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Charge injection into a molecule on a metallic interface is a key step in many photo-activated reactions. The energy barrier for injection is paralleled with the lowest particle and hole addition energies. We employ Green's function…

Chemical Physics · Physics 2023-08-11 Xiaohe Lei , Annabelle Canestraight , Vojtech Vlcek

We study the emergence and dynamics of pulled fronts described by the Fisher-Kolmogorov-Petrovsky-Piscounov (FKPP) equation in the microscopic reaction-diffusion process A + A <-> A$ on the lattice when only a particle is allowed per site.…

Statistical Mechanics · Physics 2009-11-10 Esteban Moro

We study the response of single nanosized spherical colloids in electrolyte solution to an alternating electric field (AC field) by computer simulations. We use a coarse-grained mesoscopic simulation approach that accounts in full for…

Soft Condensed Matter · Physics 2015-06-04 Jiajia Zhou , Friederike Schmid

Periodically-driven quantum systems can exhibit a plethora of intriguing non-equilibrium phenomena that can be analyzed using Floquet theory. Naturally, Floquet theory is employed to describe the dynamics of atoms interacting with intense…

Quantum Physics · Physics 2024-04-02 Georg Engelhardt , Sayan Choudhury , W. Vincent Liu

A mesoscopic colloid model is developed in which a spherical colloid is represented by many interacting sites on its surface. The hydrodynamic interactions with thermal fluctuations are taken accounts in full using Dissipative Particle…

Soft Condensed Matter · Physics 2014-01-16 Jiajia Zhou , Friederike Schmid

We construct mode-selective effective models describing the interaction of the quantum plasmon-polariton field supported by a finite dielectric medium and one or several quantum emitters. The construction of the effective model is based on…

Quantum Physics · Physics 2026-04-24 Georgii Semin , Hans-Rudolf Jauslin , Gérard Colas des Francs , Stéphane Guérin

Plasmonic resonance of a metallic nanostructure results from coherent motion of its conduction electrons driven by incident light. At the resonance, the induced dipole in the nanostructure is proportional to the number of the conduction…

Materials Science · Physics 2016-04-20 Mingliang Zhang , Hongping Xiang , Xu Zhang , Gang Lu

We examine the limits of applicability of a simple non-Hermitian model for exciton/plasmon interactions in the presence of dissipation and dephasing. The model can be used as an alternative to the more complete Lindblad density matrix…

Quantum Physics · Physics 2020-03-18 Cristian L. Cortes , Matthew Otten , Stephen K. Gray

Preparing and observing quantum states of nanoscale particles is a challenging task with great relevance for quantum technologies and tests of fundamental physics. In contrast to atomic systems with discrete transitions, nanoparticles…

Quantum Physics · Physics 2020-12-23 Lukas Martinetz , Klaus Hornberger , James Millen , M. S. Kim , Benjamin A. Stickler

The spectrum of an exactly solvable non-relativistic system of a charged particle interacting with a quantized electromagnetic mode is studied with various polarizations. Quasiparticle dispersion relations can be derived from the…

Quantum Physics · Physics 2017-06-13 P. Mati

A theoretical scheme for the treatment of an open molecular system with electrons and nuclei is proposed. The idea is based on the Grand Canonical description of a quantum region embedded in a classical reservoir of molecules. Electronic…

Statistical Mechanics · Physics 2018-01-17 Luigi Delle Site

Properties of plasmonic materials are associated with surface plasmons - the electromagnetic excitations coupled to coherent electron charge density oscillations on a metal/dielectric interface. Although decay of such oscillations cannot be…

Optics · Physics 2021-05-27 Krystyna Kolwas

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…

Computational Physics · Physics 2017-06-27 Sanghyeon Yu , Habib Ammari

The response of a quadrupolar nucleus (nuclear spin with I>1/2) to an oscillating radio-frequency (RF) pulse/field is delicately dependent on the ratio of the quadrupolar coupling constant to the amplitude of the pulse in addition to its…

Quantum Physics · Physics 2017-10-25 Vinay Ganapathy , Ramesh Ramachandran

We derive effective Hamiltonians for a single dipolar emitter coupled to a metal nanoparticle (MNP) with particular attention devoted to the role of losses. For small particles sizes, absorption dominates and a non hermitian effective…

Quantum Physics · Physics 2019-02-27 H. Varguet , B. Rousseaux , D. Dzsotjan , H. R. Jauslin , S. Guerin , G. Colas des Francs

Bismuth nanoparticles are being investigated due to their reported photothermal and photocatalytic properties. In this study, we synthesised spherical bismuth nanoparticles (50-600 nm) and investigated their structural and optical…

Optics · Physics 2025-09-23 Michael Foltýn , Michal Kvapil , Tomáš Šikola , Michal Horák

We present the first open access version of the QMeCha (Quantum MeCha) code, a quantum Monte Carlo (QMC) package developed to study many-body interactions between different types of quantum particles, with a modular and easy-to-expand…

We discuss a self-consistent scheme for treating the optical response of large, hybrid networks of semiconducting quantum dots (SQDs) and plasmonic metallic nanoparticles (MNPs). Our method is efficient and scalable and becomes exact in the…

Mesoscale and Nanoscale Physics · Physics 2016-06-15 L. Hayati , C. Lane , B. Barbiellini , A. Bansil , H. Mosallaei

Accessing distinctly quantum aspects of the interaction between light and the position of a mechanical object has been an outstanding challenge to cavity-optomechanical systems. Only cold-atom implementations of cavity optomechanics have…

The quantum mechanical equivalent of parametric resonance is studied. A simple model of a periodically kicked harmonic oscillator is introduced which can be solved exactly. Classically stable and unstable regions in parameter space are…

Quantum Physics · Physics 2009-11-07 Stefan Weigert