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Nonlinear coherent perfect photon absorber in asymmetrical atom–nanowires coupling system

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Chinese Physics B 2018年第11期27卷 494-497页

作者： xiuwen xia Xinqin Zhang Jingping Xu Mutian Cheng Yaping Yang Institute of Atomic and Molecular Physics and Functional Materials School of Mathematics and Physics Jinggangshan University Ji'an 343009 China MOE Key Laboratory of Advanced Micro-Structure Materials School of Physics Science and Engineering Tongji University Shanghai 200092 China School of Electrical Engineering & Information Anhui University of Technology Maanshan 243002 China

Coherent perfect absorption provides a method of light-controlling-light and has practical applications in optical communications. Recently, a cavity-based nonlinear perfect photon absorption extends the coherent perfect absorber（CPA）beyond the linear regime. As nanowire-based system is a more competitive candidate for full-optical device, we introduce a nonlinear CPA in the single two-level atom–nanowires coupling system in this work. Nonlinear input–output relations are derived analytically, and three contributions of atomic saturation nonlinearity are explicit. The consociation of optical nonlinearity and destructive interference makes it feasible to fabricate a nonlinear monoatomic CPA. Our results also indicate that a nonlinear system may work linearly even when the incoming lights are not weak any more. Our findings show promising applications in full-optical devices.

关键词： single-atom system atom-nanowires coupling nonlinear coherent perfect absorber

Manipulation of nonreciprocal unconventional photon blockade in a cavity-driven system composed of an asymmetrical cavity and two atoms with weak dipole–dipole interaction

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Chinese Physics B 2022年第7期31卷 302-308页

作者： Xinqin Zhang xiuwen xia Jingping Xu Haozhen Li Zeyun Fu Yaping Yang Institute of Atomic and Molecular Physics and Functional Materials School of Mathematics and PhysicsJinggangshan UniversityJi’an 343009China MOE Key Laboratory of Advanced Micro-structure Materials School of Physics Science and EngineeringTongji UniversityShanghai 200092China College of Communication Engineering Hangzhou Dianzi UniversityHangzhou 310018China

We present a work of manipulating collective unconventional photon blockade(UCPB)and nonreciprocal UCPB(NUCPB)in a cavity-driven system composed of an asymmetrical single-mode cavity and two interacting identical twolevel atoms(TLAs).When the atoms do not interact directly,the frequency and intensity restrictions of collective UCPB can be specified,and a giant NUCPB exists due to the splitting of optimal atom–cavity coupling strength in proper parameter ***,if a weak atom–atom interaction which provides a new and feeble quantum interference pathway to UCPB is taken into account,two restrictions of UCPB are combined complexly,which are rigorous to be matched *** to the push-and-pull effect induced by weak dipole–dipole interaction,the UCPB regime is compressed more or *** is improved as a higher contrast is present when the two complex UCPB restrictions are matched,while it is suppressed when the restrictions are *** general,whether NUCPB is suppressed or promoted depends on its working *** findings show a prospective access to produce giant quantum nonreciprocity by a couple of weakly interacting atoms.

关键词： unconventional photon blockade quantum nonreciprocity dipole–dipole interaction

Nonreciprocal single-photon scattering mediated by a drivenΛ-type three-level giant atom

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Communications in Theoretical Physics 2024年第11期76卷 113-122页

作者： xiaopei Zhang Haozhen Li Ran Zeng Miao Hu Mengmeng Xu Xuefang Zhou Yang Lan xiuwen xia Jingping Xu Yaping Yang School of Communication Engineering Hangzhou Dianzi UniversityHangzhou 310018China Zhejiang Province Key Laboratory of Quantum Technology and Device Zhejiang UniversityHangzhou 310027China Institute of Atomic and Molecular Physics and Functional Materials School of Mathematics and PhysicsJinggangshan UnivsersityJi'an 343009China Key Laboratory of Advanced Micro-Structured Materials of Ministry of Education School of Physics Science and EngineeringTongji UniversityShanghai 200092China

A waveguide-QED with giant atoms,which is capable of accessing various limits of a small one,provides a new paradigm to study photon ***,how to achieve nonreciprocal photon transmissions via such a giant atom setup is highly *** this study,the nonreciprocal single-photon scattering characteristics of a double-drivenΛ-type three-level giant atom,where one of the transition couples to a 1D waveguide at two separate points,and the other is driven by two coherent driving fields,are *** is found that a frequency-tunable single-photon diode with an ideal contrast ratio can be achieved by properly manipulating the local coupling phases between the giant atom and the waveguide,the accumulation phase between the two waveguide coupling points,the Rabi frequencies and phase difference of the two driven *** to the previous single driving schemes,on the one hand,the presence of the second driving field can provide more tunable parameters to manipulate the nonreciprocal single-photon scattering *** the other hand,here perfect nonreciprocal transmission for photons with arbitrary frequencies is achievable by tuning the driving phases while the two driving fields keep on turning,which provides an alternative way to control the nonreciprocal single-photon ***,the results reveal that both the location and width of each optimal nonreciprocal transmission window is also sensitive to the driving detuning,and a single-photon diode with wide or narrow bandwidth can be realized based on *** results may be beneficial for designing nonreciprocal single-photon devices based on a double-driven giant atom setup.

关键词： giant atom nonreciprocal single-photon scattering waveguide-QED

New ternary compound La_8Al_(13)Sn_3

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Rare Metals 2009年第5期28卷 491-493页

作者： HE Wei xia xiuwen ZHANG Jiliang HUANG Jinli LIU Yixin Key Laboratory of Nonferrous Metal Materials and New Processing Technology （Ministry of Education） College of Materials Science and Engineering Guangxi University Nanning 530004 China Department of Physics and Electronic Information Science Guangxi Teachers Education University Nanning 530023 China

A new ternary compound La8Al13Sn3 was synthesized and studied by means of X-ray powder diffraction technique. The compound La8Al13Sn3 crystallizes in a hexagonal AlB2-type structure with space group P6/mmm （No. 191） and the lattice parameters a = 0.44919（1） nm and c = 0.43835（1） nm. The Smith and Snyder figure of merit for index, FN, is F30 = 197.3（30）. The Rietveld refinement for the crystal structure of the compound was carried out successfully. The liability R-factors of Rietveld refinement are Rp = 0.114 and Rwp = 0.148. The compound La8Al13Sn3 decomposes into LaAl2 with cubic structure and space group Fd 3m （227）, LaAl3 with hexagonal structure and space group P63/mmc （194）, and Sn at 720°C.

关键词： crystallography X-ray diffraction Reitveld method rare earth compounds

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文化自信与社会主义核心价值观

中州学刊 2016年第11期 80-86页

作者：梁秀文夏从亚中国石油大学(华东)马克思主义学院

文化是对人类生活重大问题的根本把握,文化自信涵盖文化内容、文化解释力、文化表达和文化传播等方面。文化自信必须考虑文化中包含的各种因素以及它们之间的因果关系,中国特色社会主义文化包含丰富的文化内容,社会主义核心价值观是文... 详细信息

文化是对人类生活重大问题的根本把握,文化自信涵盖文化内容、文化解释力、文化表达和文化传播等方面。文化自信必须考虑文化中包含的各种因素以及它们之间的因果关系,中国特色社会主义文化包含丰富的文化内容,社会主义核心价值观是文化自信的本质与灵魂。通过培育、践行社会主义核心价值观,实现文化认同,应对文化挑战,促成文化交流,引领文化创新,凸显文化解释力,才能逐步增强、实现文化自信。

关键词：文化文化自信社会主义核心价值观

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对外汉语属性词基本特征研究

现代语文 2021年第12期 76-84页

作者：夏秀文东北师范大学国际汉学院吉林长春130024

在《汉语水平词汇与汉字等级大纲》中,共有61个专有属性词。在构词方面,这些专有属性词以双音节偏正式复合词为主。在语法方面,它们最常见的用法是作定语;往往成对出现;在微博和口语中,体现出性质形容词化的趋势。在语义方面,它们大多... 详细信息

在《汉语水平词汇与汉字等级大纲》中,共有61个专有属性词。在构词方面,这些专有属性词以双音节偏正式复合词为主。在语法方面,它们最常见的用法是作定语;往往成对出现;在微博和口语中,体现出性质形容词化的趋势。在语义方面,它们大多表示事物的特征;在《现代汉语词典》中的释义模式为“……的”;经常与抽象名词或集合名词搭配。在语用方面,它们的使用频率普遍较高;大多用在报刊和科技这两种正式语体中;具有比较浓厚的书面语体色彩。

关键词：属性词构词特征语法特征语义特征语用特征对外汉语

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对外汉语“看”语素构式群比较研究

现代语文 2020年第7期 106-111页

作者：夏秀文东北师范大学国际汉学院吉林长春130024

结合构式理论,通过检索语料库,从构式义、构式与词项的压制互动、构式的语法功能与搭配、构式的主观性与语用功能、构式的形成机制、构式的扩展等方面,对“看”语素构式群——“看把你X的”“看你X的”“看X的了”进行比较。

关键词：构式理论 “看”语素构式群比较研究

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李白诗歌颜色词句法性质分析

励耘语言学刊 2012年第2期 48-69页

作者：夏秀文东北师范大学留学生教育学院

李白诗歌颜色词都可以做形容词，有些还可以充当名词。其结构以单纯颜色词为主，充当定语占优势，描写景物时与重叠颜色词亦可充当谓语，李白诗歌颜色词亦有一些特殊句式，我们将一一进行分析；李白诗歌颜色词的构式主要有并列、补充和... 详细信息

李白诗歌颜色词都可以做形容词，有些还可以充当名词。其结构以单纯颜色词为主，充当定语占优势，描写景物时与重叠颜色词亦可充当谓语，李白诗歌颜色词亦有一些特殊句式，我们将一一进行分析；李白诗歌颜色词的构式主要有并列、补充和使动三种。

关键词：李白颜色词句法

李白诗歌中以五种正色为原型的颜色词范畴分析

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励耘语言学刊 2011年第2期 24-41页

作者：夏秀文东北师范大学留学生教育学院

李白诗歌中的颜色词除几种正色以外,其在《说文解字》中都不是专门表示颜色的。依据范畴中的原型理论,我们发现,以古代的五种正色——＂白、青、赤、黑、黄＂为原型,可以概括除＂彩＂以外的李白诗歌中所有颜色词。依据各种颜色词的释义... 详细信息

李白诗歌中的颜色词除几种正色以外,其在《说文解字》中都不是专门表示颜色的。依据范畴中的原型理论,我们发现,以古代的五种正色——＂白、青、赤、黑、黄＂为原型,可以概括除＂彩＂以外的李白诗歌中所有颜色词。依据各种颜色词的释义及光波长短,可以大致得到下面的关于本文提到的颜色词的连续统,之所以会出现这种连续统,主要是由于颜色词是形容词,而形容词具有程度方面的差别。

关键词：李白颜色词正色范畴