We develop universal quantum computing models that form a family of quantum von Neumann architectures,with modular units of memory,control,CPU,and internet,besides input and output.This family contains three generatio...We develop universal quantum computing models that form a family of quantum von Neumann architectures,with modular units of memory,control,CPU,and internet,besides input and output.This family contains three generations characterized by dynamical quantum resource theory,and it also circumvents no-go theorems on quantum programming and control.Besides universality,such a family satisfies other desirable engineering requirements on system and algorithm design,such as modularity and programmability,hence serves as a unique approach to building universal quantum computers.展开更多
The rapid advancements in hardware, software, and computer networks have facilitated the shift of the computing paradigm from mainframe to cloud computing, in which users can get their desired services anytime, anywhe...The rapid advancements in hardware, software, and computer networks have facilitated the shift of the computing paradigm from mainframe to cloud computing, in which users can get their desired services anytime, anywhere, and by any means. However, cloud computing also presents many challenges, one of which is the difficulty in allowing users to freely obtain desired services, such as heterogeneous OSes and applications, via different light-weight devices. We have proposed a new paradigm by spatio-temporally extending the von Neumann architecture, called transparent computing, to centrally store and manage the commodity programs including OS codes, while streaming them to be run in non-state clients. This leads to a service-centric computing environment, in which users can select the desired services on demand, without concern for these services＇ administration, such as their installation, maintenance, management, and upgrade. In this paper, we introduce a novel concept, namely Meta OS, to support such program streaming through a distributed 4VP~ platform. Based on this platform, a pilot system has been implemented, which supports Windows and Linux environments. We verify the effectiveness of the platform through both real deployments and testbed experiments. The evaluation results suggest that the 4VP~ platform is a feasible and promising solution for the future computing infrastructure for cloud services.展开更多
A modern computer system,based on the von Neumann architecture,is a complicated system with several interactive modular parts.It requires a thorough understanding of the physics of information storage,processing,prote...A modern computer system,based on the von Neumann architecture,is a complicated system with several interactive modular parts.It requires a thorough understanding of the physics of information storage,processing,protection,readout,etc.Quantum computing,as the most generic usage of quantum information,follows a hybrid architecture so far,namely,quantum algorithms are stored and controlled classically,and mainly the executions of them are quantum,leading to the so-called quantum processing units.Such a quantum-classical hybrid is constrained by its classical ingredients,and cannot reveal the computational power of a fully quantum computer system as conceived from the beginning of the field.Recently,the nature of quantum information has been further recognized,such as the no-programming and no-control theorems,and the unifying understandings of quantum algorithms and computing models.As a result,in this work,we propose a model of a universal quantum computer system,the quantum version of the von Neumann architecture.It uses ebits(i.e.Bell states)as elements of the quantum memory unit,and qubits as elements of the quantum control unit and processing unit.As a digital quantum system,its global configurations can be viewed as tensor-network states.Its universality is proved by the capability to execute quantum algorithms based on a program composition scheme via a universal quantum gate teleportation.It is also protected by the uncertainty principle,the fundamental law of quantum information,making it quantum-secure and distinct from the classical case.In particular,we introduce a few variants of quantum circuits,including the tailed,nested,and topological ones,to characterize the roles of quantum memory and control,which could also be of independent interest in other contexts.In all,our primary study demonstrates the manifold power of quantum information and paves the way for the creation of quantum computer systems in the near future.展开更多
基金Project supported by the National Natural Science Foundation of China (Grant Nos.12047503 and 12105343)。
文摘We develop universal quantum computing models that form a family of quantum von Neumann architectures,with modular units of memory,control,CPU,and internet,besides input and output.This family contains three generations characterized by dynamical quantum resource theory,and it also circumvents no-go theorems on quantum programming and control.Besides universality,such a family satisfies other desirable engineering requirements on system and algorithm design,such as modularity and programmability,hence serves as a unique approach to building universal quantum computers.
基金supported in part by the National High-Tech Research and Development(863)Program of China(No.2011AA01A203)the National Key Basic Research and Development Program(973)in China(No.2012BAH13F04)the research fund of Tsinghua-Tencent Joint Laboratory for Internet Innovation Technology
文摘The rapid advancements in hardware, software, and computer networks have facilitated the shift of the computing paradigm from mainframe to cloud computing, in which users can get their desired services anytime, anywhere, and by any means. However, cloud computing also presents many challenges, one of which is the difficulty in allowing users to freely obtain desired services, such as heterogeneous OSes and applications, via different light-weight devices. We have proposed a new paradigm by spatio-temporally extending the von Neumann architecture, called transparent computing, to centrally store and manage the commodity programs including OS codes, while streaming them to be run in non-state clients. This leads to a service-centric computing environment, in which users can select the desired services on demand, without concern for these services＇ administration, such as their installation, maintenance, management, and upgrade. In this paper, we introduce a novel concept, namely Meta OS, to support such program streaming through a distributed 4VP~ platform. Based on this platform, a pilot system has been implemented, which supports Windows and Linux environments. We verify the effectiveness of the platform through both real deployments and testbed experiments. The evaluation results suggest that the 4VP~ platform is a feasible and promising solution for the future computing infrastructure for cloud services.
基金supported by the National Natural Science Foundation of China(Grant No.12047503&No.12105343)
文摘A modern computer system,based on the von Neumann architecture,is a complicated system with several interactive modular parts.It requires a thorough understanding of the physics of information storage,processing,protection,readout,etc.Quantum computing,as the most generic usage of quantum information,follows a hybrid architecture so far,namely,quantum algorithms are stored and controlled classically,and mainly the executions of them are quantum,leading to the so-called quantum processing units.Such a quantum-classical hybrid is constrained by its classical ingredients,and cannot reveal the computational power of a fully quantum computer system as conceived from the beginning of the field.Recently,the nature of quantum information has been further recognized,such as the no-programming and no-control theorems,and the unifying understandings of quantum algorithms and computing models.As a result,in this work,we propose a model of a universal quantum computer system,the quantum version of the von Neumann architecture.It uses ebits(i.e.Bell states)as elements of the quantum memory unit,and qubits as elements of the quantum control unit and processing unit.As a digital quantum system,its global configurations can be viewed as tensor-network states.Its universality is proved by the capability to execute quantum algorithms based on a program composition scheme via a universal quantum gate teleportation.It is also protected by the uncertainty principle,the fundamental law of quantum information,making it quantum-secure and distinct from the classical case.In particular,we introduce a few variants of quantum circuits,including the tailed,nested,and topological ones,to characterize the roles of quantum memory and control,which could also be of independent interest in other contexts.In all,our primary study demonstrates the manifold power of quantum information and paves the way for the creation of quantum computer systems in the near future.
