827 citations · 1.5k across the 38 of their papers we have counts for
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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…
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…
Quantum Zeno Manipulation of Quantum Dots
N. Ahmadiniaz, M. Geller, J. König +4
We investigate whether and how the quantum Zeno effect, i.e., the inhibition of quantum evolution by frequent measurements, can be employed to isolate a quantum dot from its surrou…
Auger and spin dynamics in a self-assembled quantum dot
Hendrik Mannel, Jens Kerski, Pia Lochner +5
The Zeeman-split spin states of a single quantum dot can be used together with its optical trion transitions to form a spin-photon interface between a stationary (the spin) and a f…
Internal Photo Effect from a Single Quantum Emitter
Pia Lochner, Jens Kerski, Annika Kurzmann +4
We demonstrate by time-resolved resonance fluorescence measurements on a single self-assembled quantum dot an internal photo-effect that emits electrons from the dot by an intra-ba…
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…
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…
Analog Sauter-Schwinger effect in semiconductors for spacetime-dependent fields
Malte F. Linder, Axel Lorke, Ralf Schützhold
The Sauter-Schwinger effect predicts the creation of electron-positron pairs out of the quantum vacuum via tunneling induced by a strong electric field. Unfortunately, as the requi…
Edge magnetotransport in graphene: A combined analytical and numerical study
Thomas Stegmann, Axel Lorke
The current flow along the boundary of graphene stripes in a perpendicular magnetic field is studied theoretically by the nonequilibrium Green's function method. In the case of spe…
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…
Magnetotransport along a boundary: From coherent electron focusing to edge channel transport
Thomas Stegmann, Dietrich E. Wolf, Axel Lorke
We study theoretically how electrons, coherently injected at one point on the boundary of a two-dimensional electron system, are focused by a perpendicular magnetic field onto…
Edge induced magneto plasmon excitation in a two-dimensional electron gas under quantum Hall conditions
Christian Notthoff, Dirk Reuter, Andreas Wieck +1
The spectrally resolved Terahertz photoconductivity between two separately contacted edge-channels of a two-dimensional electron gas in the quantum Hall regime is investigated. We…
Terahertz photoresponse of a quantum Hall edge-channel diode
Christian Notthoff, Kevin Rachor, Detlef Heitmann +1
The Teraherz (THz) photoresponse of a two-dimensional electron gas in the quantum Hall regime is investigated. We use a sample structure which is topologically equivalent to a Corb…
Interference effects in transport across a single incompressible strip at the edge of the fractional quantum Hall system
E. V. Deviatov, B. Marquardt, A. Lorke +2
We experimentally investigate interference effects in transport across a single incompressible strip at the edge of the quantum Hall system by using a Fabry-Perot type interferomet…
Separately contacted edge states at high imbalance in the integer and fractional quantum Hall effect regime
E. V. Deviatov, A. Lorke
This review presents experimental results on the inter-edge-state transport in the quantum Hall effect, mostly obtained in the regime of high imbalance. The application of a specia…
Experimental realization of a Fabry-Perot-type interferometer by co-propagating edge states in the quantum Hall regime
E. V. Deviatov, A. Lorke
A Fabry-Perot-type interferometer is experimentally realized for electrons in a semiconductor device. A special experimental geometry creates interference conditions for co-propaga…
Manifestation of a complex edge excitation structure in the fractional quantum Hall regime at high filling factors
E. V. Deviatov, A. Lorke, W. Wegscheider
We experimentally study equilibration across the sample edge at high fractional filling factors 4/3, 5/3 under experimental conditions, which allow us to obtain high imbalance cond…
Evidence for the Luttigger liquid density of states in transport across the incompressible stripe at fractional filling factors
E. V. Deviatov, A. A. Kapustin, V. T. Dolgopolov +3
We experimentally investigate transport across the incompressible stripe at the sample edge in the fractional quantum Hall effect regime at bulk filling factors and …
Experimental investigation of the edge states structure at fractional filling factors
E. V. Deviatov, V. T. Dolgopolov, A. Lorke +2
We experimentally study electron transport between edge states in the fractional quantum Hall effect regime. We find an anomalous increase of the transport across the 2/3 incompres…
Topological defects in the edge state structure in a bilayer electron system
E. V. Deviatov, V. T. Dolgopolov, A. Wurtz +5
We experimentally demonstrate, for the first time, formation of point-like topological defects in the edge state structure in the quantum Hall effect regime. By using of a selectiv…