HiromichiOhnoQuantuminformationtheoryisaninformationtheorybasedonquantummechanics.Quantumteleportationandaquantumcomputerarefamousandimportantapplicationsofquantuminformationtheory.Sincequantumstatesaredescribedbyoperatorsandmatriceswithsomeproperties,itisimportanttostudyoperatortheoryandtheoryofoperatoralgebra.Ourgroupstudiesquantuminformationtheorymathematically.RSAisacryptosystembasedonthedifficultyoffindingaprimefactorization.Butifwehaveaquantumcomputer,wecanfinditeasilyandthuswecancrackacode.Quantumteleportationisanewmeansofcommunication.Whenweusequantumteleportation,itisimpossibletoeavesdrop.Quantuminformationtheorywilldevelopourcommunicationtechnology.Associate ProfessorPh.D., Information science, Tohoku University, March 2005.Associate professor at Shinshu University, since 2009.Daily life in our laboratory. Students study and prepare for their seminar.Operator Theory and Quantum Information TheoryA scene of a seminar. Students and teachers discuss mathematical problems.Graduatedstudentsfromourlaboratoryworkinvariousfieldsasengineers,governmentemployees,teachers,etc.Oneofouraimsistoimprovestudents’logicalthinkingskillsandproblem-solvingabilities.In the FutureAfter GraduationEngineering Core AkitoSuzukiMycurrentresearchinterestfocusesonthespectraofelectronsinhydrogenatedgraphenes.Grapheneisananomaterialcomposedofcarbonatomsthatarearrangedinatwodimensionalhoneycomblattice.Whilegrapheneisasemiconductorwithzerobandgap,fullyhydrogenatedgraphene,whichisinparticularcalledgraphane(withana),isaninsulatorwithabandgap.Iaminterestedinthespectraofelectronsinpartiallyhydrogenatedgraphenes.AssociateProfessorResearchInterests:MathematicalPhysics,SpectralAnalysisKeywords:QuantumFieldTheory,DiscreteLaplacianMathematical Physics :Mathematics sheds light on physical phenomenaThestructureofsuchamaterialismathematicallydescribedbyagraphthatiscomposedofthesetofverticesandedges.Atomsinthematerialaredescribedbytheverticesandatomicbondsbytheedges.ThentheLaplaceoperatoronthegraphbecomestheHamiltonianofanelectronmovinginthematerial.ThespectrumofthisHamiltoniancorrespondstotheenergyoftheelectron.Thephysicalpropertieslikeelectricalconductivityareanalyzedviaspectralanalysisbymathematicssuchasfunctionalanalysis,operatortheoryandgraphtheory.Tostudythespectraofelectronsisanimportantprobleminmathematicalphysics.Engineering Core 65
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