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Hardness of classically simulating quantum circuits with unbounded Toffoli and fan-out gates 经典模拟无界Toffoli和扇出门量子电路的硬度
IF 1 4区 物理与天体物理 Q3 COMPUTER SCIENCE, THEORY & METHODS Pub Date : 2013-08-27 DOI: 10.26421/QIC14.13-14-7
Y. Takahashi, Takeshi Yamazaki, Kazuyuki Tanaka
We study the classical simulatability of constant-depth polynomial-size quantum circuits followed by only one single-qubit measurement, where the circuits consist of universal gates on at most two qubits and additional gates on an unbounded number of qubits. First, we consider unbounded Toffoli gates as additional gates and deal with the weak simulation, i.e., sampling the output probability distribution. We show that there exists a constant-depth quantum circuit with only one unbounded Toffoli gate that is not weakly simulatable, unless BQP ⊆ PostBPP ∩ AM. Then, we consider unbounded fan-out gates as additional gates and deal with the strong simulation, i.e., computing the output probability. We show that there exists a constant-depth quantum circuit with only two unbounded fan-out gates that is not strongly simulatable, unless P = PP. These results are in contrast to the fact that any constant-depth quantum circuit without additional gates on an unbounded number of qubits is strongly and weakly simulatable.
我们研究了只有一个单量子位测量的等深度多项式大小量子电路的经典可模拟性,其中电路由最多两个量子位的通用门和无限大数量的量子位的附加门组成。首先,我们考虑无界Toffoli门作为附加门,并处理弱仿真,即对输出概率分布进行采样。我们证明了存在一个只有一个无界Toffoli门且不可弱模拟的等深度量子电路,除非BQP≠PostBPP∩AM。然后,我们考虑无界扇出门作为附加门,并处理强仿真,即计算输出概率。我们证明了存在一个只有两个无界扇出门的恒定深度量子电路,除非P = PP,否则它是不可强模拟的。这些结果与任何在无界量子位上没有附加门的恒定深度量子电路是强和弱可模拟的事实形成对比。
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引用次数: 9
Analysis and Control on Hybrid Semi-tensor Product Internet-based Teleoperation Systems 基于互联网的混合半张量积遥操作系统分析与控制
IF 1 4区 物理与天体物理 Q3 COMPUTER SCIENCE, THEORY & METHODS Pub Date : 2013-01-01 DOI: 10.3724/SP.J.1219.2013.00281
Yibin Chen, N. Xi, Hongyi Li, Yuechao Wang
In order to analyze the stability of hybrid semi-tensor product model of the Internet-based teleoperation system,it’s first to convert the hybrid semi-tensor product model into an impulse switched system,and then discusses stability.Next a nonlinear model predictive controller is designed based on the hybrid semi-tensor product reference model.In the time delay estimation and compensation for the model predictive controller,the Internet time delay is divided into several parts and then puts forward a Gaussian mixture first,the entropy maximization following unsupervised learning time delay estimation method,by which the time delay is compensated and the remote robot is controlled.At last,an experiment is carried out,and the experimental results show that the method advanced in this paper can meet the requirements of the Internet-based teleoperation system.
为了分析基于internet的遥操作系统的混合半张量积模型的稳定性,首先将混合半张量积模型转化为脉冲切换系统,然后对其稳定性进行了讨论。其次,基于混合半张量积参考模型设计了非线性模型预测控制器。在模型预测控制器的时延估计与补偿中,首先将网络时延分成若干部分,然后提出高斯混合、熵最大化跟随无监督学习的时延估计方法,通过该方法对网络时延进行补偿,对远程机器人进行控制。最后进行了实验,实验结果表明,本文提出的方法能够满足基于internet的远程操作系统的要求。
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引用次数: 0
Consensus Problem of Second-Order Multi-Agent Systems with Communication Delay and Input Delay 具有通信延迟和输入延迟的二阶多智能体系统的一致性问题
IF 1 4区 物理与天体物理 Q3 COMPUTER SCIENCE, THEORY & METHODS Pub Date : 2013-01-01 DOI: 10.1007/978-3-642-38524-7_25
P. Dai, Chenglin Liu, Fei Liu
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引用次数: 2
Dirac four-potential tunings-based quantum transistor utilizing the Lorentz force 利用洛伦兹力的狄拉克四势调谐量子晶体管
IF 1 4区 物理与天体物理 Q3 COMPUTER SCIENCE, THEORY & METHODS Pub Date : 2012-11-01 DOI: 10.5555/2481569.2481576
TrisetyarsoAgung
We propose a mathematical model of quantum transistor in which bandgap engineering corresponds to the tuning of Dirac potential in the complex four-vector form. The transistor consists of n-relativ...
我们提出了一个量子晶体管的数学模型,其中带隙工程对应于复四矢量形式的狄拉克势的调谐。晶体管由n相对…
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引用次数: 0
WITHDRAWN: Corrigendum to “The lambda-context calculus (extended version)” [Inform. and Comput. 207 (12) (2009) 1369–1400] 撤回:“lambda-context演算(扩展版)”的勘误表[Inform。计算机学报,2007 (12)(2009)1369-1400]
IF 1 4区 物理与天体物理 Q3 COMPUTER SCIENCE, THEORY & METHODS Pub Date : 2012-01-16 DOI: 10.1016/J.IC.2012.01.001
M. Gabbay, Stéphane Lengrand
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引用次数: 2
Relativity of mixed entangled states 混合纠缠态的相对性
IF 1 4区 物理与天体物理 Q3 COMPUTER SCIENCE, THEORY & METHODS Pub Date : 2011-11-01 DOI: 10.5555/2230956.2230962
MoradiShahpoor
We obtain the necessary and sufficient separability and distillability conditions of mixtures of a maximally entangled state and the completely separable state in relativistic setting. In an inerti...
得到了相对论条件下最大纠缠态和完全可分态混合物的可分离性和可蒸馏性的充分必要条件。在惯性中…
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引用次数: 0
Finite-key analysis for quantum key distribution with decoy states 具有诱饵态的量子密钥分配的有限密钥分析
IF 1 4区 物理与天体物理 Q3 COMPUTER SCIENCE, THEORY & METHODS Pub Date : 2011-05-01 DOI: 10.5555/2011406.2011408
SongTing-Ting, ZhangJie, QinSu-Juan, WenQiao-yan
We analyze the security of finite-resource quantum key distribution with decoy states, and present the security bound for the practical implementations by introducing the deviations of the probabil...
本文分析了具有诱饵状态的有限资源量子密钥分发的安全性,并通过引入概率值的偏差,给出了实际实现的安全界。
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引用次数: 3
Information reconciliation for quantum key distribution 量子密钥分发的信息协调
IF 1 4区 物理与天体物理 Q3 COMPUTER SCIENCE, THEORY & METHODS Pub Date : 2011-03-01 DOI: 10.5555/2011395.2011398
ElkoussDavid, Martinez-mateoJesus, MartinVicente
Quantum key distribution (QKD) relies on quantum and classical procedures in orderto achieve the growing of a secret random string --the key-- known only to the twoparties executing the protocol. L...
量子密钥分发(QKD)依靠量子和经典过程来实现只有执行协议的双方才知道的秘密随机字符串(密钥)的增长。l
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引用次数: 0
An efficient conversion of quantum circuits to a linear nearest neighbor architecture 量子电路到线性最近邻结构的有效转换
IF 1 4区 物理与天体物理 Q3 COMPUTER SCIENCE, THEORY & METHODS Pub Date : 2011-01-01 DOI: 10.5555/2011383.2011393
HirataYuichi, NakanishiMasaki, YamashitaShigeru, NakashimaYasuhiko
Several promising implementations of quantum computation rely on a Linear NearestNeighbor (LNN) architecture, which arranges quantum bits on a line, and allows neighborinteractions only. Therefore,...
几个有前途的量子计算实现依赖于线性最近邻(LNN)架构,它将量子比特排列在一条线上,并且只允许邻居交互。因此,…
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引用次数: 10
Inconsistent Knowledge as a Natural Phenomenon: The Ranking of Reasonable Inferences as a Computational Approach to Naturally Inconsistent (Legal) Theories 作为自然现象的不一致知识:作为自然不一致(法律)理论的计算方法的合理推理排序
IF 1 4区 物理与天体物理 Q3 COMPUTER SCIENCE, THEORY & METHODS Pub Date : 2011-01-01 DOI: 10.1142/9789814295482_0016
C. D. V. Mestdagh, J. Hoepman
The perspective-bound character of information and information processing gives rise to natural inconsistency. Natural inconsistency poses a problem if a common perspective is needed, for example when a shared (consistent) decision has to be made (by humans, within logics or by computers). There are three main approaches to solving the problem of common perspective: universalism; utilitarianism; and contractarianism. However, none of these approaches has ever been made computationally tractable. Inconsistency as a ...
信息和信息处理的视角约束特性导致了自然的不一致性。如果需要公共透视图,例如必须(由人、逻辑或计算机)做出共享的(一致的)决策时,自然的不一致性就会产生问题。解决共同视角问题的主要途径有三种:普遍主义;功利主义;和契约。然而,这些方法都没有在计算上易于处理。不一致是…
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引用次数: 4
期刊
Quantum Information & Computation
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