阶梯型三能级原子与双模腔作用制备四光子GHZ态(英文)
作者:
张登玉
期刊:
衡阳师范学院学报 ,2010年31(03):25-28 ISSN:1673-0313
作者机构:
衡阳师范学院,物理与电子信息科学系,湖南,衡阳,421008;[张登玉] 衡阳师范学院
关键词:
量子纠缠态;GHZ态;腔QED;三能级原子
摘要:
通过阶梯型三能级原子与双模腔大失谐作用,提出制备四光子Greenberger-Horne-Zeilinger(GHZ)态的方案.光子作为量子信息载体,通过对原子的测量得到所需要的量子态.该方案具有实验可行性.
语种:
中文
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高师物理专业电磁综合课程研究
作者:
张登玉;王友文;游开明;高峰
期刊:
衡阳师范学院学报 ,2010年31(06):127-131 ISSN:1673-0313
作者机构:
衡阳师范学院,物理与电子信息科学系,湖南,衡阳,421008;[高峰; 游开明; 张登玉; 王友文] 衡阳师范学院
关键词:
电磁学;电动力学;电磁综合课程;体系结构;教学研究
摘要:
探讨高师物理专业电磁学与电动力学课程整合的必要性和可行性,提出改革现行课程体系和教学内容的一些具体设想,以便促进电磁综合课程教学研究与改革。
语种:
中文
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A Simple Scheme for Realizing a Multiqubit Controlled-Phase Gate Through a Resonant Interaction of Three-Level Atoms with a Single-Mode Cavity
作者:
Zhang Deng-Yu* ;Tang Shi-Qing;Xie Li-Jun;Zhan Xiao-Gui;You Kai-Ming;...
期刊:
理论物理 ,2010年53(3):481-485 ISSN:0253-6102
通讯作者:
Zhang Deng-Yu
作者机构:
[Tang Shi-Qing; Xie Li-Jun; Zhang Deng-Yu; You Kai-Ming; Gao Feng; Zhan Xiao-Gui] Hengyang Normal Univ, Dept Phys & Elect Informat Sci, Hengyang 421008, Peoples R China.;[Tang Shi-Qing; Xie Li-Jun] Xiangtan Univ, Fac Mat & Photoelect Phys, Xiangtan 411005, Peoples R China.
通讯机构:
[Zhang Deng-Yu] H;Hengyang Normal Univ, Dept Phys & Elect Informat Sci, Hengyang 421008, Peoples R China.
关键词:
controlled-phase gate;three-level atom;QED;fidelity
摘要:
A very simple theoretical scheme is proposed to implement two- and three-qubit controlled-phase gates firstly only using a single resonant interaction between ladder-type three-level atoms and the single-mode cavity. In the presented protocol, the quantum information is encoded on the stable ground states of the atoms (as the controlling qubits) and the zero- and one-photon Fock states of cavity-field (as the target qubit). Under the influence of the atomic spontaneous emission, the decay of the cavity-mode, and deviation of the coupling strength, the three-qubit controlled-phase gate may have a comparatively high fidelity. The experimental feasibility of controlled-phase gate and the case that is extended to realize N-qubit controlled-phase gate are also discussed. © 2010 Chinese Physical Society and IOP Publishing Ltd.
语种:
英文
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Hierarchical quantum-information splitting
作者:
Wang, Xin-Wen* ;Xia, Li-Xin;Wang, Zhi-Yong;Zhang, Deng-Yu
期刊:
Optics Communications ,2010年283(6):1196-1199 ISSN:0030-4018
通讯作者:
Wang, Xin-Wen
作者机构:
[Zhang, Deng-Yu; Wang, Xin-Wen] Hengyang Normal Univ, Dept Phys & Elect Informat Sci, Hengyang 421008, Peoples R China.;[Wang, Xin-Wen] Beijing Normal Univ, Dept Phys, Beijing 100875, Peoples R China.;[Wang, Xin-Wen] Beijing Normal Univ, Appl Opt Beijing Area Major Lab, Beijing 100875, Peoples R China.;[Xia, Li-Xin] Henan Univ Sci & Technol, Dept Phys, Luoyang 471003, Peoples R China.;[Wang, Zhi-Yong] Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R China.
通讯机构:
[Wang, Xin-Wen] H;Hengyang Normal Univ, Dept Phys & Elect Informat Sci, Hengyang 421008, Peoples R China.
关键词:
Multipartite entanglement;Quantum-information splitting;Asymmetric distribution
摘要:
We present a scheme for asymmetric quantum information splitting, where a sender distributes asymmetrically a qubit to distant agents in a network. The asymmetric distribution leads to that the agents have different powers to reconstruct the sender's qubit. In other words, the authorities of the agents for getting the quantum secret are hierarchized. The scheme does not need the agents to get together and make nonlocal operations. Our scheme can also be modified to implement controlled teleportation against uncooperation of part of supervisors. Comment: Introduction and Conclusion parts are improved
语种:
英文
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关于氢原子体系Schrodinger方程的讨论
作者:
高峰;周娟娟;张登玉;张军民
期刊:
衡阳师范学院学报 ,2010年31(06):27-30 ISSN:1673-0313
作者机构:
衡阳师范学院,物理与电子信息科学系,湖南,衡阳,421008
关键词:
氢原子体系;定态Schrodinger方程;折合质量
摘要:
通过讨论氢原子体系的特点,将氢原子当作两体问题进行化简,推导出氢原子体系的定态Schrodinger方程。得到:方程中的质量不是电子的质量,也不是原子核的质量,而是系统的折合质量。
语种:
中文
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A Simple Scheme for the Preparation of Four-Photon GHZ States Based on Cavity QED
作者:
Zhang Deng-Yu* ;Tang Shi-Qing;Wang Xin-Wen;Xie Li-Jun;Zhan Xiao-Gui;...
期刊:
中国物理快报:英文版 ,2010年27(7):070301-1-070301-3 ISSN:0256-307X
通讯作者:
Zhang Deng-Yu
作者机构:
[Zhang Deng-Yu] Hengyang Normal Univ, Dept Phys & Elect Informat Sci, Hengyang 421008, Peoples R China.;Hengyang Normal Univ, Res Inst Photoelect, Hengyang 421008, Peoples R China.
通讯机构:
[Zhang Deng-Yu] H;Hengyang Normal Univ, Dept Phys & Elect Informat Sci, Hengyang 421008, Peoples R China.
关键词:
Preparation;Four-Photon GHZ;Cavity QED
摘要:
A simple scheme is presented for generating four-photon Greenberger-Horne-Zeilinger states with a large detuned interaction between a three-level atom and two bimodal cavities. In the proposed protocol, the quantum information is encoded on Fock states of the cavity-fields, and the atomic spontaneous emission can be effectively suppressed due to the fact that the excited state of the atom is adiabatically eliminated under the large detuning condition. The detection of the atom can collapse the cavity to the desired state. The experimental feasibility of our proposal is also discussed. © 2010 Chinese Physical Society.
语种:
英文
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含Dzyaloshinski-Moriya相互作用的三量子位HeisenbergXX链的热纠缠
作者:
谢利军;张登玉;唐世清;詹孝贵;陈银花;...
期刊:
量子光学学报 ,2010年16(2):93-100 ISSN:1007-6654
作者机构:
[谢利军; 张登玉; 唐世清; 詹孝贵; 陈银花; 游开明; 高峰] 衡阳师范学院物理与电子信息科学系;湘潭大学材料与光电物理学院
关键词:
热纠缠;量子隐形传态;保真度;磁场;Dzyaloshinski-Moriya相互作用
摘要:
研究了外加磁场下具有Dzyaloshinski-Moriya (DM)各向异性反对称相互作用的三量子位Heisenberg XX链的对热纠缠以及在热平衡下用该链作为信道来传输未知的量子态. 详细地给出了磁场、DM相互作用及温度对热纠缠和平均传输保真度的影响. 结果表明:磁场和DM相互作用可以有效地调控对热纠缠;在温度较低情况下,关闭磁场和DM相互作用,顺铁磁链可以很好地用来做隐形传态的信道;纠缠不能完全反映平均传输保真度,相同的纠缠可以导致不同的平均传输保真度
语种:
中文
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Hierarchical Quantum Information Splitting with Six-Photon Cluster States
作者:
Wang, Xin-Wen* ;Zhang, Deng-Yu;Tang, Shi-Qing;Zhan, Xiao-Gui;You, Kai-Ming
期刊:
INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS ,2010年49(11):2691-2697 ISSN:0020-7748
通讯作者:
Wang, Xin-Wen
作者机构:
[Zhang, Deng-Yu; You, Kai-Ming; Wang, Xin-Wen; Tang, Shi-Qing; Zhan, Xiao-Gui] Hengyang Normal Univ, Dept Phys & Elect Informat Sci, Hengyang 421008, Peoples R China.
通讯机构:
[Wang, Xin-Wen] H;Hengyang Normal Univ, Dept Phys & Elect Informat Sci, Hengyang 421008, Peoples R China.
关键词:
Quantum secret;Hierarchical splitting;Photonic qubit;Cluster states
摘要:
We propose a scheme for hierarchical quantum information splitting with the recently realized six-photon cluster state (Lu et al. in Nat. Phys. 3:91, 2007), where a Boss distributes a quantum secret (quantum state) to five distant agents who are divided into two grades. Two agents are in the upper grade and three agents are in the lower grade. An agent of the upper grade only needs the collaboration of two of the other four agents for getting the secret, while an agent of the lower grade needs the collaboration of all the other four agents. In other words, the agents of two grades have different authorities to recover Boss’s secret. KeywordsQuantum secret-Hierarchical splitting-Photonic qubit-Cluster states
语种:
英文
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低频电磁辐射与脑神经细胞微管的相互作用
作者:
高峰;肖德涛;张登玉;周熠
期刊:
原子核物理评论 ,2009年26(4):343-347 ISSN:1007-4627
作者机构:
[高峰; 周熠] 南华大学核科学技术学院,湖南衡阳,421001;[高峰; 周熠] 衡阳师范学院物理与电子信息科学系,湖南衡阳,421008;[肖德涛] 南华大学;[张登玉] 衡阳师范学院
会议名称:
第十届全国固体核径迹学术会议
会议时间:
2009-08-01
会议地点:
中国陕西西安
关键词:
电磁辐射;神经细胞;非热效应;信息位
摘要:
研究了低频电磁辐射场与脑神经系统的相互作用规律及其机理.电磁辐射为非电离低频电磁场,将脑神经细胞骨架微管(MT)中的两态物理系统进行量子化,用密度矩阵描述脑神经系统中信息位的状态,建立并求解脑神经系统中信息位的动力学方程.结果表明:当非电离低频电磁辐射射向大脑时,脑神经系统中信息位的密度矩阵非对角元在任意时刻都不为零,能够保持较好的量子相干性,脑神经系统的功能不会受到破坏.
语种:
中文
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Controlled Telecloning and Teleflipping for One-Qubit Pure States
作者:
Zhan Xiao-Gui* ;Zhang Deng-Yu;Gao Feng;Li Yan-Ling;Zeng Hao-Sheng
期刊:
理论物理 ,2009年51(6):1023-1026 ISSN:0253-6102
通讯作者:
Zhan Xiao-Gui
作者机构:
[Zhang Deng-Yu; Gao Feng; Zhan Xiao-Gui] Hengyang Normal Univ, Dept Phys, Hengyang 421008, Peoples R China.;[Zeng Hao-Sheng; Li Yan-Ling] Hunan Normal Univ, Dept Phys, Changsha 410081, Hunan, Peoples R China.
通讯机构:
[Zhan Xiao-Gui] H;Hengyang Normal Univ, Dept Phys, Hengyang 421008, Peoples R China.
关键词:
controlled telecloning;controlled teleflipping;agent
摘要:
We propose a scheme for realizing controlled 1 2 telecloning and 1 1 teleflipping for one-qubit pure states via a quantum network including N agents. The quantum operations used in the information-transmission process are just only one Bell-state measurement, and a series of single-qubit operation. It is shown that the fidelities of the controlled telecloning and teleflipping are independent of the initial states and reach their optimal values of 5/6 and 2/3 respectively on the condition that all the agents collaborate. If any one agent does not cooperate, the fidelities become state-dependent and are always smaller than the corresponding optimal values. The average fidelities are equal to the balanced value 1/2, which implies that on average the state incepted by any one of the receivers is a fully mixed state. Thus no information leaks out to any dishonest receivers. The security of telecloning and teleflipping have been increased greatly. © 2009 Chinese Physical Society and IOP Publishing Ltd.
语种:
英文
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二能级原子与双模腔场拉曼相互作用下的量子相干性
作者:
高峰;肖德涛;张登玉;周熠
期刊:
激光杂志 ,2009年30(4):25-27 ISSN:0253-2743
作者机构:
[高峰] 衡阳师范学院物理与电子信息科学系,湖南,衡阳,421008;[高峰] 南华大学核科学技术学院,湖南,衡阳,421001;[肖德涛] 南华大学;[张登玉; 周熠] 衡阳师范学院
关键词:
二能级原子;双模腔场;拉曼相互作用;密度矩阵;退相干
摘要:
针对二能级原子与双模腔场拉曼相互作用模型,求解了二能级原子体系密度矩阵微分方程,进而研究分析了系统的退相干特性.结果表明:二能级原子的量子相干性与其初始状态、双模腔场的频率、腔内的平均光子数等因素有关,当平均光子数远远大于1时,退相干现象特别明显.
语种:
中文
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Tripartite States Bell-Nonlocality Sudden Death under Stochastic Dephasing
作者:
Zhang Deng-Yu* ;Xie Li-Jun;Tang Shi-Qing;Zhan Xiao-Gui;Gao Feng
期刊:
中国物理快报:英文版 ,2009年26(8):080301- ISSN:0256-307X
通讯作者:
Zhang Deng-Yu
作者机构:
[Tang Shi-Qing; Xie Li-Jun; Zhang Deng-Yu; Gao Feng; Zhan Xiao-Gui] Hengyang Normal Univ, Dept Phys & Elect Informat Sci, Hengyang 421008, Peoples R China.;[Tang Shi-Qing; Xie Li-Jun] Xiangtan Univ, Fac Mat & Photoelect Phys, Xiangtan 411005, Peoples R China.
通讯机构:
[Zhang Deng-Yu] H;Hengyang Normal Univ, Dept Phys & Elect Informat Sci, Hengyang 421008, Peoples R China.
关键词:
No English Keyword
摘要:
We demonstrate that the multipartite Bell-inequality violations can be fully destroyed in a unite time in three-qubit systems under decoherence induced by stochastic dephasing. It is significant that the study of tripartite systems can show fundamental characteristics which do not exist in bipartite systems. © 2009 Chinese Physical Society and IOP Publishing Ltd.
语种:
英文
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Realization of Three-Qubit Controlled-Phase Gate Operation with Atoms in Cavity QED System
作者:
Tang Shi-Qing* ;Zhang Deng-Yu;Xie Li-Jun;Zhan Xiao-Gui;Gao Feng
期刊:
中国物理快报:英文版 ,2009年26(2):43-45 ISSN:0256-307X
通讯作者:
Tang Shi-Qing
作者机构:
[Tang Shi-Qing; Xie Li-Jun; Zhang Deng-Yu; Gao Feng; Zhan Xiao-Gui] Hengyang Normal Univ, Dept Phys & Elect Informat Sci, Henyang 421008, Peoples R China.;[Tang Shi-Qing; Xie Li-Jun] Xiangtan Univ, Fac Mat & Photoelect Phys, Xiangtan 411005, Peoples R China.
通讯机构:
[Tang Shi-Qing] H;Hengyang Normal Univ, Dept Phys & Elect Informat Sci, Henyang 421008, Peoples R China.
关键词:
No English Keywords
摘要:
We propose a scheme for realization of three-qubit controlled-phase gate via passing two three-level atoms through a high-Q optical cavity in a cavity QED system. In the presented protocol, the two stable ground states of the atoms act as the two controlling qubits and the zero- and one-photon Fock states of the cavity-field form the target qubit, and no auxiliary state or any measurement is required. The numerical simulation shows that the gate fidelities remain at a high level under the influence of the atomic spontaneous emission, the decay of the cavity mode and deviation of the coupling strength. The experimental feasibility of our proposal is also discussed.
语种:
英文
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在双模腔QED系统中用原子-腔共振相互作用实现三量子比特Toffoli门
作者:
唐世清;张登玉;高峰;谢利军;詹孝贵
期刊:
量子电子学报 ,2009年26(5):548-554 ISSN:1007-5461
作者机构:
[唐世清; 张登玉; 高峰; 谢利军; 詹孝贵] 衡阳师范学院物理与电子信息科学系;湘潭大学材料与光电物理学院
关键词:
量子信息;三量子比特Toffoli门;腔QED;保真度
摘要:
提出了一种在腔QED系统中用一个五能级原子通过原子-腔共振相互作用实现三量子比特Toffoli 门的方案.在该方案中,两个量子化的腔模充当控制比特,而原子的两个低能态构成目标比特.数值结果表明,当同时考虑原子高能态的自发辐射和腔模的衰减对量子门保真度的影响时,腔场的衰减是主要的噪声来源.讨论了原子一光场耦合常数的偏差对三量子比特Toffoli门保真度的影响以及方案在实验上的可行性.
语种:
中文
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热辐射场中两个耦合的二能级原子量子态的纠缠
作者:
张登玉;谢利军;唐世清;詹孝贵;高峰
期刊:
量子光学学报 ,2009年15(3):244-247 ISSN:1007-6654
作者机构:
衡阳师范学院物理与电子信息科学系,湖南,衡阳,421008;湘潭大学材料与光电物理学院,湖南,湘潭,411105;[高峰; 唐世清; 谢利军; 张登玉; 詹孝贵] 衡阳师范学院
关键词:
纠缠;热辐射场;两能级原子;共生纠缠度
摘要:
两个偶极耦合的二能级原子置于热辐射场中,原子用泡利算符描述,环境用无穷的谐振子热库描述,运用密度矩阵方法,得到两能级原子密度矩阵元演化规律。针对三种不同的初始状态,利用共生纠缠度分析置于热辐射场中原子量子态的纠缠。结果表明:当两个原子初始处于不同量子叠加态时,原子的纠缠呈现出明显的差异。
语种:
中文
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四能级原子与双模腔QED作用实现Fredkin门功能(英文)
作者:
张登玉;唐世清;谢利军;詹孝贵;陈银花;...
期刊:
衡阳师范学院学报 ,2009年30(06):25-27 ISSN:1673-0313
作者机构:
衡阳师范学院物理与电子信息科学系,湖南,衡阳,421008
关键词:
量子计算;Fredkin门;腔QED
摘要:
通过四能级原子与双模腔QED系统的谐振作用,提出实现三量子位Fredkin门功能的方案,其中原子量子态作为控制位,两个腔模量子态作为目标位.对方案的实验可行性进行讨论.
语种:
英文
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Remote Information Concentration via a Four-Particle Cluster State
作者:
Chen Yin-Hua* ;Zhang Deng-Yu;Gao Feng;Zhan Xiao-Gui
期刊:
中国物理快报:英文版 ,2009年26(9):21-24 ISSN:0256-307X
通讯作者:
Chen Yin-Hua
作者机构:
[Zhang Deng-Yu; Chen Yin-Hua; Gao Feng; Zhan Xiao-Gui] Hengyang Normal Univ, Dept Phys & Elect Informat Sci, Hengyang 421008, Peoples R China.
通讯机构:
[Chen Yin-Hua] H;Hengyang Normal Univ, Dept Phys & Elect Informat Sci, Hengyang 421008, Peoples R China.
关键词:
No English Keyword
摘要:
We propose a protocol of remote information concentration achieved by a four-particle cluster state. To achieve the task, Bell state measurement and unitary operation are needed. The result shows a peculiar phenomenon that the remote information concentration is not always successful but with certain probability. © 2009 Chinese Physical Society and IOP Publishing Ltd.
语种:
英文
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庄子技道观对教育技术的启迪与反思
作者:
陈列尊;张登玉
期刊:
现代教育技术 ,2009年19(4):18-21 ISSN:1009-8097
作者机构:
衡阳师范学院物理与电子信息科学系,湖南衡阳,421008;[陈列尊; 张登玉] 衡阳师范学院
关键词:
庄子;教育技术;传统文化
摘要:
庄子认为道是技的灵魂和归宿,技是实现道的途径,其最终目标是技道合一。运用它反思教育技术技与道的关系,纠正当前教育技术因技道分离而带来的各种缺失,构建新的技道合一的教育技术技道观,不仅能够使教育之技更好地服务于教育之道,而且能够促进教育技术理论与实践的本土化研究与创新。
语种:
中文
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深入研究基础教育现状在改革中加强物理学专业建设
作者:
高峰;游开明;张登玉
期刊:
衡阳师范学院学报 ,2009年30(03):149-152 ISSN:1673-0313
作者机构:
衡阳师范学院,物理与电子信息科学系,湖南,衡阳,421008;[高峰; 游开明; 张登玉] 衡阳师范学院
关键词:
物理学;教师教育;课程体系改革
摘要:
我国现行的物理教师教育课程存在着基础课程相对薄弱、教育类课程比例偏低、实践课程明显不足、学科课程有待精化等问题.为了调整和优化我国物理教师教育课程,着力汲取并借鉴国内外认知科学、教育科学和教育技术研究的新思想、新方法与新成果,本文根据我国的具体情况,分析了物理教师教育存在的主要问题,提出了物理教师教育课程体系改革的初步设想.
语种:
中文
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Realization of Toffoli gate operation using four-level atoms in cavity QED system
作者:
Tang Shi-Qing* ;Zhang Deng-Yu;Xie Li-Jun;Zhan Xiao-Gui;Gao Feng
期刊:
中国物理B ,2009年18(1):56-61 ISSN:1674-1056
通讯作者:
Tang Shi-Qing
作者机构:
[Tang Shi-Qing; Xie Li-Jun] Xiangtan Univ, Fac Mat & Photoelect Phys, Xiangtan 411005, Peoples R China.;[Tang Shi-Qing; Xie Li-Jun; Zhang Deng-Yu; Gao Feng; Zhan Xiao-Gui] Hengyang Normal Univ, Dept Phys & Elect Informat Sci, Hengyang 421008, Peoples R China.
通讯机构:
[Tang Shi-Qing] X;Xiangtan Univ, Fac Mat & Photoelect Phys, Xiangtan 411005, Peoples R China.
关键词:
Toffoli gate;four-level atom;cavity QED;fidelity
摘要:
This paper proposes a scheme for realization of a three-qubit Toffoli gate operation using three four-level atoms by a selective atom-field interaction in a cavity quantum electrodynamics system. In the proposed protocol, the quantum information is encoded on the stable ground states of atoms, and atomic spontaneous emission is negligible as the large atom-cavity detuning effectively suppresses the spontaneous decay of the atoms. The influence of the dissipation on fidelity and success probability of the three-qubit Toffoli gate is also discussed. The scheme can also be applied to realize an N-qubit Toffoli gate and the interaction time required does not rise with increasing the number of qubits. © 2009 Chin. Phys. Soc. and IOP Publishing Ltd.
语种:
英文
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