简介:WeinvestigatethesensitivityoftheangularrotationmeasurementwiththemethodofhomodynedetectioninSU(2)andSU(1,1)interferometersbyemployingorbitalangularmomentum(OAM).BycombiningacoherentbeamwithavacuumbeaminanSU(2)interferometer,wegetthesensitivityoftheangularrotationmeasurementas1/(2N1/2l).WecansurpassthelimitoftheangularrotationmeasurementinanSU(1,1)interferometerbycombiningacoherentbeamwithavacuumbeamorasqueezedvacuumbeamwhentheprobebeamhasOAM.Withoutinjection,thesensitivitycanreach1/(2N1/2l).Inaddition,byemployinganotherconstructionofanSU(1,1)interferometerwherethepumpbeamhasOAM,withthesameinjectionofanSU(1,1)interferometer,thesensitivityoftheangularrotationmeasurementcanbeimprovedbyafactorof2,reaching1/(4Nl).Theresultsconfirmthepotentialofthistechnologyforprecisionmeasurementsinangularrotationmeasurements.
简介:以一个新方法在四维的欧几里德几何学的苏(2)杨工厂理论由分解苏(2)计量潜力,我们发现与一件马甲的isospin缺点有关的数字上的片刻命令参数能被Hopf索引和Brouwer度拓扑地使量子化。数字上的片刻只是在杨工厂理论的重要部门的isospin缺点的拓扑的费用的和,这也被显示出。
简介:Thechangingofthescatteringdataforthesolutionsofsu(2)solitonsystemswhicharerelatedbyaclassicalDarbouxtransformation(CDT)isobtained.ItisshownthathowaCDTcreatesanderasesasoliton.