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Quantum secret sharing between multiparty and multiparty with four states

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science China(physics,Mechanics & Astronomy) 2007年第5期50卷 572-580页

作者： yan fengli1, GAO Ting2.& LI YouCheng1 1 {2. of {2. and information engineering, hebei normal University, shijiazhuang 050016, China 2.{2. of Mathematics and information science, hebei normal University, shijiazhuang 050016, China 1. college of physics and {2. engineering Hebei Normal University Shijiazhuang 050016 China 2. college of Mathematics and information {2. Hebei Normal University Shijiazhuang 050016 China

A protocol of quantum secret sharing between multiparty and multiparty with four states was presented. It was shown that this protocol can nullify the Trojan horse attack with a multi-photon signal, the fake-signal attack with Einstein-Podolsky- Rosen pairs, the attack with single photons, and the attack with invisible photons. In addition, the upper bounds of the average success probabilities were given for dishonest agent eavesdropping encryption using the fake-signal attack with any two-particle entangled states.

关键词： quantum secret sharing, security, Einstein-Podolsky-Rosen pairs

Quantum secret sharing between m-party and n-party with six states

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science China(physics,Mechanics & Astronomy) 2009年第8期52卷 1191-1202页

作者： GAO Ting1,yan fengli2.3 & LI YouCheng2.3 1 {2. of Mathematics and {2. science,hebei normal University,shijiazhuang 050016,China 2.{2. of physics and {2. engineering,hebei normal University,shijiazhuang 050016,China 3 hebei Advanced Thin Films Laboratory,shijiazhuang 050016,China college of Mathematics and information {2. Hebei Normal University Shijiazhuang 050016 China college of physics and {2. engineering Hebei Normal University Shijiazhuang 050016 China hebei Advanced Thin Films Laboratory Shijiazhuang 050016 China

A quantum secret sharing scheme between an m-party group and an n-party group is proposed using three conjugate bases.A sequence of single photons,each of which is prepared in one of the six states,is used directly to encode classical information in the quantum secret sharing *** this scheme,each of all m members in group 1 chooses randomly his/her own secret key individually and independently,and directly encodes his/her respective secret information on the states of single photons via unitary operations,then the last one sends 1/n of the resulting qubits to each member of group *** measuring their respective qubits,all members in group 2.share the secret information shared by all members in group *** renders impossible a Trojan horse attack with a multi-photon signal,a fake-signal attack with EPR pairs,an attack with single photons,and an attack with invisible *** give the upper bounds on the average success probabilities for dishonest agent eavesdropping encryption using the fake-signal attack with any two-particle entangled states.

关键词： quantum secret sharing security EPR pairs

Optimal controlled teleportation via several kinds of three-qubit states

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science China(physics,Mechanics & Astronomy) 2008年第10期51卷 1529-1556页

作者： GAO Ting1,2. yan fengli2.3 & LI YouCheng3 1 {2. of Mathematics and {2. science, hebei normal University, shijiazhuang 050016, China 2.Max-Planck-Institut für Quantenoptik, Hans-Kopfermann-Str. 1, D-85748 Garching, Germany 3 {2. of physics and {2. engineering, hebei normal University, shijiazhuang 050016, China college of Mathematics and information {2. Hebei Normal University Shijiazhuang 050016 China Max-Planck-Institut für Quantenoptik Hans-Kopfermann-Str. 1 D-85748 Garching Germany college of physics and {2. engineering Hebei Normal University Shijiazhuang 050016 China

The probability of successful controlled teleportation of an unknown qubit using a general three-particle state is investigated. The analytic expressions of maximal probabilities via several kinds of tripartite states... 详细信息

关键词： controlled teleportation three-qubit state maximal probability

Quantum key distribution using four-level particles

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Chinese science Bulletin 2011年第1期56卷 24-28页

作者： yan tao yan fengli college of physics {2. and information engineering Hebei Normal UniversityShijiazhuang 050016China hebei Advanced Thin Films Laboratory Shijiazhuang 050016China

We present a quantum key distribution protocol based on four-level particle ***,a controlled quantum key distribution protocol is proposed using three four-level *** show that the two protocols are secure.

关键词： quantum key distribution four-level particles entanglement

Separability criteria via some classes of measurements

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science China(physics,Mechanics & Astronomy) 2017年第10期60卷 1-6页

作者： Lu Liu Ting Gao fengli yan college of Mathematics and information {2. Hebei Normal University Shijiazhuang 050024 China college of physics {2. and information engineering Hebei Normal University Shijiazhuang 050024 China

Mutually unbiased bases (MUBs) and symmetric informationally complete (SIC) positive operator-valued measurements (POVMs) are two related topics in quantum information theory. They are generalized to mutually unbiased measurements (MUMs) and general symmetric informationally complete (GSIC) measurements, respectively, that are both not necessarily rank 1. We study the quantum separability problem by using these measurements and present separability criteria for bipartite systems with arbitrary dimensions and multipartite systems of multi-level subsystems. These criteria are proved to be more effective than previous criteria especially when the dimensions of the subsystems are different. Furthermore, full quantum state tomography is not needed when these criteria are implemented in experiment.

关键词： entangled states mutually unbiased measurements mutually unbiased bases general symmetric informationally complete POVMs

Adsorption and adhesion of blood proteins and fibroblasts on multi-wall carbon nanotubes

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science China(Life sciences) 2009年第5期52卷 479-482页

作者： LI DeJun1, YUAN Li1, yanG Ying1, DENG XiangYun1, Lü XiaoYing2. HUANG yan2. CAO Zheng2. LIU Hao3 & SUN XueLiang3 1 {2. of physics and Electronic {2. science, Tianjin normal University, Tianjin 300074, China 2.State Key Laboratory of Bioelectronics, Southeast University, Nanjing 2.0096, China 3 Department of Mechanical & Materials engineering, University of Western Ontario, London, ON, Canada college of physics and Electronic {2. science Tianjin Normal University Tianjin 300074 China State Key Laboratory of Bioelectronics Southeast University Nanjing 210096 China Department of Mechanical & Materials engineering University of Western Ontario London ON Canada

This article concerns the investigation of blood protein adsorption on carbon paper and multi-wall carbon nanotubes (MWCNTs). Mouse fibroblast cell adhesion and growth on MWCNTs was also studied. The results showed that fibrinogen adsorption on carbon paper was much lower than that on MWCNTs, which means that platelets readily aggregate on the surface of MWCNTs. Mouse fibroblast cells implanted on MWCNTs tended to grow more prolifically than those implanted on carbon paper. The cell concentration observed on MWCNTs increased from 1.2.105/mL for a single day culture to 2.105/mL for a 7-day culture. No toxicity reaction was observed during the culturing period. These results indicated that MWCNTs possessed excellent tissue compatibility.

关键词： multi-wall carbon nanotubes cell adhesion protein adsorption toxicity tissue compatibility

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强外场中的TiO分子结构及特性

四川大学学报（自然科学版） 2009年第4期46卷 1021-1024页

作者：闫安英宋晓书西南民族大学电气信息工程学院成都610041 贵州师范大学理学院贵阳550001

利用多种方法在不同基组水平下,对 TiO 基态分子的几何构型进行优化.通过对比选用密度泛函(DFT)B3LYP/6-311+G 方法研究在强外电场(—0.02.a.u.～+0.02.a.u.)作用下的 TiO 分子的基态键长、总能量、HOMO 能级、LUMO 能级、能隙及势能曲... 详细信息

利用多种方法在不同基组水平下,对 TiO 基态分子的几何构型进行优化.通过对比选用密度泛函(DFT)B3LYP/6-311+G 方法研究在强外电场(—0.02.a.u.～+0.02.a.u.)作用下的 TiO 分子的基态键长、总能量、HOMO 能级、LUMO 能级、能隙及势能曲线的变化规律.结果表明:在一定外加电场范围内,随电场强度的增大,分子键长变小;总能量升高;HOMO 能级、LUMO 能级均依赖外加电场方向,随电场的增大而降低;能隙不依赖于电场方向,随电场强度的增大而减小;势能曲线在外电场中有"平移"效应,其中反向电场对势能曲线的影响较甚,会导致势能曲线偏离势能零点,进而破坏原有的"势能平台".

关键词： TiO DFT 外电场

A=80区奇奇核signature反转现象研究

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西南师范大学学报（自然科学版） 2000年第6期25卷 648-651页

作者：程南璞郑仁蓉朱顺泉文家焱西南师范大学物理系重庆400715 上海师范大学理工信息学院物理系上海200234 海军广州舰艇学院计算机教研室广州510431

利用粒子转子模型对A =80区多个奇奇核的晕带能谱进行了实际计算 ,结果表明

关键词：粒子-转子模型奇奇核 signAture反转晕带能

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H.2.4整像素快速运动估计算法研究

计算机工程与应用 2009年第35期45卷 196-198页

作者：杨云飞韩彦芳张定会李竹上海理工大学光学与电子信息工程学院上海200093 山西师范大学物理与信息工程学院山西临汾041004

通过对H.2.4参考模型JM11.0中整像素运动估计算法的分析,提出了一种新的快速运动估计搜索算法:基于方向预测的菱形-T形搜索算法(Direction Based Diamond-T Search,DBDTS)。改进算法在保证视频序列各分量信噪比和输出比特率的同时有效... 详细信息

通过对H.2.4参考模型JM11.0中整像素运动估计算法的分析,提出了一种新的快速运动估计搜索算法:基于方向预测的菱形-T形搜索算法(Direction Based Diamond-T Search,DBDTS)。改进算法在保证视频序列各分量信噪比和输出比特率的同时有效地减少了运动估计时间。分别应用FS、EPZS、UMHexagonS和改进算法对典型序列进行测试。测试结果表明,新算法在保证编码性能的同时,有效地提高了运动估计速度。

关键词： H.2.4标准块运动估计搜索模型快速搜索算法基于方向预测的菱形-T形搜索(DBDTS)算法