455 citations · 1.3k across the 11 of their papers we have counts for
11 papers
Nanoimprint strain-engineering of 2D semiconductors
Jannis Bensmann, Robert Schmidt, Robert Schneider +5
Mechanical strain is a powerful tool to tune the optical and optoelectronic properties of atomically thin semiconductors. Inhomogeneous strain plays an important role in exciton fu…
Phonon-assisted emission and absorption of individual color centers in hexagonal boron nitride
Daniel Wigger, Robert Schmidt, Osvaldo Del Pozo-Zamudio +10
Defect centers in hexagonal boron nitride represent room-temperature single-photon sources in a layered van der Waals material. These light emitters appear with a wide range of tra…
Gap plasmonics of silver nanocube dimers
Dario Knebl, Anton Hörl, Andreas Trügler +4
We theoretically investigate gap plasmons for two silver nanocubes coupled through a molecular tunnel junction. In absence of tunneling, the red-shift of the bonding mode saturates…
Electrically-driven optical antennas
Johannes Kern, René Kullock, Jord C. Prangsma +3
Unlike radiowave antennas, optical nanoantennas so far cannot be fed by electrical generators. Instead, they are driven by light or via optically active materials in their proximit…
Tunneling Hamiltonian
Johannes Kern
For the description of the transport of electrons across a quantum dot, which is tunnel coupled to leads at different chemical potentials, it is usual to assume that the total Hami…
A perturbation theory for the Anderson model
Johannes Kern
Within the diagrammatic real time approach \cite{König96, Schoeller97}, the current across a quantum dot which is tunnel coupled to two leads at different chemical potentials is ca…
Transport across an Anderson quantum dot in the intermediate coupling regime
Johannes Kern, Milena Grifoni
We describe linear and nonlinear transport across a single impurity Anderson model quantum dot with intermediate coupling to the leads, i.e., with tunnel coupling of the order of t…
Atomic-scale confinement of optical fields
Johannes Kern, Swen Grossmann, Nadezda V. Tarakina +7
In the presence of matter there is no fundamental limit preventing confinement of visible light even down to atomic scales. Achieving such confinement and the corresponding intensi…
Dynamics of four-photon photoluminescence in gold nanoantennas
P. Biagioni, D. Brida, J. -S. Huang +5
Two-pulse correlation is employed to investigate the temporal dynamics of both two-photon photoluminescence (2PPL) and four-photon photoluminescence (4PPL) in resonant and nonreson…
Atomically flat single-crystalline gold nanostructures for plasmonic nanocircuitry
Jer-Shing Huang, Victor Callegari, Peter Geisler +12
Deep subwavelength integration of high-definition plasmonic nanostructures is of key importance for the development of future optical nanocircuitry for high-speed communication, qu…
Mode imaging and selection in strongly coupled nanoantennas
Jer-Shing Huang, Johannes Kern, Peter Geisler +5
The number of eigenmodes in plasmonic nanostructures increases with complexity due to mode hybridization, raising the need for efficient mode characterization and selection. Here w…