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The ground states of some nuclei are described by densities and mean fields that are spherical, while others are deformed. The existence of non-spherical shape in nuclei represents a spontaneous symmetry breaking.

核理论 · 物理学 2012-05-23 Ikuko Hamamoto , Ben R. Mottelson

The interpretation of nanoplasmonic effects on molecular properties, such as metal-enhanced absorption or fluorescence, typically assumes a fully coherent picture (in the quantum-mechanical sense) of the phenomena. Yet, there may be…

化学物理 · 物理学 2019-07-29 Emanuele Coccia , Stefano Corni

We investigate light scattering by coated spheres composed of a dispersive plasmonic core and a dielectric shell. By writing the absorption cross-section in terms of the internal electromagnetic fields, we demonstrate it is an observable…

光学 · 物理学 2015-06-15 Tiago J. Arruda , Alexandre S. Martinez , Felipe A. Pinheiro

In this paper, we follow our presented model in J. Opt. Soc. Am. B {\bf 30}, 1109--1117 (2013), in which the interaction between a $\Lambda$-type three-level atom and a quantized two-mode radiation field in a cavity in the presence of…

量子物理 · 物理学 2014-07-29 M J Faghihi , M K Tavassoly

We describe a new mechanism of decoherence in excited atoms as a result of thermal particles scattering by the atomic nucleus. It is based on the idea that a single scattering will produce a sudden displacement of the nucleus, which will be…

量子物理 · 物理学 2017-06-13 Diego A. Quiñones , Benjamin Varcoe

Surface structure affects the growth, shape and properties of nanoparticles. In wet chemical syntheses, metal additives and surfactants are used to modify surfaces and guide nanocrystal growth. To understand this process, it is critical to…

The optical response of metal nanoparticles is governed by plasmonic resonances, which are dictated by the particle morphology. A thorough understanding of the link between morphology and optical response requires quantitatively measuring…

Atoms interact with each other through the electromagnetic field, creating collective states that can radiate faster or slower than a single atom, i.e. super- and sub-radiance. The generation and control of such states by engineering the…

We investigate how the near-field enhancement of self-similar nanolenses, made of three plasmonic nanospheres with decreasing sizes and separations, is affected by quantum corrections in the optical response of the metal, and by fabrication…

介观与纳米尺度物理 · 物理学 2025-02-21 Nikolaos Kyvelos , N. Asger Mortensen , Xuezhi Zheng , Christos Tserkezis

The previously derived vortex atomic form factor, which is directly related to a differential reaction cross section, is used to analyze the elastic scattering of twisted vortex photons with a hydrogenic atomic target. The vortex atomic…

量子物理 · 物理学 2019-09-18 Jack Gallahan

We study spatial coherence properties of a system composed of periodic silver nanoparticle arrays covered with a fluorescent organic molecule (DiD) film. The evolution of spatial coherence of this composite structure from the weak to the…

光学 · 物理学 2014-04-17 L. Shi , T. K. Hakala , H. T. Rekola , J. -P. Martikainen , R. J. Moerland , P. Törmä

As characteristic lengths in plasmonics rapidly approach the sub-nm regime, quantum-informed models that can capture those aspects of the quantum nature of the electron gas that are not accessible by the standard approximations of classical…

介观与纳米尺度物理 · 物理学 2018-12-20 Christos Tserkezis , A. T. Mina Yeşilyurt , Jer-Shing Huang , N. Asger Mortensen

Nanodiamonds containing luminescent point defects are widely explored for applications in quantum bio-sensing such as nanoscale magnetometry, thermometry, and electrometry. A key challenge in the development of such applications is a large…

光学 · 物理学 2023-02-08 Qiang Sun , Shuo Li , Taras Plakhotnik , Andrew D. Greentree

The optical resonances supported by nanostructures offer the possibility to enhance the interaction between matter and the quantum states of light. In this work, we provide a framework to study the scattering of quantum states of light with…

We study the photonic interactions between two distant atoms which are coupled by an optical element (a lens or an optical fiber) focussing part of their emitted radiation onto each other. Two regimes are distinguished depending on the…

量子物理 · 物理学 2008-07-15 Stefan Rist , Jürgen Eschner , Markus Hennrich , Giovanna Morigi

Surface waves on a metal nanosphere are described in terms of quantum electrodynamics. The interaction of surface waves with a quantum oscillator is discussed in the dipole approximation. The increase in the spontaneous emission rate of the…

光学 · 物理学 2013-01-23 A. M. Leontovich , V. V. Lidsky

The article reviews recent progress in the theoretical understanding of near-field surface electromagnetic phenomena in pristine and atomically doped carbon nanotubes. The phenomena involving strong coupling effects are outlined. They are…

介观与纳米尺度物理 · 物理学 2010-11-01 I. V. Bondarev

Plasmonic nanopatch antennas that incorporate dielectric gaps hundreds of picometers to several nanometers thick have drawn increasing attention over the past decade because they confine electromagnetic fields to grossly sub-diffraction…

When metallic (or plasmonic) nanospheres are nearly touching, strong concentration of light can occur in the narrow gap regions. This phenomenon has a potential application in nanophotonics, biosensing and spectroscopy. The understanding of…

计算物理 · 物理学 2017-06-27 Sanghyeon Yu , Habib Ammari

We explore the physical properties of a unified microscopic theory for the coexistence of superconductivity and charge density waves in two-dimensional transition metal dichalcogenides. In the case of particle-hole symmetry the elementary…

超导电性 · 物理学 2009-11-10 B. Uchoa , G. G. Cabrera , A. H. Castro Neto