量了计算与量子计算机

最子计算的强大运算使得量子计算机具有广泛的应用前景，该文简要介绍了量子计算的发展现状和基本原理，玩举了典型的量子算法，阐明了量子计算机的优越性，最后预测了量子计算及量子计算机的应用方向。     

量子计算机进入实验阶段

首先简要介绍分层计算的制约;其次介绍最近量子信息的开发,在理论和实践两方面的通信和计算,诸如量子逻辑门、量子密码学、量子交缠性、超距传输的实验性实现、量子算法的首次实验性实现、量子因子分解、量子纪错码以及基于硅片的原子自旋量子计算机;最后讨论克服非相干性困难的方法。     

量子计算与量子计算机

量子计算的强大运算能力使得量子计算机具有广阔的应用前景。该文简要介绍了量子计算的发展现状和基本原理,列举了典型的量子算法,阐明了量子计算机的优越性,最后预测了量子计算及量子计算机的应用方向。     

量子计算机的研究与应用

介绍了量子计算的最新研究方向,简述了量子计算和量子信息技术在保密通信、量子算法、数据库搜索等重要领域的应用。分析了量子计算机与经典计算机相比所具有的优点和目前制约量子计算机应用发展的主要因素,最后展望了其未来发展趋势。     

国外量子计算机进展 对信息安全的挑战与对策

对加拿大D-Wave公司的量子计算机进展和相关情况进行了分析,并针对量子计算机对于信息安全的挑战,讨论了抗量子计算的公钥密码领域的竞争态势和发展思路。     

量子计算与量子计算机展望

量子计算和量子计算机的研究是当代信息科学所面临的一个重大科学课题。阐述了量子计算、量子逻辑门的基本概念和Shor算法,指出了当前实现大规模量子计算所遇到的困难和可能的解决办法。     

量子计算机与经典计算机的比较

本文分析了经典计算机和量子计算机的异同;介绍了量子计算机的原理和特点,指出量子计算和量子信息技术在并行计算、保密通信等方面的重要应用。     

基于经典存储器的量子计算机存储系统

量子计算机具有许多与经典计算机不同的量子特性,其性能远远优于经典计算机,但量子力学特有的性质也使得量子计算机的设计方法不同于经典计算机。在量子计算机中应用经典计算机的存储层次将会遇到一些前所未有的困难,文章提出了一种解决方案,以便能够在量子计算机的存储系统中应用与经典计算机类似的层次结构来提高访存性能。最后,文章给出了这种层次结构下访存性能的分析结果,指出了在何种条件下才能最大程度地发挥层次结构的性能。     

Towards Scalable Linear-Optical Quantum Computers

Scalable quantum computation with linear optics was considered to be impossible due to the lack of efficient two-qubit logic gates, despite the ease of implementation of one-qubit gates. Two-qubit gates necessarily need a non-linear interaction between the two photons, and the efficiency of this non-linear interaction is typically very small in bulk materials. However, it has recently been shown that this barrier can be circumvented with effective non-linearities produced by projective measurements, and with this work linear-optical quantum computing becomes a new avenue towards scalable quantum computation. We review several issues concerning the principles and requirements of this scheme. PACS: 03.67.Lx, 03.67.Pp, 42.50.Dv, 42.65.Lm     

Mathematical Theory of Duality Quantum Computers

We present a mathematical theory for a new type of quantum computer called a duality quantum computer that has recently been proposed. We discuss the nonunitarity of certain circuits of a duality quantum computer and point out a paradoxical situation that occurs when mixed states are considered. It is shown that a duality quantum computer can measure itself without needing a separate measurement apparatus to determine its final state.      

Scaling and Renormalization in Fault-Tolerant Quantum Computers

This work is concerned with phrasing the concepts of fault-tolerant quantum computation within the framework of disordered systems, Bernoulli site percolation in particular. We show how the so-called threshold theorems on the possibility of fault-tolerant quantum computation with constant error rate can be cast as a renormalization (coarse-graining) of the site percolation process describing the occurrence of errors during computation. We also use percolation techniques to derive a trade-off between the complexity overhead of the fault-tolerant circuit and the threshold error rate. PACS: 03.67.Pp; 03.67.Lx     

过时计算机的再利用

计算机的更新换代导致出现大批计算机过时、积压的问题。从系统升级、无盘局域网络、通用变专用、计算机数控技术、职业培训基地、以及计算机捐赠等六个方面,提出了解决方案,指出要经济合理地处理过时计算机以及旧仪器、旧设备。     

量子力学和量子计算机

In this paper,the relationship between computation and physics and the application of the principle of Quantum mechanics to Quantum Computing and Quantum Computers was reviewed     

分布式计算机及其应用发展研究

近年来分布式计算机的应用日益广泛,也成为计算机研究领域的重要课题。该文以分布式计算机为研究对象,对分布式计算机的优势、应用情况及发展趋势进行论述,提出了分布式计算机系统在解决实际问题时需要遵循＂化整为零＂的思想,以便更为便捷地获取数据处理结果。     

Combating Quantum Burst-errors with Quantum Interleaving Technique

Based on the interleaving technique, a kn-qubit code is constructed in this paper with more error-correcting ability than one n-qubit quantum error-correcting code without introducing the redundant qubits. By converting quantum bursts of errors into quantum random errors with the help of the quantum interleaving of the several states of the same quantum code, the proposed technique becomes an effective means to combat quantum bursts of errors. It is much simple and applicable for the quantum interleaving techniques to be used in the optical-fiber communications.     

网格计算机上的映射方法研究

本文提出了将分治计算射到支持虫蛀和存储转发模式的网格连接计算机上的反射射方法。这一方法不仅利用二项树通信步中的规则性,而且利用了二项树拓扑结构的规则性。本文还引入了并行计算时所出现的通信开销评价标准。分析表明,此方法对支持虫柱模式是最优的。