106 citations · 391 across the 17 of their papers we have counts for
17 papers · 1 filter
Observation of correlations beyond the single-particle picture in fermionic counting statistics
Johann Zöllner, Hendrik Mannel, Daniel Oppers +3
The analysis of charge fluctuations in a mesoscopic device can shed light on the fundamental question of whether or not a single-particle picture of electron transport is appropria…
The interplay between electron tunneling and Auger emission in a single quantum emitter weakly coupled to an electron reservoir
Marcel Zöllner, Hendrik Mannel, Fabio Rimek +6
In quantum dots (QDs) the Auger recombination is a non-radiative scattering process in which the optical transition energy of a charged exciton (trion) is transferred to an additio…
Gas dependent hysteresis in MoS field effect transistors
F. Urban, F. Giubileo, A. Grillo +10
We study the effect of electric stress, gas pressure and gas type on the hysteresis in the transfer characteristics of monolayer molybdenum disulfide (MoS2) field effect transistor…
Unraveling spin dynamics from charge fluctuations
Eric Kleinherbers, Hendrik Mannel, Jens Kerski +3
The use of single electron spins in quantum dots as qubits requires detailed knowledge about the processes involved in their initialization and operation as well as their relaxatio…
Post-processing of real-time quantum event measurements for an optimal bandwidth
Jens Kerski, Hendrik Mannel, Pia Lochner +7
Single electron tunneling and its transport statistics have been studied for some time using high precision charge detectors. However, this type of detection requires advanced lith…
Pushing the limits in real-time measurements of quantum dynamics
Eric Kleinherbers, Philipp Stegmann, Annika Kurzmann +3
Time-resolved studies of quantum systems are the key to understand quantum dynamics at its core. The real-time measurement of individual quantum numbers as they switch between cert…
Real-time detection of every Auger recombination in a self-assembled quantum dot
Pia Lochner, Annika Kurzmann, Jens Kerski +6
Auger recombination is a non-radiative process, where the recombination energy of an electron-hole pair is transferred to a third charge carrier. It is a common effect in colloidal…
Optical detection of single electron transport dynamics
A. Kurzmann, P. Stegmann, J. Kerski +6
The unpredictability of a single quantum event lies at the very core of quantum mechanics. Physical information is therefore drawn from a statistical evaluation of many such proces…
Photon noise suppression by a built-in feedback loop
A. Al-Ashouri, A. Kurzmann, B. Merkel +4
Visionary quantum photonic networks need transform-limited single photons on demand. Resonance fluorescence on a quantum dot provides the access to a solid-state single photon sour…
A charge-driven feedback loop in the resonance fluorescence of a single quantum dot
B. Merkel, A. Kurzmann, J. -H. Schulze +3
Semiconductor quantum dots can emit antibunched, single photons on demand with narrow linewidths. However, the observed linewidths are broader than lifetime measurements predict, d…
Photoelectron generation and capture in the resonance fluorescence of a quantum dot
Annika Kurzmann, Arne Ludwig, Andreas D. Wieck +2
Time-resolved resonance fluorescence (RF) on a single self-assembled quantum dot (QD) is used to analyze the generation and capture of photoinduced free charge carriers. We directl…
Auger recombination in self-assembled quantum dots: Quenching and broadening of the charged exciton transition
Annika Kurzmann, Arne Ludwig, Andreas D. Wieck +2
In quantum dots (QDs) the Auger recombination is a non-radiative process, where the electron-hole recombination energy is transferred to an additional carrier. It has been studied…
Giant magneto-photoelectric effect in suspended graphene
Jens Sonntag, Annika Kurzmann, Martin Geller +3
We study the optical response of a suspended graphene field-effect transistor in magnetic fields of up to 9 T (quantum Hall regime). With an illumination power of only 3 μW, we mea…
Asymmetry of charge relaxation times in quantum dots: The influence of degeneracy
Andreas Beckel, Annika Kurzmann, Martin Geller +4
Using time-resolved transconductance spectroscopy, we study the tunneling dynamics between a two-dimensional electron gas (2DEG) and self-assembled quantum dots (QDs), embedded in…
The role of the ligand layer for photoluminescence spectral diffusion of CdSe/ZnS nanoparticles
Daniel Braam, Andreas Mölleken, Günther M. Prinz +3
The time-resolved photoluminescence (PL) characteristics of single CdSe/ZnS nanoparticles, embedded in a PMMA layer is studied at room temperature. We observe a strong spectral jit…
Non-equilibrium many-particle spin states in self-assembled quantum dot hydrogen, helium and lithium
B. Marquardt, M. Geller, B. Baxevanis +4
We introduce an all-electrical measurement technique, which makes it possible to prepare and detect the ground and excited many-particle states in self-assembled InAs QDs at 4K. Th…
Transverse rectification in density-modulated two-dimensional electron gases
A. Ganczarczyk, S. Rojek, A. Quindeau +7
We demonstrate tunable transverse rectification in a density-modulated two-dimensional electron gas (2DEG). The density modulation is induced by two surface gates, running in paral…