567 citations · 1.1k across the 12 of their papers we have counts for
12 papers
Determination of carrier density and dynamics via magneto-electroluminescence spectroscopy in resonant tunneling diodes
E. R. Cardozo de Oliveira, A. Naranjo, A. Pfenning +6
We study the magneto-transport and magneto-electroluminescence properties of purely n-doped GaAs/AlGaAs resonant tunneling diodes with an InGaAs q…
Exciton-polariton topological insulator
S. Klembt, T. H. Harder, O. A. Egorov +9
Topological insulators (TIs) are a striking example of materials in which topological invariants are manifested in robustness against perturbations. Their most prominent feature is…
Electroluminescence on-off ratio control of n-i-n GaAs/AlGaAs-based resonant tunneling structures
E. R. Cardozo de Oliveira, A. Pfenning, E. D. Guarin +7
We explore the nature of the electroluminescence (EL) emission of purely n-doped GaAs/AlGaAs resonant tunneling diodes (RTDs) and the EL evolution with voltage. A singular feature…
Experimental verification of the very strong coupling regime in a GaAs quantum well microcavity
Sebastian Brodbeck, Simone De Liberato, Matthias Amthor +5
When the coupling between light and matter becomes comparable to the energy gap between different excited states they hybridize, leading to the appearance of a rich and complex phe…
Gate-tunable, normally-on to normally-off memristance transition in patterned LaAlO3/SrTiO3 interfaces
Patrick Maier, Fabian Hartmann, Judith Gabel +8
We report gate-tunable memristive switching in patterned LaAlO3/SrTiO3 interfaces at cryogenic temperatures. The application of voltages in the order of a few volts to the back gat…
Bloch-wave engineering of quantum dot-micropillars for cavity quantum electrodynamics experiments
Matthias Lermer, Niels Gregersen, Florian Dunzer +6
We have employed Bloch-wave engineering to realize submicron diameter ultra-high quality factor GaAs/AlAs micropillars (MPs). The design features a tapered cavity in which the fund…
Coherent control and suppressed nuclear feedback of a single quantum dot hole qubit
Kristiaan De Greve, Peter L. McMahon, David Press +8
Future communication and computation technologies that exploit quantum information require robust and well-isolated qubits. Electron spins in III-V semiconductor quantum dots, whil…
Distinguishing photon and polariton lasing from GaAs microcavities by spectral and temporal analysis of the two-threshold behavior
Jean-Sebastian Tempel, Franziska Veit, Marc Aßmann +8
We compare polariton lasing with photon lasing of a planar GaAs/GaAlAs microcavity with zero detuning between the bare cavity mode and the bare exciton mode. For the emission from…
Conditional phase shift from a quantum dot in a pillar microcavity
A. B. Young, R. Oulton, C. Y. Hu +8
Large conditional phase shifts from coupled atom-cavity systems are a key requirement for building a spin photon interface. This in turn would allow the realisation of hybrid quant…
First- and second-order coherence properties of a quantum-dot micropillar laser
Jean-Sebastian Tempel, Ilya A. Akimov, M. Aßmann +7
We present investigations on the coherence of the emission from the polarization split fundamental mode of an AlGaInAs/GaAs quantum-dot microcavity laser. Using polarization insens…
Nonlinear photoluminescence spectra from a quantum dot-cavity system: Direct evidence of pump-induced stimulated emission and anharmonic cavity-QED
P. Yao, P. K. Pathak, E. Illes +9
We investigate the power-dependent photoluminescence spectra from a strongly coupled quantum dot-cavity system using a quantum master equation technique that accounts for incoheren…
Universal and reconfigurable logic gates in a noise-triggered artificial neuron node
L. Worschech, F. Hartmann, A. Forchel +3
Submicron-sized mesas of resonant tunneling diodes (RTDs) with split drain contacts have been realized and the current-voltage characteristics have been studied in the bistable reg…