共查询到16条相似文献,搜索用时 125 毫秒
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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.
关键词:
新的奇偶非线性相干态
压缩效应
反聚束
相位概率分布 相似文献
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相干态光场的位相统计性质 总被引:5,自引:0,他引:5
根据Pegg-Barnett位相定义,计算了相干态光场的位相概率分布函数,并且进行了数值模拟。研究表明在真空态时,位相分布曲线为一条直线;相干态下位相分布曲线表现为:均匀分布→泊松分布→均匀分布。 相似文献
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卢道明 《原子与分子物理学报》2008,25(4):875-880
利用数值计算方法,研究了有限维Hilbert空间一种新的奇偶非线性相干态的反聚束效应.研究结果表明:各有限维Hilbert空间新的偶非线性相干态均不出现反聚束效应.但各有限维Hilbert空间新的奇非线性相干态均可出现反聚束效应. 相似文献
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利用f-谐振子的产生和湮灭算符的逆算符,构造了两个非线性压缩单光子态,并借助于Pegg—Barnett位相算符公式和数值计算方法,研究了它们的位相概率分布。结果表明,两个非线性压缩单光子态的位相概率分布不同;与通常的压缩单光子态、非线性压缩真空态不同,在这两个非线性压缩单光子态中,其位相概率分布能明显地反映出不同的量子位相信息和干涉特性。 相似文献
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运用数值计算方法研究了有限维希尔伯特空间谐振子奇偶相干态的压缩特性.研究表明,有限维空间奇偶相干态展现了与通常奇偶相干态截然不同的压缩性质,奇相干态不存在二阶压缩但存在振幅平方压缩;偶相干态不仅存在压缩而且存在振幅平方压缩.通常的奇偶相干态是上述奇偶相干态的特例. 相似文献
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领头项相干态的PB位相统计性质 总被引:4,自引:1,他引:3
使用文献中给出的计算量子位相统计性质的方法计算了m取不同值时各领头相干态│a,m〉的量子位相统计性质,揭示出m和场强│a│这两个因素怎样影响│a,m〉的量子位相统计性质的,发现领头项相干态│a,m〉在场强│a│^2最接近m值时最好的相统计性质,从而加深了我们对相干态量子位相的性质和物理本质的理解。 相似文献
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Ji-Suo Wang Tang-Kun Liu Jian Feng Jin-Zuo Sun Ming-Sheng Zhan 《International Journal of Theoretical Physics》2003,42(12):2855-2862
Using the Pegg–Barnett formalism of phase operator, we obtain phase probability distributions of new even and odd nonlinear coherent states. It is shown that the distributions for the states are rather different, and unlike the case of ordinary even and odd coherent states the Pegg–Barnett distribution clearly reflects the different character of quantum interference in the case of the new even and odd coherent states. 相似文献
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Meng Xiang-Guo Wang Ji-Suo Li Yan-Ling 《International Journal of Theoretical Physics》2007,46(5):1205-1214
In this paper, a new kind of even and odd nonlinear coherent states (NLCSs) are introduced. Some nonclassical properties of
the states are investigated. It has been found that the new even and odd NLCSs exhibit quadrature squeezing and amplitude-squared
squeezing in the Y
2 direction, however the new odd NLCSs only display sub-Poissonian behaviour. The results show that the nonclassical properties
of the new even and odd NLCSs are rather different from those of the usual even and odd coherent states and NLCSs.
PACS numbers:42.50.-p, 03.65.-w 相似文献
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A new kind of even and odd nonlinear coherent states (EONLCSs) is introduced. Using the Pegg-Barnett formalism of phase operator we study the phase probability distributions of the new kind of EONLCSs. The numerical computation results show that the phase probability distributions for the new EONLCSs can clearly exhibit the different features of quantum interference and distinct from those of the ordinary even and odd coherent states (EOCSs) and EONLCSs. Based on the phase probability distributions we investigate the phase and number squeezing of the new EONLCSs. It is found that these states exhibit number squeezing for different ranges of the parameter |λ|. 相似文献
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Even and odd nonlinear coherent states 总被引:4,自引:0,他引:4
S. Sivakumar 《Physics letters. A》1998,250(4-6):257-262
New types of even and odd nonlinear coherent states are defined. The squeezed vacuum and the squeezed first excited state are shown to be even and odd nonlinear coherent states, respectively. The nonclassical properties of some related states are studied. 相似文献
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Ji-Suo Wang Tang-Kun Liu Jian Feng Jin-Zuo Sun 《International Journal of Theoretical Physics》2004,43(9):1907-1916
A class of even and odd nonlinear coherent states are introduced. The properties of some related states, including quadrature squeezing, antibunching effect and phase probability distribution, are studied. 相似文献