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13 papers · 2 filters
Electron dynamics in a 2D nanobubble: A two-level system based on spatial density
Roberto Rosati, Frank Lengers, Christian Carmesin +5
Nanobubbles formed in monolayers of transition metal dichalcogenides (TMDCs) on top of a substrate feature localized potentials, in which electrons can be captured. We show that th…
Evidence for spin current driven Bose-Einstein condensation of magnons
B. Divinskiy, H. Merbouche, V. E. Demidov +9
The quanta of magnetic excitations - magnons - are known for their unique ability to undergo Bose-Einstein condensation at room temperature. This fascinating phenomenon reveals its…
Comparison of the semiclassical and quantum optical field dynamics in a pulse-excited optical cavity with a finite number of quantum emitters
K. Jürgens, F. Lengers, D. Groll +3
The spectral and temporal response of a set of quantum emitters embedded in a photonic cavity is studied. Quantum mechanically, such systems can be described by the Tavis-Cummi…
Optical dipole orientation of interlayer excitons in MoSe-WSe heterostacks
Lukas Sigl, Mirco Troue, Manuel Katzer +10
We report on the far-field photoluminescence intensity distribution of interlayer excitons in MoSe-WSe heterostacks as measured by back focal plane imaging in the tempe…
Destructive photon echo formation in six-wave mixing signals of a MoSe monolayer
Thilo Hahn, Diana Vaclavkova, Miroslav Bartos +8
Monolayers of transition metal dichalcogenides display a strong excitonic optical response. Additionally encapsulating the monolayer with hexagonal boron nitride allows to reach th…
Phonon signatures in spectra of exciton polaritons in transition metal dichalcogenides
Frank Lengers, Tilmann Kuhn, Doris E. Reiter
Embedding a monolayer of a transition metal dichalcogenide in a high-Q optical cavity results in the formation of distinct exciton polariton modes. The polaritons are affected by t…