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We demonstrate high contrast quantum interference between one-photon and three-photon absorption pathways in an organic solid at room temperature. Illumination of a thin polymer film activated with fluorescing dendrimer chromophores of large three photon absorption cross section with two simultaneous femtosecond pulses at near-IR frequency. and its third harmonic UV frequency 3. results in a spati

InP quantum dots grown on GaInP by the Stranski-Krastanow technique are less well studied than InAs quantum dots grown on GaAs. We here give a review of the main experimental evidence for the InP dots being charged when grown in between n-type barriers.

In this thesis, we investigate many–body systems using simulations of quan- tum computers. Quantum computing is a computational paradigm based on qubits which are defined in a Hilbert space instead of the familiar binary bits. This architecture implies that quantum computers are especially suited to simulate quantum systems that are otherwise difficult to compute. In this work, the excitation and

In order to fully utilize the technological potential of unconventional superconductors, an enhanced understanding of the superconducting mechanism is necessary. In the best performing superconductors, the cuprates, superconductivity is intimately linked with magnetism, although the details of this coupling remain elusive. Here, we address this gap by studying the electron-doped cuprate Nd1.85Ce0.

The role of hybridization in evolution has been debated for more than a century regarding bryophytes (mosses, liverworts, and hornworts) as well as most other organisms. Bryophytes have haplodiplontic life cycles with a dominant haploid generation. Hybridization in bryophytes involves fusion of gametes produced by haploid parental gametophytes of different species. The hybrid is thus the short-liv

Recently, Attaccalite et al. proposed a new expression for the exchange-correlation energy of the two-dimensional electron gas, based on quantum Monte Carlo calculations. We compare this functional with the established expression given by Tanatar and Ceperley for use in density functional calculations. As model systems serve a circular few-electron quantum dot and a square lattice of dots. For sin

Rare-earth ions in dielectric crystals are interesting candidates for storing quantum states of photons. A limiting factor on the optical density and thus the conversion efficiency is the distortion introduced in the crystal by doping elements of one type into a crystal matrix of another type. Here we investigate the system Pr3+:La-2(WO4)(3), where the similarity of the ionic radii of Pr and La mi

Resonant photoelectron spectroscopy (RPES) has been used to probe electronic structure properties of the closed-shell [FeII(CN)6]4− and open-shell [FeIII(CN)6]3− prototype transition metal complexes in aqueous solution. Site-selective Fe 2p (L-edge) RPES mapsprovide new insight into spin-coupling processes at the core-excited metal centers, with autoionization of [FeIII(CN)6]3− showing a dramatic

In the Mesoscopic Physics Group, we are working towards a better understanding of nanoscale systems, where phase coherence meets fluctuations. Our goal thereby is to accelerate and contribute to the development of quantum technologies which make use of intriguing quantum features such as coherence and entanglement. Read more about our research here. Members Peter Samuelsson, Group Leader Morten Mu

https://www.nano.lu.se/mesoscopic-physics-group - 2026-09-11

Part of the Sound Studies Lecture Series NIKOLAOS GEORGIOS VARDAXIS Acoustics refers to the science of sound, its properties and propagation, while the same term is often used to refer to sound qualities of an environment, an indoor space or somewhere outdoors. This lecture offers an introduction to basic acoustic concepts such as sound pressure levels, which is the most essential quantity when de

https://www.lmc.lu.se/aktiviteter/aktiviteter-2020/introduction-acoustic-concepts-relevant-sound-studies - 2026-09-11

SUMMARY: 1. Introduction. – 2. Local Self-government in the Swedish Constitution. – 3. The Legal Role and Activities of Local Government. – 4. Legal Supervision ofLocal Government. – 5. Swedish Local Government and the EU.

An essential ingredient in many model Hamiltonians, such as the Hubbard model, is the effective electron-electron interaction U, which enters as matrix elements in some localized basis. These matrix elements provide the necessary information in the model, but the localized basis is incomplete for describing U. We present a systematic scheme for computing the manifestly basis-independent dynamical

Electrical quantum conductors coupled to microwave resonators have in the last decade emerged as a versatile test bed for controllable light-matter interaction on the nanometer scale. Recent experimental progress with high-impedance resonators has resulted in conductor-resonator systems with a large, dimensionless coupling parameter λ 0.1, well beyond the small-coupling regime, λ1 Motivated by thi