Annalen der Physik最新文献

{"title":"Energy Localization and Topological Defect in Spherical Non-Hermitian Topolectrical Circuits","authors":"Xizhou Shen,&nbsp;Xiumei Wang,&nbsp;Haotian Guo,&nbsp;Xingping Zhou","doi":"10.1002/andp.202400026","DOIUrl":"10.1002/andp.202400026","url":null,"abstract":"<p>This work examines the energy localization in non-Hermitian systems, with a particular focus on the influence of topological defects in spherical models. Alterations in the mode distribution are explored within non-Hermitian Su-Schrieffer-Heeger (SSH) chains affected by these defects, utilizing the Maximum Skin Corner Weight (MaxWSC) metric. An innovative spherical model is introduced, created by segmenting spheres into 1D chain structures, to study the non-Hermitian skin effect (NHSE) within a spherical geometric framework. Experimental validations conducted on Printed Circuit Boards (PCBs) corroborate the theoretical insights. These findings not only substantiate the theoretical approach but also illustrate the capability of engineered circuit systems to mimic complex non-Hermitian phenomena, highlighting the utility of spherical geometries in exploring NHSE and topological phenomena in non-Hermitian systems.</p>","PeriodicalId":7896,"journal":{"name":"Annalen der Physik","volume":"536 11","pages":""},"PeriodicalIF":2.2,"publicationDate":"2024-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142182165","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Quantum Correlation Enhanced with Quantum Coherent Feedback Control in a Cavity-magnon Hybrid System","authors":"Yue-Han Lin,&nbsp;Ya-Qin Lin,&nbsp;Zhi-Ying Lin,&nbsp;Rong-Can Yang,&nbsp;Hong-Yu Liu","doi":"10.1002/andp.202400221","DOIUrl":"10.1002/andp.202400221","url":null,"abstract":"<p>A scheme is proposed to enhance quantum correlation, including entanglement and steering, for two magnon modes in a cavity-magnon hybrid system through coherent quantum feedback. The hybrid system consists of a microwave cavity and two YIG spheres, which incorporates a nonlinear flux-driven Josephson parametric amplifier in order for the generation of two photons within the cavity simultaneously. A quantum coherent feedback loop is used for the reduction of effective dissipation. By modulating feedback parameters, optimal bipartite and tripartite entanglement, as well as quantum steering are derived. Importantly, compared with the same setup without coherent feedback, the proposed scheme significantly improves quantum correlation. Furthermore, by optimizing the feedback reflectivity and the ratio of cavity-magnon coupling strength, the enhancement of asymmetric steering can be controlled. Notably, incorporating the feedback loop effectively increase its robustness against thermal noise, thus the scheme offer better prospect for experimental development. This study paves the way for advancements in quantum information processing and quantum entanglement within cavity-magnonics.</p>","PeriodicalId":7896,"journal":{"name":"Annalen der Physik","volume":"536 11","pages":""},"PeriodicalIF":2.2,"publicationDate":"2024-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142182166","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Research Progress of Femtosecond Laser-Printed Perovskite Quantum Dots in Amorphous Glass","authors":"Han Xiao,&nbsp;Lingwei Zeng,&nbsp;Lei Lei,&nbsp;Daqin Chen","doi":"10.1002/andp.202400152","DOIUrl":"10.1002/andp.202400152","url":null,"abstract":"<p>Lead halide perovskite quantum dots (PeQDs) have garnered increasing attention due to their extraordinary optoelectronic properties. In recent years, femtosecond (fs) laser direct writing shows to be an effective way of inducing localized crystallization of PeQDs inside glass matrix while remaining their structural stability and optical performance. This article reviews the research progress on fs laser irradiation-induced nucleation/growth of PeQDs in glass and discusses the latest advancements in the use of the technology for optical data storage, micrometer-scale light-emitting diode (LED), information security protection, and other related fields. It offers novel insights and perspectives for exploring new functionality and device application of fs laser-printed PeQDs glass composite structures.</p>","PeriodicalId":7896,"journal":{"name":"Annalen der Physik","volume":"536 11","pages":""},"PeriodicalIF":2.2,"publicationDate":"2024-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142182167","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Topological Optical Waveguiding of Exciton-Polariton Condensates","authors":"J. Beierlein,&nbsp;O. A. Egorov,&nbsp;P. Gagel,&nbsp;T. H. Harder,&nbsp;A. Wolf,&nbsp;M. Emmerling,&nbsp;S. Betzold,&nbsp;F. Jabeen,&nbsp;L. Ma,&nbsp;S. Höfling,&nbsp;U. Peschel,&nbsp;S. Klembt","doi":"10.1002/andp.202400229","DOIUrl":"10.1002/andp.202400229","url":null,"abstract":"<p>1D models with topological non-trivial band structures are a simple and effective way to study novel and exciting concepts in topological photonics. In this work, the propagation of light-matter quasi-particles, so-called exciton-polaritons, is studied in waveguide arrays. Specifically, topological states are being investigated at the interface between dimer chains, characterized by a non-zero winding number. In order to exercise precise control over the polariton propagation, non-resonant laser excitation, as well as resonant excitation, are studied in transmission geometry. The results highlight a new platform for the study of quantum fluids of light and non-linear optical propagation effects in coupled semiconductor waveguides.</p>","PeriodicalId":7896,"journal":{"name":"Annalen der Physik","volume":"536 11","pages":""},"PeriodicalIF":2.2,"publicationDate":"2024-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/andp.202400229","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142182169","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Power Law \u0000 \u0000 \u0000 f\u0000 (\u0000 Q\u0000 )\u0000 \u0000 $f(Q)$\u0000 Cosmology with Bulk Viscous Fluid","authors":"Dheeraj Singh Rana,&nbsp;Raja Solanki,&nbsp;P. K. Sahoo","doi":"10.1002/andp.202400072","DOIUrl":"10.1002/andp.202400072","url":null,"abstract":"<p>In this work, a power law <span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <mi>f</mi>\u0000 <mo>(</mo>\u0000 <mi>Q</mi>\u0000 <mo>)</mo>\u0000 </mrow>\u0000 <annotation>$f(Q)$</annotation>\u0000 </semantics></math> model is explored, specifically, <span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <mi>f</mi>\u0000 <mrow>\u0000 <mo>(</mo>\u0000 <mi>Q</mi>\u0000 <mo>)</mo>\u0000 </mrow>\u0000 <mo>=</mo>\u0000 <mi>α</mi>\u0000 <msup>\u0000 <mi>Q</mi>\u0000 <mi>n</mi>\u0000 </msup>\u0000 </mrow>\u0000 <annotation>$f(Q)= alpha Q^n$</annotation>\u0000 </semantics></math>, along with viscous matter fluid having transport coefficient <span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <mi>ζ</mi>\u0000 <mo>=</mo>\u0000 <msub>\u0000 <mi>ζ</mi>\u0000 <mn>0</mn>\u0000 </msub>\u0000 <msqrt>\u0000 <mi>Ω</mi>\u0000 </msqrt>\u0000 <mo>+</mo>\u0000 <msub>\u0000 <mi>ζ</mi>\u0000 <mn>1</mn>\u0000 </msub>\u0000 <mi>Ω</mi>\u0000 <mi>H</mi>\u0000 </mrow>\u0000 <annotation>$zeta = zeta _0 sqrt {Omega } + zeta _1 Omega H$</annotation>\u0000 </semantics></math>. The corresponding analytical solution is derived and then confronted with recent cosmic data. The Markov Chain Monte Carlo (MCMC) sampling technique is utilized to estimate the mean value of arbitrary parameters, by incorporating Cosmic Chronometers and recently published Pantheon+Analysis samples. In addition, some cosmological parameters are reconstructed by resampling the chains obtained by emcee, incorporating 6000 samples. It is found that the matter-energy density depicts the expected positive behavior, whereas the effective pressure indicates the negative behavior that is leading the accelerating expansion, which is further predicted in the effective EoS parameter. Further, the asymptotic nature of the assumed model is investigated by invoking phase-space analysis. It is concluded that the assumed viscous <span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <mi>f</mi>\u0000 <mo>(</mo>\u0000 <mi>Q</mi>\u0000 <mo>)</mo>\u0000 </mrow>\u0000 <annotation>$f(Q)$</annotation>\u0000 </semantics></math> model successfully predicts an evolution of the universe from decelerated epoch to stable accelerated de-Sitter epoch.</p>","PeriodicalId":7896,"journal":{"name":"Annalen der Physik","volume":"536 11","pages":""},"PeriodicalIF":2.2,"publicationDate":"2024-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142182172","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Optical Trapping with Focused Surface Waves","authors":"Yifeng Xiang,&nbsp;Xi Tang,&nbsp;Changjun Min,&nbsp;Guanghao Rui,&nbsp;Yan Kuai,&nbsp;Fengya Lu,&nbsp;Pei Wang,&nbsp;Hai Ming,&nbsp;Qiwen Zhan,&nbsp;Xiaocong Yuan,&nbsp;Joseph R. Lakowicz,&nbsp;Douguo Zhang","doi":"10.1002/andp.201900497","DOIUrl":"10.1002/andp.201900497","url":null,"abstract":"<p>Near-field optical trapping can be realized with focused evanescent waves that are excited at the water–glass interface due to the total internal reflection, or with focused plasmonic waves excited on the water–gold interface. Herein, the performance of these two kinds of near-field optical trapping techniques is compared using the same optical microscope configuration. Experimental results show that only a single-micron polystyrene bead can be trapped by the focused evanescent waves, whereas many beads are simultaneously attracted to the center of the excited region by focused plasmonic waves. This difference in trapping behavior is analyzed from the electric field intensity distributions of these two kinds of focused surface waves and the difference in trapping behavior is attributed to photothermal effects due to the light absorption by the gold film.</p>","PeriodicalId":7896,"journal":{"name":"Annalen der Physik","volume":"532 4","pages":""},"PeriodicalIF":2.4,"publicationDate":"2020-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/andp.201900497","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39081862","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Particle localization and hyperuniformity of polymer-grafted nanoparticle materials","authors":"Alexandros Chremos,&nbsp;Jack F. Douglas","doi":"10.1002/andp.201600342","DOIUrl":"10.1002/andp.201600342","url":null,"abstract":"<p>The properties of materials largely reflect the degree and character of the localization of the molecules comprising them so that the study and characterization of particle localization has central significance in both fundamental science and material design. Soft materials are often comprised of deformable molecules and many of their unique properties derive from the distinct nature of particle localization. We study localization in a model material composed of soft particles, hard nanoparticles with grafted layers of polymers, where the molecular characteristics of the grafted layers allow us to “tune” the softness of their interactions. Soft particles are particular interesting because spatial localization can occur such that density fluctuations on large length scales are suppressed, while the material is disordered at intermediate length scales; such materials are called “disordered hyperuniform”. We use molecular dynamics simulation to study a liquid composed of polymer-grafted nanoparticles (GNP), which exhibit a reversible self-assembly into dynamic polymeric GNP structures below a temperature threshold, suggesting a liquid-gel transition. We calculate a number of spatial and temporal correlations and we find a significant suppression of density fluctuations upon cooling at large length scales, making these materials promising for the practical fabrication of “hyperuniform” materials.</p>","PeriodicalId":7896,"journal":{"name":"Annalen der Physik","volume":"529 5","pages":""},"PeriodicalIF":2.4,"publicationDate":"2017-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/andp.201600342","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"35153266","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Minimal spaser threshold within electrodynamic framework: Shape, size and modes","authors":"Nikita Arnold,&nbsp;Calin Hrelescu,&nbsp;Thomas A. Klar","doi":"10.1002/andp.201500318","DOIUrl":"10.1002/andp.201500318","url":null,"abstract":"<p>It is known (yet often ignored) from quantum mechanical or energetic considerations, that the threshold gain of the quasi-static spaser depends only on the dielectric functions of the metal and the gain material. Here, we derive this result from the purely classical electromagnetic scattering framework. This is of great importance, because electrodynamic modelling is far simpler than quantum mechanical one. The influence of the material dispersion and spaser geometry are clearly separated; the latter influences the threshold gain only indirectly, defining the resonant wavelength. We show that the threshold gain has a minimum as a function of wavelength. A variation of nanoparticle shape, composition, or spasing mode may shift the plasmonic resonance to this optimal wavelength, but it cannot overcome the material-imposed minimal gain. Furthermore, retardation is included straightforwardly into our framework; and the global spectral gain minimum persists beyond the quasi-static limit. We illustrate this with two examples of widely used geometries: Silver spheroids and spherical shells embedded in and filled with gain materials.</p>","PeriodicalId":7896,"journal":{"name":"Annalen der Physik","volume":"528 3-4","pages":"295-306"},"PeriodicalIF":2.4,"publicationDate":"2015-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/andp.201500318","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"34464915","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparative analysis of electric field influence on the quantum wells with different boundary conditions.","authors":"Oleg Olendski","doi":"10.1002/andp.201400228","DOIUrl":"10.1002/andp.201400228","url":null,"abstract":"<p>Analytical solutions of the Schrödinger equation for the one-dimensional quantum well with all possible permutations of the Dirichlet and Neumann boundary conditions (BCs) in perpendicular to the interfaces uniform electric field are used for the comparative investigation of their interaction and its influence on the properties of the system. Limiting cases of the weak and strong voltages allow an easy mathematical treatment and its clear physical explanation; in particular, for the small , the perturbation theory derives for all geometries a linear dependence of the polarization on the field with the BC-dependent proportionality coefficient being positive (negative) for the ground (excited) states. Simple two-level approximation elementary explains the negative polarizations as a result of the field-induced destructive interference of the unperturbed modes and shows that in this case the admixture of only the neighboring states plays a dominant role. Different magnitudes of the polarization for different BCs in this regime are explained physically and confirmed numerically. Hellmann-Feynman theorem reveals a fundamental relation between the polarization and the speed of the energy change with the field. It is proved that zero-voltage position entropies are BC independent and for all states but the ground Neumann level (which has ) are equal to while the momentum entropies depend on the edge requirements and the level. Varying electric field changes position and momentum entropies in the opposite directions such that the entropic uncertainty relation is satisfied. Other physical quantities such as the BC-dependent zero-energy and zero-polarization fields are also studied both numerically and analytically. Applications to different branches of physics, such as ocean fluid dynamics and atmospheric and metallic waveguide electrodynamics, are discussed.\u0000\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure>\u0000 </p>","PeriodicalId":7896,"journal":{"name":"Annalen der Physik","volume":"527 3-4","pages":"278-295"},"PeriodicalIF":2.4,"publicationDate":"2015-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/andp.201400228","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"33132574","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparative analysis of electric field influence on the quantum wells with different boundary conditions","authors":"Oleg Olendski","doi":"10.1002/andp.201400229","DOIUrl":"10.1002/andp.201400229","url":null,"abstract":"<p>Thermodynamic properties of the one-dimensional (1D) quantum well (QW) with miscellaneous permutations of the Dirichlet (D) and Neumann (N) boundary conditions (BCs) at its edges in the perpendicular to the surfaces electric field are calculated. For the canonical ensemble, analytical expressions involving theta functions are found for the mean energy and heat capacity for the box with no applied voltage. Pronounced maximum accompanied by the adjacent minimum of the specific heat dependence on the temperature <i>T</i> for the pure Neumann QW and their absence for other BCs are predicted and explained by the structure of the corresponding energy spectrum. Applied field leads to the increase of the heat capacity and formation of the new or modification of the existing extrema what is qualitatively described by the influence of the associated electric potential. A remarkable feature of the Fermi grand canonical ensemble is, at any BC combination in zero fields, a salient maximum of observed on the <i>T</i> axis for one particle and its absence for any other number <i>N</i> of corpuscles. Qualitative and quantitative explanation of this phenomenon employs the analysis of the chemical potential and its temperature dependence for different <i>N</i>. It is proved that critical temperature of the Bose-Einstein (BE) condensation increases with the applied voltage for any number of particles and for any BC permutation except the ND case at small intensities what is explained again by the modification by the field of the interrelated energies. It is shown that even for the temperatures smaller than the total dipole moment may become negative for the quite moderate . For either Fermi or BE system, the influence of the electric field on the heat capacity is shown to be suppressed with <i>N</i> growing. Different asymptotic cases of, e.g., the small and large temperatures and low and high voltages are derived analytically and explained physically. Parallels are drawn to the similar properties of the 1D harmonic oscillator, and similarities and differences between them are discussed.\u0000\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure>\u0000 </p>","PeriodicalId":7896,"journal":{"name":"Annalen der Physik","volume":"527 3-4","pages":"296-310"},"PeriodicalIF":2.4,"publicationDate":"2015-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/andp.201400229","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"33132575","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}