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Hadron and li.ht nucleus radi. from electron scatteri.g

Chi.ese Physi.s C 2022年第12期46卷 1-15页

作者：崔钫 Dani.le Bi.osi.Crai. D.Roberts Sebasti.n M.Schmi.t School of Physi.s Nanjing UniversityNanjing 210093China institute for Nonperturbati.e Physi.s Nanjing UniversityNanjing 210093China European Centre for Theoreti.al Studi.s i. Nuclear Physi.s and Related Areas Vi.la Tambosi Strada delle Tabarelle 286I-38123 Villazzano(TN)Italy Helmholtz-Zentrum Dresden-Rossendorf Dresden D-01314Germany RWTH Aachen Uni.ersi.y Ⅲ.Physikalisches Institut BAachen D-52074Germany

Conceptually,radi. are amongst the si.plest Poi.caré-i.vari.nt properti.s that can be associ.ted wi.h hadrons and li.ht nuclei.Accurate values of these quanti.i.s are necessary so that one may judge the character of putati.e soluti.ns to the strong i.teracti.n problem wi.hi. the Standard Model.However,li.i.i.g thei. abi.i.y to serve i. thi. role,recent measurements and new analyses of older data have revealed uncertai.ti.s and i.preci.i.ns i. the radi. of the proton,pi.n,kaon,and deuteron.i. the context of radi.s measurement usi.g electron+hadron elasti. scatteri.g,the past decade has shown that reli.ble extracti.n requi.es mi.i.i.ati.n of bi.s associ.ted wi.h practi.i.ner-dependent choi.es of data fi.ti.g functi.ns.Di.ferent answers to that challenge have been offered;and thi. perspecti.e descri.es the stati.ti.al Schlessi.ger poi.t method(SPM),i. uni.yi.g appli.ati.ns to proton,pi.n,kaon,and deuteron radi..Grounded i. analyti. functi.n theory,i.dependent of assumpti.ns about underlyi.g dynami.s,free from practi.i.ner-i.duced bi.s,and appli.able i. the same form to di.erse systems and observables,the SPM returns an objecti.e expressi.n of the i.formati.n contai.ed i. any data under consi.erati.n.i.s robust nature and versati.i.y make i. sui.able for use i. many branches of experi.ent and theory.

关键词： elasti. electromagneti. form factors lepton scatteri.g from hadrons and li.ht nuclei emergence of mass muoni. atoms proton Nambu-Goldstone modes-pi.n and kaon deuteron strong i.teracti.ns i. the standard model of parti.le physi.s

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Refracti.n Characteri.ti.s of Cold Plasma Thi. Fi.m as a Left-Handed Metamateri.l

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Chi.ese Physi.s Letters 2011年第6期28卷 126-129页

作者： Cumali.Sabah Johann Wolfgang Goethe Uni.ersi.y Physikalisches InstitutMax-von-Laue-Strasse 1D-60438Frankfurt am MainGermany

A methodi.al analysi. of refracti.n characteri.ti.s of a plane wave wi.h any arbi.rary polari.ati.n by a cold plasma thi. fi.m as a left-handed metamateri.l(CPTF-LHM)whi.h has si.ultaneously negati.e permi.ti.i.y and permeabi.i.y i. presented.Numeri.al calculati.ns are performed by the transfer matri. method usi.g an i.-house developed si.ulati.n program code.The results strongly recommend a possi.i.i.y of manufacturi.g anti.reflecti.n and/or total-transmi.si.n coati.gs and fi.ters for a wi.e frequency range and/or by tuni.g the fracti.n of thi.kness of the CPTF-LHM.

关键词： polari.ati.n Plasma method

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Reali.ati.n of double resonance for a bri.ht frequencytunable source of narrowband entangled photons

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Chi.ese Physi.s B 2011年第2期20卷 235-238页

作者：杨剑赵天明张涵杨涛包小辉潘建伟 Hefei.Nati.nal Laboratory for Physi.al Sci.nces at Mi.roscale and Department of Modern Physi.s University of Science and Technology of China physikalisches institut der Uni.ersi.aet Hei.elberg

i. thi. paper, we report an i.teresti.g phenomenon when preci.ely adjust the tuni.g crystal for double-resonance of a type-i. confi.ured parametri. ampli.i.r cavi.y, whi.h i. later veri.i.d as a cavi.y-enhanced effect i. opti.s ali.nment. The theoreti.al result i.di.ates that an angle accuracy error wi.hi. 0.09° i. necessary to achi.ve a hi.h contrast rati. of 100：1 for a cavi.y wi.h a fi.esse of about 205, whi.h i. cruci.l but hi.h-demandi.g to get a hi.h-quali.y narrowband entanglement source. Meanwhi.e, we fi.ure out a method to release such a hi.h requi.ement and get hi.h vi.i.i.i.y i. a moderate-accuracy ali.nment.

关键词： opti.s ali.nment double-resonance cavi.y-enhanced narrowband entanglement

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i.agi.g Electroni. Structure of Carbon Nanotubes by Voltage-Contrast Scanni.g Electron Mi.roscopy

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Nano Research 2008年第4期1卷 321-332页

作者： Aravi.d Vi.ayaraghavan Sabi.e Blatt Chri.toph Marquardt Si.one Dehm Raghav Wahi.Frank Hennri.h Ralph Krupke institut für Nanotechnologi. Forschungszentrum KarlsruheD-76344 Eggenstein-LeopoldshafenGermany physikalisches institut Universität KarlsruheD-76021 KarlsruheGermany

We i.troduce voltage-contrast scanni.g electron mi.roscopy(VC-SEM)for vi.ual characteri.ati.n of the electroni. properti.s of si.gle-walled carbon nanotubes.VC-SEM i.volves tuni.g the electroni. band structure and i.agi.g the potenti.l profi.le along the length of the nanotube.The resultant secondary electron contrast allows to di.ti.gui.h between metalli. and semi.onducti.g carbon nanotubes and to follow the swi.chi.g of semi.onducti.g nanotube devi.es,as confi.rmed by i. si.u electri.al transport measurements.We demonstrate that hi.h-densi.y arrays of i.di.i.ual nanotube devi.es can be rapi.ly and si.ultaneously characteri.ed.A leakage current model i. combi.ati.n wi.h fi.ni.e element si.ulati.ns of the devi.e electrostati.s i. presented i. order to explai. the observed contrast evoluti.n of the nanotube and surface electrodes.Thi. work serves to fi.ll a voi. i. electroni. characteri.ati.n of molecular devi.e archi.ectures.

关键词： Carbon nanotubes electroni. properti.s voltage-contrast scanni.g electron mi.roscopy electrostati.s

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Acousti. plasmoni.s of Au grati.g/Bi.Se3 thi. fi.m/sapphi.e hybri. structures

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Chi.ese Physi.s B 2020年第6期29卷 49-53页

作者：李伟武 Konstanti. Ri.gel 刘传普 Alexey Taski. Yoi.hi.Ando 廖志敏 Marti. Dressel 严缘 physikalisches institut Universitat StuttgartPfaffenwaldring 5770550 StuttgartGermany State Key Laboratory for Mesoscopi. Physi.s School of PhysicsPeking UniversityBeijing 100871China Physi.s institute Ⅱ University of Cologne50937 KolnGermany physikalisches institut der Uni.ersi.at Wurzburg 97074 WurzburgGermany institute for Topologi.al i.sulators 97074 WurzburgGermany

The surface plasmon polari.ons of the topologi.al i.sulator Bi.Se3 can be exci.ed by usi.g etched grati.g or grave structures to compensate the wave vector mi.match of the i.ci.ent photon and plasmon. Here, we demonstrate novel gold grati.g/Bi.Se3 thi. fi.m/sapphi.e hybri. structures, whi.h allow the exci.ati.n of surface plasmon polari.ons propagati.g through nondestructi.e Bi.Se3 thi. fi.m wi.h the help of gold di.fracti.e grati.gs. Uti.i.i.g peri.di. Au surface structures,the momentum can be matched and the normal-i.ci.ence i.frared reflectance spectra exhi.i. pronounced di.s. When the wi.th of the gold grati.g W(wi.h a peri.di.i.y 2 W) i.creases from 400 nm to 1500 nm, the resonant frequenci.s are tuned from about 7000 cm-1 to 2500 cm-1. i. contrast to the expected ■ di.persi.n for both massi.e and massless fermi.ns,where q ~π/W i. the wave vector, we observe a sound-li.e li.ear di.persi.n even at room temperature. Thi. surface plasmon polari.ons wi.h li.ear di.persi.n are attri.uted to the uni.ue noni.vasi.e fabri.ati.n method and hi.h mobi.i.y of topologi.al surface electrons. Thi. novel structure provi.es a promi.i.g appli.ati.n of Di.ac plasmoni.s.

关键词： surface plasmon polari.ons topologi.al i.sulator i.frared optoelectroni.s nanophotoni.s

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Second harmoni. generati.n spectroscopy on hybri. plasmoni./di.lectri. nanoantennas

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Li.ht(Sci.nce & Appli.ati.ns) 2016年第1期5卷 803-809页

作者： Hei.o Li.nenbank Yevgen Grynko Jens Förstner Stefan Li.den physikalisches institut Rheinische Friedrich-Wilhelms Universität BonnBonn 53115Germany Department of Electri.al Engi.eeri.g Universität PaderbornPaderborn 33102Germany

Plasmoni. nanoantennas provi.e unprecedented opportuni.i.s to concentrate li.ht fi.lds i. subwavelength-si.ed volumes.By placi.g a nonli.ear di.lectri. nanoparti.le i. such a hot spot,one can hope to take advantage of both the fi.ld enhancement provi.ed by nanoantennas and the large,nonli.ear opti.al suscepti.i.i.y of di.lectri. nanoparti.les.To test thi. concept,we combi.e gold gap nanoantennas wi.h second-order,nonli.ear zi.c sulfi.e nanoparti.les,and performsecond harmoni. generati.n(SHG)spectroscopy on the combi.ed hybri. di.lectri./plasmoni. nanoantennas as well as on the i.di.i.ual consti.uents.We fi.d that SHG from the bare gold nanoantennas,even though i. should be forbi.den due tosymmetry reasons,i. several orders ofmagni.ude larger than that of the bare zi.c sulfi.e nanoparti.les.Even stronger second harmoni. si.nals are generated by the hybri. di.lectri./plasmoni. nanoantennas.Control experi.ents wi.h nanoantennas contai.i.g li.ear lanthanumfluori.e nanoparti.les reveal;however,that the i.creasedSHG effi.i.ncy of the hybri. di.lectri./plasmoni. nanoantennas does not depend on the nonli.ear opti.al suscepti.i.i.y of the di.lectri. nanoparti.les but i. an effect of the modi.i.ati.n of the di.lectri. envi.onment.The combi.ati.n of a hybri. di.lectri./plasmoni. nanoantenna,whi.h i. only resonant for the i.comi.g pump li.ht fi.ld,wi.h a second nanoantenna,whi.h i. resonant for the generated second harmoni. li.ht,allows for a further i.crease i. the effi.i.ncy of SHG.As the second nanoantenna medi.tes the coupli.g of the second harmoni. li.ht to the far fi.ld,thi. double-resonant approach also provi.es us wi.h control over the polari.ati.n of the generated li.ht.

关键词： nanoantennas plasmoni.s second harmoni. generati.n

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Observati.n of photon recoi. effects i. si.gle-beam absorpti.n spectroscopy wi.h an ultracold stronti.m gas

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Chi.ese Physi.s B 2022年第1期31卷 485-491页

作者：胡发超檀灿竹江玉海 Matthi.s Wei.emüller 朱兵 Hefei.Nati.nal Laboratory for Physi.al Sci.nces at the Mi.roscale University of Science and Technology of ChinaHefei 230026China CAS Center For Excellence i. Quantum i.formati.n and Quantum Physi.s University of Science and Technology of ChinaHefei 230026China Shanghai.Advanced Research institute Chinese Academy of Sciences(CAS)Shanghai 201210China physikalisches institut Universität HeidelbergIm Neuenheimer Feld 22669120 HeidelbergGermany

We report on observi.g photon recoi. effects i. the absorpti.n of a si.gle monochromati. li.ht at 689 nm through an ultracold ^(88)Sr gas,where the recoi. frequency i. comparable to natural li.ewi.th of the narrow-li.e transi.i.n 5s^(2) ^(1)S_(0)-5s5p ^(3)P_(1) i. stronti.m.i. the regi.e of hi.h-saturati.n,the absorpti.n profi.e becomes asymmetri. due to the photon-recoi. shi.t,whi.h i. of the same order as the natural li.ewi.th.The li.eshape i. descri.ed by an extensi.n of the opti.al Bloch equati.ns i.cludi.g the momentum transfers to atoms duri.g emi.si.n and absorpti.n of photons.Our work reveals the photon recoi. effects i. a si.plest si.gle-beam absorpti.n setti.g,whi.h i. of si.ni.i.ant relevance to other appli.ati.ns such as saturati.n spectroscopy,Ramsey i.terferometry,and absorpti.n i.agi.g.

关键词： photon recoi. absorpti.n spectroscopy ultracold stronti.m gas

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Magneti. latti.es for ultracold atoms and degenerate quantum gases

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Sci.nce Bulleti. 2016年第14期61卷 1097-1106页

作者： Yi.o Wang Pri.ce Surendran Smi.ha Jose Ti.n Tran i.an Herrera Shannon Whi.lock Russell Mc Lean Andrei.Si.orov Peter Hannaford Centre for Quantum and Opti.al Sci.nce Swinburne University of Technology Dodd-Walls Centre for Photoni. and Quantum Technologi.s Department of Physics University of Auckland physikalisches institut Universitt Heidelberg

We revi.w recent developments i. the use of magneti. latti.es as a complementary tool to opti.al latti.es for trappi.g peri.di. arrays of ultracold atoms and degenerate quantum gases. Recent advances i.clude the reali.ati.n of Bose–Ei.stei. condensati.n i. multi.le si.es of a magneti. latti.e of one-di.ensi.nal mi.rotraps, the trappi.g of ultracold atoms i. square and tri.ngular magneti. latti.es,and the fabri.ati.n of magneti. latti.e structures wi.h submi.ron peri.d sui.able for quantum tunnelli.g experi.ents.Fi.ally, we descri.e a proposal to uti.i.e long-range i.teracti.g Rydberg atoms i. a large spaci.g magneti. latti.e to create i.teracti.ns between atoms on nei.hbouri.g si.es.

关键词：超冷原子量子气体磁晶格简并玻色爱因斯坦凝聚相互作用晶格原子晶格结构

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Ga_xi._(1-x)P/AlGai.P多量子阱的吸收/反射光谱:多光束干涉的影响与消减

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Journal of Semi.onductors 2004年第6期25卷 651-656页

作者：邵军 4 physikalisches institut

通过测量GaAs基Gaxi.1-xP/AlGai.P多量子阱的光学吸收谱 ,揭示出采用吸收谱研究该量子阱系统所遭遇的困难 ,并判明吸收谱中高频振荡干扰的来源为多光束干涉 ,从而指出消减振荡干扰的有效途径在于降低量子阱样品的有效厚度 .提出了适用... 详细信息

通过测量GaAs基Gaxi.1-xP/AlGai.P多量子阱的光学吸收谱 ,揭示出采用吸收谱研究该量子阱系统所遭遇的困难 ,并判明吸收谱中高频振荡干扰的来源为多光束干涉 ,从而指出消减振荡干扰的有效途径在于降低量子阱样品的有效厚度 .提出了适用于反射光谱测量的样品结构 ,并在实验中观察到激子跃迁 .通过对反射谱进行导数操作 ,达到了准确测定激子跃迁能量的目的。

关键词：吸收谱反射谱多量子阱多光束干涉谱导数

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Si.ulati.n of secondary nucleati.n of polymer crystalli.ati.n vi. a model of mi.roscopi. ki.eti.s

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Chi.ese Chemi.al Letters 2015年第9期26卷 1105-1108页

作者： Kun-Lun Xu Bao-Hua Guo Renate Rei.er Günter Rei.er Jun Xua Advanced Materi.ls Laboratory of Mi.i.try of Educati.n Department of Chemical EngineeringTsinghua University physikalisches institut and Frei.urg Materi.ls Research Center Albert-Ludwigs-Universitt

We present si.ulati.ns of the mechani.m of secondary nucleati.n of polymer crystalli.ati.n,based on a new model accounti.g for the mi.roscopi. ki.eti.s of attachi.g and detachi.g.As the key feature of the model,we i.troduced multi.ody-i.teracti.n parameters that establi.h correlati.ns between the attachi.g and detachi.g rate constants and the resulti.g thi.kness and wi.th of the crystalli.e lamella.Usi.g MATLAB and Monte Carlo method,we followed the evoluti.n of the secondary nuclei.as a functi.n of vari.us multi.ody-i.teracti.n parameters.We i.enti.i.d three di.ferent growth progressi.ns of the crystal：（i. Wi.eni.g,（i.） thi.keni.g and（i.i. si.ultaneously thi.keni.g and wi.eni.g of lamellar crystals,controlled by the correspondi.g ki.eti. parameters.

关键词： Computer si.ulati.n Secondary nucleati.n Polymer crystalli.ati.n Monte Carlo si.ulati.n Mi.roscopi. ki.eti.s model Multi.body i.teracti.n

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