260 citations · 2k across the 31 of their papers we have counts for
14 papers · 1 filter
Nanoscale magnetic field mapping with a single spin scanning probe magnetometer
L. Rondin, J. -P. Tetienne, P. Spinicelli +7
We demonstrate quantitative magnetic field mapping with nanoscale resolution, by applying a lock-in technique on the electron spin resonance frequency of a single nitrogen-vacancy…
Self-induced oscillations in an optomechanical system
Max Ludwig, Clemens Neuenhahn, Constanze Metzger +4
We have explored the nonlinear dynamics of an optomechanical system consisting of an illuminated Fabry-Perot cavity, one of whose end-mirrors is attached to a vibrating cantilever.…
Contrast in transmission spectroscopy of a single quantum dot
B. D. Gerardot, S. Seidl, P. A. Dalgarno +5
We perform transmission spectroscopy on single quantum dots and examine the effects of a resident carriers spin, the incident laser spot size, polarization, and power on the experi…
Manipulating exciton fine-structure in quantum dots with a lateral electric field
B. D. Gerardot, S. Seidl, P. A. Dalgarno +8
The fine structure of the neutral exciton in a single self assembled InGaAs quantum dot is investigated under the effect of a lateral electric field. Stark shifts up to 1.5 meV, an…
Absorption and photoluminescence spectroscopy on a single self-assembled charge-tunable quantum dot
S. Seidl, M. Kroner, P. A. Dalgarno +8
We have performed detailed photoluminescence (PL) and absorption spectroscopy on the same single self-assembled quantum dot in a charge-tunable device. The transition from neutral…
Absorptive and dispersive optical responses of excitons in a single quantum dot
B. Alén, A. Högele, M. Kroner +6
We have determined both the real and imaginary parts of the dielectric polarizability of a single quantum dot. The experiment is based on the observation and the manipulation of Ra…
Low-temperature, in situ tunable, uniaxial stress measurements in semiconductors using a piezoelectric actuator
M. Shayegan, K. Karrai, Y. P. Shkolnikov +3
We demonstrate the use of a piezoelectric actuator to apply, at low temperatures, uniaxial stress in the plane of a two-dimensional electron system confined to a modulation-doped A…
Voltage-controlled electron-hole interaction in a single quantum dot
A. Högele, S. Seidl, M. Kroner +7
The ground state of neutral and negatively charged excitons confined to a single self-assembled InGaAs quantum dot is probed in a direct absorption experiment by high resolution la…
Spin-selective optical absorption of singly charged excitons in a quantum dot
A. Högele, M. Kroner, S. Seidl +8
We investigate high resolution laser absorption spectroscopy of a single InGaAs/GaAs self-assembled quantum dot embedded in a field-effect structure. We show experimentally that th…
Voltage-Controlled Optics of a Quantum Dot
A. Högele, S. Seidl, M. Kroner +4
We show how the optical properties of a single semiconductor quantum dot can be controlled with a small dc voltage applied to a gate electrode. We find that the transmission spectr…
Kondo excitons in self-assembled quantum dots
A. O. Govorov, K. Karrai, R. J. Warburton
We describe novel excitons in quantum dots by allowing for an interaction with a Fermi sea of electrons. We argue that these excitons can be realized very simply with self-assemble…
Polarized excitons in nanorings and the `optical' Aharonov-Bohm effect
A. O. Govorov, S. E. Ulloa, K. Karrai +1
The quantum nature of matter lies in the wave function phases that accumulate while particles move along their trajectories. A prominent example is the Aharonov-Bohm phase, which h…
Excitons in quantum-ring structures in a magnetic field: Optical properties and persistent currents
A. O. Govorov, A. V. Kalameitsev, R. Warburton +2
We study theoretically the magnetic field effect on a neutral, but polarizable exciton confined in quantum-ring structures. For excitons with a nonzero dipole moment, a novel magne…
Magnetoexcitons in quantum-ring structures: a novel magnetic interference effect
S. E. Ulloa, A. O. Govorov, A. V. Kalameitsev +2
A novel magnetic interference effect is proposed for a neutral, but polarizable exciton in a quantum ring with a finite width. The magnetic interference effect originates from the…