LEADER 02983nam 2200469 450 001 9910647769103321 005 20230511113123.0 010 $a9789811982880$b(electronic bk.) 010 $z9789811982873 024 7 $a10.1007/978-981-19-8288-0 035 $a(MiAaPQ)EBC7192181 035 $a(Au-PeEL)EBL7192181 035 $a(CKB)26094855900041 035 $a(DE-He213)978-981-19-8288-0 035 $a(PPN)26820599X 035 $a(EXLCZ)9926094855900041 100 $a20230511d2023 uy 0 101 0 $aeng 135 $aurcnu|||||||| 181 $ctxt$2rdacontent 182 $cc$2rdamedia 183 $acr$2rdacarrier 200 10$aDigital quantum information processing with continuous-variable systems /$fTakaya Matsuura 205 $a1st ed. 2023. 210 1$aSingapore :$cSpringer,$d[2023] 210 4$dİ2023 215 $a1 online resource (172 pages) 225 1 $aSpringer Theses, Recognizing Outstanding Ph.D. Research,$x2190-5061 311 08$aPrint version: Matsuura, Takaya Digital Quantum Information Processing with Continuous-Variable Systems Singapore : Springer,c2023 9789811982873 327 $aIntroduction -- Preliminaries -- Continuous-Variable Quantum System -- Quantum Key Distribution with Continuous-Variable Systems -- Quantum computation with Continuous-Variable Systems. 330 $aThe book provides theoretical methods of connecting discrete-variable quantum information processing to continuous-variable one. It covers the two major fields of quantum information processing, quantum communication and quantum computation, leading to achievement of a long-sought full security of continuous-variable quantum key distribution (QKD) and proposal of a resource-efficient method for optical quantum computing. Firstly, the book provides a security of continuous-variable QKD against arbitrary attacks under a realistic condition such as finite communication rounds and the use of digitized information processing. The book also provides the unified view for conventionally used approximate Gottesman-Kitaev-Preskill (GKP) codes, which encodes qudits on a continuous-variable system, enabling direct comparison between researches based on different approximations. The book finally proposes a resource-efficient method to realize the universal optical quantum computation using the GKP code via the direct preparation of the GKP magic state instead of GKP Pauli states. Feasibility of the proposed protocol is discussed based on the existing experimental proposals for the GKP state preparation. 410 0$aSpringer Theses, Recognizing Outstanding Ph.D. Research,$x2190-5061 606 $aQuantum theory 615 0$aQuantum theory. 676 $a016.61483 700 $aMatsuura$b Takaya$01277941 801 0$bMiAaPQ 801 1$bMiAaPQ 801 2$bMiAaPQ 912 $a9910647769103321 996 $aDigital Quantum Information Processing with Continuous-Variable Systems$93012304 997 $aUNINA