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对两个使用Bell测量基的量子密钥分配协议的分析与改进
信息处理技术 量子密码学 密钥分配 完全Bell基测量
2009/3/5
对两个使用EPR对和Bell测量基的量子密钥分配协议的安全性进行了分析，从测量不同位置的量子比特的拓扑结构出发，证明了这两个协议的等价性。指出了协议执行双方使用Bell测量基在两个量子比特上的检错策略的合理性，但在有效确定错误数量方面却有一个缺陷，即不能够检测到出现在所有量子上同样类型的错误，从而构成安全性的一个隐患。并利用|0+>,|0->,|1+>,|1->测量基解决了这个缺陷，同时不需要目前...
与两等同Bell态纠缠原子相互作用光场的量子场熵
量子纠缠 单模数态光场 Bell态纠缠原子
2009/2/10
利用全量子理论,并通过数值计算,研究了初始处于Fock态的单模光场与两等同双能级纠缠原子单光子共振相互作用过程中单模光场量子场熵的时间演化特性.结果发现:当两原子初始处于第一种Bell态时,光场量子场熵的时间演化周期为π/g2(2n+1);随着初始光强的增大,光场与原子之间的量子纠缠现象减弱;特别是当时间t为演化周期的整数倍时,场－原子系统处于退纠缠状态.当两原子初始处于第二种Bell态时,光场量...
Non-homogeneous Bell-type Inequalities for Two- and Three-qubit States
Non-homogeneous Bell-type Inequalities Two- and Three-qubit States
2010/4/9
A systematic approach is presented to construct non-homogeneous two- and three-qubit Bell-type inequalities. When projector-like terms are subtracted from homogeneous two-qubit CHSH polynomial, non-ho...
Extended Boole-Bell inequalities applicable to quantum theory
Boole inequalities Bell inequalities quantum theory EPR paradox
2010/4/8
We address the basic meaning of apparent contradictions of quantum theory and probability frameworks as expressed by Bell's inequalities. We show that these contradictions have their origin in the inc...
The relevance of random choice in tests of Bell inequalities with atomic qubits
random choice tests Bell inequalities atomic qubits
2010/4/7
It is pointed out that a loophole exists in experimental tests of Bell inequality using atomic qubits, due to possible errors in the rotation angles of the atomic states. A sufficient condition is der...
UNNATURAL MONOPOLY：CRITICAL MOMENTS IN THE DEVELOPMENT OF THE BELL SYSTEM MONOPOLY
UNNATURAL MONOPOLY CRITICAL MOMENTS BELL SYSTEM MONOPOLY
2008/11/21
Congress finally began the long-needed process of comprehensive
telecommunication deregulation in 1994, exactly 60 years after their
last major legislative effort, the Communications Act of 1934, wa...
Bell’s面瘫急性期电针灸与激素治疗临床对照观察
急性期Bell’s面瘫 电针灸 激素
2008/10/31
目的 观察Bell’s面瘫急性期电针灸治疗的疗效及安全性。方法 将90例Bell’s面瘫急性期患者随机分为两组，治疗组(45例)给予单纯电针灸治疗；对照组(45例)给予激素、抗病毒及营养神经药物，10天后采用电针灸治疗。对急性期病情的发展、开始恢复时间、疗效及疗程进行对照观察。结果 治疗组对于急性期病情发展的控制优于对照组(p<0.05)，对完全性面瘫的疗效及达到痊愈所需时间亦均优于对照组(p<0...
对两个使用Bell测量基的量子密钥分配协议的分析与改进
量子密码学 密钥分配 完全Bell基测量 纠缠转移
2008/5/14
本文对两个使用EPR对和Bell测量基的量子密钥分配协议的安全性进行了分析，从测量不同位置的量子比特的拓扑结构出发，证明了这两个协议的等价性。指出了协议执行双方使用Bell测量基在两个量子比特上的检错策略的合理性，但在有效确定错误数量方面却有一个缺陷，即不能够检测到出现在所有量子上同样类型的错误，从而构成安全性的一个隐患。笔者利用 测量基解决了这个缺陷，同时不需要目前来讲比较难于实现的完全Bell...
Range of Violations of Bell’s Inequality by Entangled Photon PairsEntangled Photon Pairs
quantum entanglement Bell’s inequality nonlocality
2008/4/22
If the quantum states of measured pairs are entangled, then there are triplets of experimental configurations for which Bell’s original inequality is violated. This paper gives a concise characterizat...
Separate- versus common-common-cause-type derivations of the Bell inequalities
Bell inequality common cause
2008/4/22
Standard derivations of the Bell inequalities assume a common common cause system that is a common screener-off for all correlations and some additional assumptions concerning locality and no-conspira...
The Einstein-Podolsky-Rosen Argument and the Bell Inequalities
EPR Bell inequalities Pitowsky Reichenbach
2008/4/21
In 1935 Einstein, Podolsky, and Rosen (EPR) published an important paper in which they claimed that the whole formalism of quantum mechanics together with what they called ``Reality Criterion'' imply ...
The origin of the spacetime metric: Bell's `Lorentzian pedagogy' and its significance in general relativity
special relativity general relativity space-time metric
2008/4/21
The purpose of this paper is to evaluate the `Lorentzian Pedagogy' defended by J.S. Bell in his essay ``How to teach special relativity'', and to explore its consistency with Einstein's thinking from ...
Disproof of Bell's Theorem: Further Consolidations
Bell's Theorem Local Causality Local realism
2008/4/11
The failure of Bell's theorem for Clifford algebra valued local variables is further
consolidated by proving that the conditions of remote parameter independence and remote
outcome independence are ...
Disproof of Bell's Theorem by Clifford Algebra Valued Local Variables
Bell's Theorem Local Causality Local realism
2008/4/11
It is shown that Bell's theorem fails for the Clifford algebra valued local realisticvariables. This is made evident by exactly reproducing quantum mechanical expectationvalue for the EPR-Bohm type sp...
An example of a classical system violating Bell's inequalities is discussed. Existence of a classical system violating Bell's inequalities takes away the "mysterious" property usually called "non-loca...