、computingandinfonnationprocessingAtpresent，therealizationofquantumalgorithrnindifferentphysicalsystemsisoneofthehotprobl鋤sofquan缸ninf0咖ationfieldDuetoeasytomanipulateandinte黟ate，thesolidstatesystemofs鋤iconductorquant啪dot

4、attractsmuchattentionofscientistsandhasbecomeoneofthemostpossiblecandidatesforindeedrealizingquantu】[IlcomputationWepresentaschemeforimpl鋤entingtheDeutsch—JozsaalgorithmwithdoublequantumdotmoleculesInmescheme，qubitisenco

5、dedonthesingletstateIs)=0個上)一山個))／壓andthet^pletstateI丁)=0個、1)I山個))／√至。f觚。electronspinstatesindoublecoupledquantumdotsAndCoulombinteractionbetweentwoqubitscanbeeffectiVelyreducedt0theformoftheIsin哥modelinteractionItisShow

6、nfromthedefiniteanalysesofthephysicalparametersthatourschememi曲tbeexp甜mentallyrealizablewiththepresentdouble—dotm01eculetectuliquesEncodingqubitsonthesingletstateandthetripletstatecanprotectqubits舶mlow—eequeIlcynoiseands

7、uppressthedominaIltsourceofdecoherence舶mhypemneinteractionSMoreov％missch鋤ewouldbeanimportantst印towardmorecomplexquan咖computation“adoubledotmoIeculesWebelieVematoursch鋤emaybehelp如lto向rther啪derStandtheapplicationofdoubledo