Zobrazeno 1 - 10
of 854
pro vyhledávání: '"Knorr, Andreas"'
We study the dynamical light emission from few-photon Fock states in waveguide-QED with a chiral two-level system. We first investigate the time dynamics of the system by calculating the emitter population and illustrate the breakdown of the weak exc
Externí odkaz:
http://arxiv.org/abs/2410.03715
We present a detailed quantum theory and simulations of a few-photon Fock state pulse interacting with a two-level system (TLS) in a waveguide. For a rectangular pulse shape, we present an exact temporal scattering theory for the waveguide-QED system
Externí odkaz:
http://arxiv.org/abs/2410.03716
Autor:
Mittenzwey, Henry, Kumar, Abhijeet, Dhingra, Raghav, Watanabe, Kenji, Taniguchi, Takashi, Gahl, Cornelius, Bolotin, Kirill I., Selig, Malte, Knorr, Andreas
We investigate spin relaxation dynamics of interlayer excitons in a MoSe2/MoS2 heterostructure induced by the Rashba effect. In such a system, Rashba interactions arise from an out-of-plane electric field due to photo-generated interlayer excitons in
Externí odkaz:
http://arxiv.org/abs/2406.04454
Multi-physics simulations play a crucial role in understanding complex systems. However, their computational demands are often prohibitive due to high dimensionality and complex interactions, such that actual calculations often rely on approximations
Externí odkaz:
http://arxiv.org/abs/2402.16433
Autor:
Meinecke, Stefan, Köster, Felix, Christiansen, Dominik, Lüdge, Kathy, Knorr, Andreas, Selig, Malte
Publikováno v:
Phys. Rev. B 107, 184306 (2023)
We present a data-driven approach to efficiently approximate nonlinear transient dynamics in solid-state systems. Our proposed machine-learning model combines a dimensionality reduction stage with a nonlinear vector autoregression scheme. We report a
Externí odkaz:
http://arxiv.org/abs/2402.13685
Excitons are compound particles formed from an electron and a hole in semiconductors. The impact of this substructure on the phonon-exciton interaction is described by a closed system of microscopic scattering equations. To calculate the actual excit
Externí odkaz:
http://arxiv.org/abs/2310.00721
Autor:
Greten, Lara, Salzwedel, Robert, Göde, Tobias, Greten, David, Reich, Stephanie, Hughes, Stephen, Selig, Malte, Knorr, Andreas
Monolayers of transition metal dichalcogenides (TMDC) are direct-gap semiconductors with strong light-matter interactions featuring tightly bound excitons, while plasmonic crystals (PCs), consisting of metal nanoparticles that act as meta-atoms, exhi
Externí odkaz:
http://arxiv.org/abs/2309.09673
Autor:
von Helversen, Martin, Greten, Lara, Limame, Imad, Shih, Chin-Wen, Schlaugat, Paul, Antón-Solanas, Carlos, Schneider, Christian, Rosa1, Bárbara, Knorr, Andreas, Reitzenstein, Stephan
In recent years, much research has been undertaken to investigate the suitability of two-dimensional materials to act as single-photon sources with high optical and quantum optical quality. Amongst them, transition-metal dichalcogenides, especially W
Externí odkaz:
http://arxiv.org/abs/2307.07282
Spatial Exciton Localization at Interfaces of Metal Nanoparticles and Atomically Thin Semiconductors
Autor:
Salzwedel, Robert, Greten, Lara, Schmidt, Stefan, Hughes, Stephen, Knorr, Andreas, Selig, Malte
We present a self-consistent Maxwell-Bloch theory to analytically study the interaction between a nanostructure consisting of a metal nanoparticle and a monolayer of transition metal dichalcogenide. For the combined system, we identify an effective e
Externí odkaz:
http://arxiv.org/abs/2305.11099
Autor:
Policht, Veronica R., Mittenzwey, Henry, Dogadov, Oleg, Katzer, Manuel, Villa, Andrea, Li, Qiuyang, Kaiser, Benjamin, Ross, Aaron M., Scotognella, Francesco, Zhu, Xiaoyang, Knorr, Andreas, Selig, Malte, Cerullo, Giulio, Conte, Stefano Dal
Vertical heterostructures (HS) of transition metal dichalcogenides (TMDs) host interlayer excitons (ILX), with electrons and holes residing in different layers. With respect to their intralayer counterparts, ILX feature much longer lifetimes and diff
Externí odkaz:
http://arxiv.org/abs/2304.03707