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Search Results: 1 - 10 of 27954 matches for " 韦联福 "
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q-玻色湮没算符二次方的本征态

物理学报 , 1993,
Abstract: 明显构造了aq2的两个正交归一本征态,并证明这两个本征态组成一个完备Hilbert空间。
湮没算符k次幂本征态的Wigner函数及其非经典特性
蓝海江,
量子电子学报 , 2010,
Abstract: 利用Fock态表象下的Wigner函数表达式,重构了湮没算符k次幂本征态的Wigner函数,并依据Wigner函数在相空间的分布规律,讨论了湮没算符k次幂本征态的非经典特性.数值结果表明湮没算符k次幂本征态的Wigner函数的分布与复参数α的取值有关;湮没算符1次幂的本征态(即相干态)为准经典态(其Wigner函数值总是非负的),而湮没算符大于或等于2次幂的本征态则都具有明显的非经典特性(它们的Wigner函数均出现了负值).
相干态的激发态及其非经典特性
,王顺金,揭泉林
科学通报 , 1997,
Abstract: 非经典光场态的研究,无论是在理论上还是在实验上都是十分引人注目的.业已证明,尽管相干态光场的行为是经典的,但在原子——场的非线性相互作用过程中,相干态光场的幺正或非幺正演化可以产生的各种非经典光场态,如压缩态及Schrodinger猫态等.本文利用最近Metha引入的并由范洪义给出严格表述的玻色算符的逆算符a-1及a+-1,讨论光场的另一个非经典态即相干态|Z>的k光子激发态a-k|Z>,它可以通过强度相关耦合Jaynes-Cummings模型的连续多次非幺正演化过程来产生.
Boson inverse operators and associated even and odd coherent states
玻色算符的逆算符及其相关的奇偶相干态

Yang Qing-yi,Wei Lian-Fu,Ding Liang-En,
杨庆怡
,,丁良恩

物理学报 , 2003,
Abstract: A new kind of even and odd coherent states i.e.the photon-added and photon-deple ted states,can be obtained from acting boson inverse operators on the usual even and odd coherent states.The new states are the eigenstates of the operators a^ -ka^k+2 and a^+-ka2a^+k,r espectively.The results show that these states may reveal the anti-bunching and quantum squeezing effects.
Elementary quantum gates with a single trapped ion driven by a classical laser field
单离子阱中基本量子逻辑单元的实现

Lai Hai-Jiang,Yang Qing-Yi,Wei Lian-Fu,
蓝海江
,扬庆怡,

物理学报 , 2002,
Abstract: A theoretical scheme is proposed for realizing the elementary quantum logic operations (one\|qubit gate and two\|qubit controlled rotation gate) with a single trapped cold ion driven by classical laser beams. The relevant experimental parameters for the realizations are given by numerical method. It may be performed easily by the present experimental technology, as neither the auxiliary atomic level nor the Lamb\|Dicke limit is required in the present scheme.
Wigner functions of multiple-photon excited coherent states
多光子激发相干态的Wigner函数

Lan Hai-Jiang,Pang Hua-Feng,Wei Lian-Fu,
蓝海江
,庞华锋,

物理学报 , 2009,
Abstract: Wigner函数的负性是非经典量子态的重要判据之一.利用Fock态表象下Wigner函数的一般表达式,重构了相干态|z〉的k光子激发态|+k,z〉~a-k|z〉(k≥1)的Wigner函数,并根据其数值结果讨论了该量子态的非经典特性(这里a-1为Bose湮没算符的逆算符,其作用相当于Bose产生算符).结果表明,不论k取奇数还是偶数,相干态的这些k光子激发态都具有非经典特性;而且k的取值越大,这些量子态的非经典特性越明显.
中国消费者网上购书意向模型与影响因素实证研究
An Empirical Study of the Intention Model and Affecting Factors of Online Book Buyers in Chinese Social Context
 [PDF]

, 赵芬
Service Science and Management (SSEM) , 2013, DOI: 10.12677/SSEM.2013.21001
Abstract:

本研究在对网上购书特点进行分析的基础上,在整理、归纳和分析网上购物行为的文献的基础上,提出了影响在线消费者网上购书的因素,并借鉴技术接受模型建立了消费者网上购买意向设想模型。同时,本研究还通过线上与线下的问卷调查研究收集了大量的数据,并运用SPSS、AMOS等统计软件对设想模型进行修正及检验,最终确立图书在线消费者购买意向模型,为图书网商改进管理提出参考建议。
This paper puts forward the factors which affects book buyers on the basis of analyzing the characteristics of on-line book-buying behavior and literatures about on-line shopping; then this paper founds probable consumers’ intent model of on-line book shopping and modifies the model by collecting a mass of data and analyzing it with statistical software—SPSS and AMOS, and finally, establishes the book buyers’ intent model of on-line book shopping and provide some managerial implications.

Wigner functions for the photon-added and photon-depleted even and odd coherent states
增、减光子奇偶相干态的Wigner函数

Yang Qing-Yi,Sun Jing-Wen,Wei Lian-Fu,Ding Liang-En,
杨庆怡
,孙敬文,,丁良恩

物理学报 , 2005,
Abstract: By using the definition of Wigner function in Fock states representation,Wigner functions for the photon-added and photon-depleted even and odd coherent states is reconstvucted. The results show that photon-added even and odd coherent states always demonstrate non-classical characteristics but photon-depleted even and odd coherent states demonstrate non-classical characteristics only when k take odd and even number respectively.
Generation of squeezed quantum states of a single trapped cold ion
制备囚禁冷离子的振动压缩量子态

Zhang Miao,Jia Huan-Yu,Ji Xiao-Hui,Si Kun,Wei Lian-Fu,
张淼
,贾焕玉,姬晓辉,司坤,

物理学报 , 2008,
Abstract: Based on the quantum dynamics of laser-ion interaction beyond the Lamd_Dicke limit, we discuss how to superpose a series of vibrational number states of a single trapped ion from the motional ground state. It is shown that, by controlling the durations and phases of the sequentially applied laser pulses, these superposed quantum states could well approach to the various target quantum states, e.g., squeezed coherent states, squeezed odd/even coherent states and squeezed vacuum states, etc.Their experimental realizabilities are also discussed.
拓宽函数发生器频率范围的一种简单方法
立华,
福州大学学报(自然科学版) , 1991,
Abstract: 采用微机最小系统,用计数器-存储器式数字法生成函数发生器,通过软件上专门的编 程设计获得拓宽函数发生器的频率范围.
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