Quantum Computing and Communications [Working Title]最新文献

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Multipoint-Interconnected Quantum Communication Networks 多点互联量子通信网络
Quantum Computing and Communications [Working Title] Pub Date : 2021-12-18 DOI: 10.5772/intechopen.101447
Qingcheng Zhu, Yazi Wang, Lu Lu, Yongli Zhao, Xiaosong Yu, Yuan Cao, Jie Zhang
{"title":"Multipoint-Interconnected Quantum Communication Networks","authors":"Qingcheng Zhu, Yazi Wang, Lu Lu, Yongli Zhao, Xiaosong Yu, Yuan Cao, Jie Zhang","doi":"10.5772/intechopen.101447","DOIUrl":"https://doi.org/10.5772/intechopen.101447","url":null,"abstract":"As quantum computers with sufficient computational power are becoming mature, the security of classical communication and cryptography may compromise, which is based on the mathematical complexity. Quantum communication technology is a promising solution to secure communication based on quantum mechanics. To meet the secure communication requirements of multiple users, multipoint-interconnected quantum communication networks are specified, including quantum key distribution networks and quantum teleportation networks. The enabling technologies for quantum communication are the important bases for multipoint-interconnected quantum communication networks. To achieve the better connection, resource utilization, and resilience of multipoint-interconnected quantum communication networks, the efficient network architecture and optimization methods are summarized, and open issues in quantum communication networks are discussed.","PeriodicalId":145043,"journal":{"name":"Quantum Computing and Communications [Working Title]","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125999284","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Quantum Algorithms for Nonlinear Equations in Fluid Mechanics 流体力学非线性方程的量子算法
Quantum Computing and Communications [Working Title] Pub Date : 2020-12-10 DOI: 10.5772/intechopen.95023
R. Steijl
{"title":"Quantum Algorithms for Nonlinear Equations in Fluid Mechanics","authors":"R. Steijl","doi":"10.5772/intechopen.95023","DOIUrl":"https://doi.org/10.5772/intechopen.95023","url":null,"abstract":"In recent years, significant progress has been made in the development of quantum algorithms for linear ordinary differential equations as well as linear partial differential equations. There has not been similar progress in the development of quantum algorithms for nonlinear differential equations. In the present work, the focus is on nonlinear partial differential equations arising as governing equations in fluid mechanics. First, the key challenges related to nonlinear equations in the context of quantum computing are discussed. Then, as the main contribution of this work, quantum circuits are presented that represent the nonlinear convection terms in the Navier–Stokes equations. The quantum algorithms introduced use encoding in the computational basis, and employ arithmetic based on the Quantum Fourier Transform. Furthermore, a floating-point type data representation is used instead of the fixed-point representation typically employed in quantum algorithms. A complexity analysis shows that even with the limited number of qubits available on current and near-term quantum computers (<100), nonlinear product terms can be computed with good accuracy. The importance of including sub-normal numbers in the floating-point quantum arithmetic is demonstrated for a representative example problem. Further development steps required to embed the introduced algorithms into larger-scale algorithms are discussed.","PeriodicalId":145043,"journal":{"name":"Quantum Computing and Communications [Working Title]","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133949727","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 11
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