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- Technical University of DenmarkDK27 papers
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5 papers · 1 filter
Quantitative analysis of quantum dot dynamics and emission spectra in cavity quantum electrodynamics
K. H. Madsen, P. Lodahl
We present detuning-dependent spectral and decay-rate measurements to study the difference between spectral and dynamical properties of single quantum dots embedded in micropillar…
Nonequilibrium electron-vibration coupling and conductance fluctuations in a C60-junction
Søren Ulstrup, Thomas Frederiksen, Mads Brandbyge
We investigate chemical bond formation and conductance in a molecular C60-junction under finite bias voltage using first-principles calculations based on density functional theory…
Current-induced atomic dynamics, instabilities, and Raman signals: Quasi-classical Langevin equation approach
Jing Tao Lü, Mads Brandbyge, Per Hedegård +2
We derive and employ a semi-classical Langevin equation obtained from path-integrals to describe the ionic dynamics of a molecular junction in the presence of electrical current. T…
First principles structures and circular dichroism spectra for the close-packed and the 7/2 motif of collagen
Karl J. Jalkanen, Kasper Olsen, Michaela Knapp-Mohammady +1
The recently proposed close-packed motif for collagen is investigated using first principles semi-empirical wave function theory and Kohn-Sham density functional theory. Under thes…
Plasmonic modulator based on gain-assisted metal-semiconductor-metal waveguide
Viktoriia E. Babicheva, Irina V. Kulkova, Radu Malureanu +2
We investigate plasmonic modulators with a gain material to be implemented as ultra-compact and ultra-fast active nanodevices in photonic integrated circuits. We analyze metal-semi…