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Search Results: 1 - 10 of 317122 matches for " 王继锁 "
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双光子Jaynes-Cummings模型中场的振幅N次方压缩
,传奎
物理学报 , 1995,
Abstract: 分别研究了初始处于基态或激发态的一个二能级原子与相干态光场相互耦合的双光子Jaynes-Cummings模型中场的振幅N次方压缩特性,并讨论了其压缩度随入射光场的初始平均光子数和压缩阶数N的变化.
MATHEMATICAL STRUCTURE OF THE EIGENSTATES OF OPERATOR ak AND THEIR PROPERTIES
光子消灭算符高次幂本征态的数学结构及其性质

WANG JI-SUO,

物理学报 , 1991,
Abstract: 本文在文献1]的基础上研究了光子消灭算符高次幂αk(k≥3)的正交归一本征态的数学和量子统计性质,指出这些本征态均具有非经典效应,它们组成一个以非经典光场态作基矢的完备表象。在此之前,文献1]讨论的k=3的情况只是我们所得普遍性结论的特例。
白三叶转基因及其生态适应性研究进展
赵桂琴?,民?,周?
生态学报 , 2004,
Abstract: 牧草基因工程是近年来国内国际研究的热点之一,白三叶作为温带地区优良的豆科牧草,是人工草地建植的首选草种,也是各类观赏性草坪和绿地的主要组分。但白三叶的生态幅较窄,适宜在温暖(适宜生长温度为19~24℃)湿润、年降雨量700~1000mm的地区生长,对土壤酸碱度的要求比较严,适宜的土壤ph为6~7,耐酸性和耐盐碱能力都比较差,从而限制了其在许多地区的应用。利用转基因手段提高其抗逆性和生态适应性,培育抗性强、适应性广的白三叶新品种,对我国尤其是北方畜牧业、草坪业和生态建设都具有重要意义。在提高其对生物胁迫和非生物胁迫的抗性和生态适应性方面,白三叶的转基因研究已经取得了较大进展。结合国内外白三叶基因工程及生态适应性研究动态,系统介绍了白三叶转基因研究的主要内容和方法,在对已有成果进行综合分析的基础上,就目前白三叶转基因和生态适应性研究中亟待解决的一些问题进行了探讨。
QUANTUM FLUCTUATION OF MESOSCOPIC CIRCUIT IN SQUEEZED VACUUM STATE
压缩真空态下介观电路的量子涨落

WANG JI-SUO,SUN CHANG-YONG,
,孙长勇

物理学报 , 1997,
Abstract: Starting from equation of motion of an active LC circuit,the quantum fluctuations of the charge and current in the mesoscopic circuit (LC circuit) in the squeezed vacuum state are investigated.
Entangled coherent states in symmetry phase spaceand their nonclassical effects
相空间中对称的纠缠相干态及其非经典特性

Zhang Xiao-Yan,Wang Ji-Suo,
张晓燕
,

物理学报 , 2011,
Abstract: We discuss the entangled coherent states in symmetry phase space by introducing orthogonal basis, calculate their entanglement by means of concurrence, and investigate their squeezing effects of single-mode and two-mode and antibunching effects. The calculations indicate that the entangled coherent state in symmetry phase space is closely related to nonclassical effect.
New even and odd nonlinear coherent states and their non-classical properties
新的奇偶非线性相干态及其非经典性质

Meng Xiang-Guo,Wang Ji-Suo,
孟祥国
,

物理学报 , 2007,
Abstract: 构造出了一种新的奇偶非线性相干态, 并借助于数值计算方法研究了它们的压缩、振幅平方压缩、反聚束和相位概率分布等非经典性质. 结果表明, 与通常的奇偶相干态和非线性奇偶相干态不同, 在参数|λ|的不同取值范围内, 新的奇偶非线性相干态在Y1和Y2两个方向均可呈现振幅平方压缩效应, 而压缩效应仅在偶非线性相干态的X2方向上呈现, 反聚束效应仅在奇非线性相干态中呈现. 另外, 通过研究新的奇偶非线性相干态相位概率分布, 发现新的奇偶非线性相干态具有完全不同的量子干涉特性.
Amplitude-squared squeezing of Roy-type even and odd nonlinear coherent states in a finite-dimensional Hilbert space
有限维Hilbert空间Roy型奇偶非线性相干态的振幅平方压缩

Meng Xiang-Guo,Wang Ji-Suo,
孟祥国
,

物理学报 , 2006,
Abstract: 构造出了有限维Hilbert空间Roy型奇偶非线性相干态, 讨论了它们的正交归一完备性和振幅平方压缩效应. 研究表明, 在此空间中Roy型奇偶非线性相干态是归一完备的, 但不具有正交性; 当复参数相位角θ满足一定条件时它们存在振幅平方压缩效应, 同时导出了压缩条件与参数s,r以及函数f(n)之间的关系. 最后借助于数值计算, 发现对于5维(或7维)Hilbert空间中Roy型偶(或奇)非线性相干态, 当参数θ和Lamb-Dike参数η取某一给定值时, 在参数r变化的不同取值范围内, 它们均可以呈现振幅平方
Some nonclassical properties of a finite dimensional even and odd pair coherent state
有限维奇偶对相干态的非经典性质

Meng Xiang-Guo,Wang Ji-Suo,
孟祥国
,

物理学报 , 2007,
Abstract: 构造出了奇偶对相干态的指数形式, 并把奇偶对相干态推广至有限维Hilbert空间, 获得了有限维奇偶对相干态, 然后讨论了它们的正交归一完备性、反聚束效应和相位概率分布. 结果表明, 在此空间中奇偶对相干态具有归一完备性, 但不具有正交性. 借助于数值计算发现, 无论q取何值, 在参数|ξ|的不同取值范围内, 对于5维Hilbert空间中奇偶对相干态在模1和模2两个方向上均可呈现反聚束效应, 并且此双模光场的光子均是相关的. 而在7维Hilbert空间中,奇偶对相干态相位概率分
QUANTUM EFFECTS OF A NON-DISSIPATIVE MESOSCOPIC CIRCUIT WITH INDUCTANCE COUPLING
无耗散介观电感耦合电路的量子效应

Wang Jisuo,Liu Tangkun,Zhan Mingsheng,
,刘堂昆,詹明生

光子学报 , 2000,
Abstract: Starting from the equation of motion of a non dissipative mesoscopic circuit with inductance coupling,the quantum fluctuations of charge and current in the eigenstates of the system and the squeezed vacuum state are investigated.The results show that the quantum fluctuations of the charge and current exist in all of the states.The fluctuations in each component circuit are connected.
Quantization of the double-qubit structure and quantum computation
Liang Bao-Long,Wang Ji-Suo,
梁宝龙
,

中国物理 B , 2007,
Abstract: The quantization scheme of a double-qubit structure with superconducting quantum interference devices (SQUIDs) is given. By introducing unitary matrices and using spectral decompositions, the Hamiltonian operator of the system is exactly formulated in compact forms in spin-1/2 notation. A scheme of designing controlled-phase-shift (CPS) gates is also proposed by using this circuit system.
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