中文
相关论文

相关论文: Coherent Random Lasing and "Almost Localized" Phot…

200 篇论文

The ability to enhance light-matter interactions by increasing the energy stored in optical resonators is inherently dependent on their coupling to the incident wavefront. In practice, weak coupling may result from resonators' irregular…

Using a 3D Finite-Difference Time-Domain parallel code, we report on the linear and nonlinear propagation of light pulses in a disordered assembly of scatterers, whose spatial distribution is generated by a Molecular Dynamics code;…

无序系统与神经网络 · 物理学 2007-05-23 Claudio Conti , Luca Angelani , Giancarlo Ruocco

Dielectric spheres of various sizes may sustain electromagnetic whispering-gallery modes resonating at optical frequencies with very narrow linewidths. Arbitrary small deviations from the spherical shape typically shift and broaden such…

光学 · 物理学 2021-08-25 Julius Gohsrich , Tirth Shah , Andrea Aiello

The quasi-bound modes localized on stable periodic ray orbits of dielectric micro-cavities are constructed in the short-wavelength limit using the parabolic equation method. These modes are shown to coexist with irregularly spaced "chaotic"…

光学 · 物理学 2015-06-26 H. E. Tureci , H. G. L. Schwefel , E. E. Narimanov , A. Douglas Stone

In specific motifs of three recurrently connected neurons with probabilistic response, the spontaneous information flux, defined as the mutual information between subsequent states, has been shown to increase by adding ongoing white noise…

神经元与认知 · 定量生物学 2024-08-13 Claus Metzner , Achim Schilling , Andreas Maier , Patrick Krauss

In the context of quantum integrated photonics, this work investigates the quantum properties of light generated by silicon and silicon nitride micro-resonators pumped in pulsed regime. The developed theoretical model, performed in terms of…

Various resonant and near-resonant patterns form in a light-sensitive Belousov-Zhabotinsky (BZ) reaction in response to a spatially-homogeneous time-periodic perturbation with light. The regions (tongues) in the forcing frequency and…

斑图形成与孤子 · 物理学 2009-11-10 Anna L. Lin , Aric Hagberg , Ehud Meron , Harry L. Swinney

Cold atomic clouds constitute highly resonant nonlinear optical media, whose refractive index can be easily tuned via the light frequency. When subjected to a retro-reflected laser beam and under appropriate conditions, the cloud undergoes…

光学 · 物理学 2025-02-12 G. Labeyrie , I. Krešić , R. Kaiser , T. Ackemann

We report a first-principles study of static transport of localized waves in quasi-one-dimensional open media. We found that such transport, dominated by disorder-induced resonant transmissions, displays novel diffusive behavior. Our…

无序系统与神经网络 · 物理学 2015-05-18 Chu-Shun Tian , Sai-Kit Cheung , Zhao-Qing Zhang

We investigate theoretically the generation of nonlinear dissipative structures in optomechanical (OM) systems containing discrete arrays of mechanical resonators. We consider both hybrid models in which the optical system is a continuous…

We study a model which can describe a superconducting single electron transistor (SSET) or a double quantum dot coupled to transmission-line oscillator. In both cases the degree of freedom is given by a charged particle, which couples…

介观与纳米尺度物理 · 物理学 2015-06-03 M. Marthaler , Y. Utsumi , D. S. Golubev

Robustly manipulating waves on subwavelength scales can be achieved by, firstly, designing a structure with a subwavelength band gap and, secondly, introducing a defect so that eigenfrequencies fall within the band gap. Such frequencies are…

偏微分方程分析 · 数学 2021-11-15 Habib Ammari , Bryn Davies , Erik Orvehed Hiltunen

Wave localization is ubiquitous in disordered media -- from amorphous materials, where soft-mode localization is closely related to materials failure, to semi-conductors, where Anderson localization leads to metal-insulator transition. Our…

软凝聚态物质 · 物理学 2020-07-30 Tingtao Zhou , Dimitrios Fraggedakis , Fan Wang

We demonstrate experimentally that structural perturbations imposed on highly-dispersive photonic crystal-based waveguides give rise to spectral features that bear signatures of Anderson localization. Sharp resonances with the effective Qs…

光学 · 物理学 2009-11-13 Juraj Topolancik , Rob Ilic , Frank Vollmer

Diffusion models rely on a high-dimensional latent space of initial noise seeds, yet it remains unclear whether this space contains sufficient structure to predict properties of the generated samples, such as their classes. In this work, we…

机器学习 · 计算机科学 2026-02-09 Wei Wei , Yizhou Zeng , Kuntian Chen , Sophie Langer , Mariia Seleznova , Hung-Hsu Chou

We present experimental evidence for the different mechanisms driving the fluctuations of the local density of states (LDOS) in disordered photonic systems. We establish a clear link between the microscopic structure of the material and the…

无序系统与神经网络 · 物理学 2017-08-02 F. Riboli , F. Uccheddu , G. Monaco , N. Caselli , F. Intonti , M. Gurioli , S. E. Skipetrov

We present a numerical study on the light transport properties which are modulated by the disorder strength in quasi-one-dimensional disordered waveguide which consists of periodically arranged scatterers with random dielectric constant.…

光学 · 物理学 2017-03-22 Yuchen Xu , Hao Zhang , Yujun Lin , Heyuan Zhu

We introduce a simple approach how an electromagnetic environment can be efficiently embedded into state-of-the-art electronic structure methods, taking the form of radiation-reaction forces. We demonstrate that this self-consistently…

量子物理 · 物理学 2022-04-27 Christian Schäfer , Göran Johansson

We present the first calculation of coherent backscattering with inelastic scattering by saturated atoms. We consider the scattering of a quasi-monochromatic laser pulse by two distant atoms in free space. By restricting ourselves to…

量子物理 · 物理学 2009-11-10 T. Wellens , B. Gremaud , D. Delande , C. Miniatura

Topological properties of solid states have sparked considerable recent interest due to their importance in the physics of lattices with a non-trivial basis and their potential in the design of novel materials. Here we describe an…

应用物理 · 物理学 2020-02-19 Henning U. Voss , Douglas J. Ballon