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独立伪热光源的双光子干涉

量子光学学报 2006年第B8期12卷 46-47页

作者：翟艳花陈希浩吴令安中国科学院物理研究所光物理重点实验室北京100080 辽宁大学物理系辽宁沈阳110036

自Dirac提出一个光子只能与自己干涉之后，Mandel等人用两个独立的激光器实现一阶干涉实验，引发了人们对于独立光源干涉问题的更多关注和探讨。我们首次以两个独立的伪热光源观察到二阶关联亚波长干涉现象。在实验中发现当两个独立的... 详细信息

自Dirac提出一个光子只能与自己干涉之后，Mandel等人用两个独立的激光器实现一阶干涉实验，引发了人们对于独立光源干涉问题的更多关注和探讨。我们首次以两个独立的伪热光源观察到二阶关联亚波长干涉现象。在实验中发现当两个独立的光源偏振相同时，固定一个单光子探测器扫描另一个探测器，通过符合探测能够探测到类经典的一阶干涉；在反对称的方向（x，-x）同时扫描两个探测器，能够探测到亚波长干涉条纹。用经典的理论方法也可对此现象作简单的解释。当光源的偏振互相垂直时，则无法探测到类经典的一阶干涉或亚波长干涉。这些实验现象将有助于人们理解双光子干涉的本质；热光因其双光子特性有可能有些特殊的应用。

关键词：双光子干涉热光源单光子探测器干涉实验 Dirac 亚波长干涉问题干涉现象干涉条纹理论方法

Linear instability and adiabaticity of a dark state during conversion of two species of fermionic atoms to stable molecules

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Chinese Physics B 2012年第4期21卷 99-105页

作者：孟少英陈希浩吴炜傅立斌 Department of Physics Liaoning UniversityShenyang 110036China Science and Technology Computation Physics Laboratory Institute of Applied Physics and Computational MathematicsP.O.Box 8009Beijing 100088China Center for Applied Physics and Technology Peking UniversityBeijing 100871China

In the present paper, we investigate the linear instability and adiabaticity of a dark state during conversion of two species of fermionic atoms to stable molecules through the stimulated Raman adiabatic passage aided by Feshbach resonance. We analytically obtain the regions for the appearance of linear instability. Moreover, taking 40K and 6Li atom molecule conversion systems as examples, we give the unstable regions numerically. We also attempt to obtain the adiabatic criterion for this nonlinear system with classical adiabatic dynamics and study the adibaticity of the dark state with the adiabatic condition.

关键词： linear instability adiabaticity dark state atom molecule conversion

Instability, adiabaticity, and controlling effects of external fields for the dark state in a homonuclear atom tetramer conversion system

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Chinese Physics B 2014年第4期23卷 125-129页

作者：孟少英陈希浩吴炜傅立斌 Department of Physics Liaoning University Science and Technology Computation Physics Laboratory Institute of Applied Physics and Computational Mathematics Center for Applied Physics and Technology Peking University

In the present paper, we investigate the instability, adiabaticity, and controlling effects of external fields for a dark state in a homonuclear atom-tetramer conversion that is implemented by a generalized stimulated Raman adiabatic passage. We analytically obtain the regions for the appearance of dynamical instability and study the adiabatic evolution by a newly defined adiabatic fidelity. Moreover, the effects of the external field parameters and the spontaneous emissions on the conversion efficiency are also investigated.

关键词： dynamical instability adiabatic fidelity dark state atom-molecule conversion

Dynamical instability of the dark state in the conversion of Bose-Fermi mixtures into stable molecules

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Chinese Physics B 2011年第8期20卷 71-76页

作者：孟少英吴炜陈希浩张静傅立斌 Department of Physics Liaoning University Science and Technology Computation Physics Laboratory Institute of Applied Physics and Computational Mathematics Centre for Applied Physics and Technology Peking University

In this paper, we investigate the dynamical instability of the dark state in the conversion of Bose-Fermi mixtures into stable molecules through a stimulated Raman adiabatic passage aided by Feshbach resonance. We analytically obtain the regions where the dynamical instability appears and find that such instability in the Bose-Fermi mixture system is caused not only by bosonic interparticle interactions but also by Pauli blocking terms, which is different from the scenario of a pure bosonic system where instability is induced by nonlinear interparticle collisions. Taking a 40K-87Rb mixture as an example, we give the unstable regions numerically.

关键词： Bose-Fermi mixture dynamical instability dark state

High-order ghost imaging with N-colour thermal light

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Chinese Physics B 2010年第9期19卷 1-6页

作者：刘骞罗开红陈希浩吴令安 Laboratory of Optical Physics Institute of Physics and Beijing National Laboratory for Condensed Matter PhysicsChinese Academy of Sciences

High-order ghost imaging with thermal light consisting of N different frequencies is investigated. The high-order intensity correlation and intrinsic correlation functions are derived for such N-colour light. It is found that they are similar in form to those for the monochromatic case, thus most of the conclusions we obtained previously for monochromatic Nth-order ghost imaging are still applicable. However, we find that the visibility of the N-colour ghost image depends strongly on the wavelength used to illuminate the object, and increases as this wavelength increases when the test arm is fixed. On the contrary, changes of wavelength in the reference arms do not lead to any change of the visibility.

关键词： ghost imaging high-order intensity correlation intrinsic high-order correlation multi-colour thermal light

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酶法淀粉糖品的进展

淀粉与淀粉糖 1992年第1期 1-10页

作者：陈希浩

Third-order optical intensity correlation measurements of pseudo-thermal light

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Chinese Physics B 2014年第9期23卷 148-153页

作者：陈希浩吴炜孟少英李明飞 College of Physics Liaoning University Laboratory of Optical Physics Institute of PhysicsChinese Academy of Sciences

Third-order Hanbrury Brown-Twiss and double-slit interference experiments with a pseudo-thermal light are performed by recording intensities in single, double and triple optical paths, respectively. The experimental results verifies the theoretical prediction that the indispensable condition for achieving a interference pattern or ghost image in Nth-order intensity correlation measurements is the synchronous detection of the same light field by each reference detector, no matter the intensities recorded in one, or two, or N optical paths. It is shown that, when the reference detectors are scanned in the opposite directions, the visibility and resolution of the third-order spatial correlation function of thermal light is much better than that scanned in the same direction, but it is no use for obtaining the Nth-order interference pattern or ghost image in the thermal Nth-order interference or ghost imaging.

关键词： third-order intensity correlation thermal double-slit interference pseudo-thermal light

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从木屑制造酒精的工业生产

化学世界 1953年第8期 287-288页

作者： Д.В.Желтухин 陈希浩

苏联於近十五年来,又在国民经济中创造了一个新的重要部门——利用水解反应的工业。它从非食用的锯木业的废料及农产的废料(棉子壳,葵花子壳,玉米穗轴)中取得乙醇,蛋白酵母及其他重要的产品。从十九次党代表大会的文献中,可以知道在第... 详细信息

苏联於近十五年来,又在国民经济中创造了一个新的重要部门——利用水解反应的工业。它从非食用的锯木业的废料及农产的废料(棉子壳,葵花子壳,玉米穗轴)中取得乙醇,蛋白酵母及其他重要的产品。从十九次党代表大会的文献中,可以知道在第五个五年计划中,水解工业等已获得全面的发展。大家知道,锯木厂里锯木的时候,从1立方公尺的木材里,可以得到0.6立方公尺的锯品(板,方)及0.4立方公尺的废料(锯屑,小片,小条)。一直到水解工厂建立以前,那些废料大量地存积着,致使锯木厂为着防火设施及清除场地而付出钜额

关键词：酒精乙醇水解器一侗木屑废材

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罐头标准中“杂质”问题的商榷

食品与发酵工业 1980年第1期 71-72页

作者：陈希浩

轻工业部颁发的罐头标准,对于“杂质”这一项都统一规定了“不允许存在”。通过实践,感到这样的规定太笼统,如果死扣文字,要求食品绝对纯粹,这就不切合实际。那末在罐头食品的检验中对“杂质”问题究应如何掌握,值得大家探讨。

关键词：联合国日本罐头食品罐装食品