134 citations · 421 across the 9 of their papers we have counts for
9 papers
Coexistence of weak and strong coupling with a quantum dot in a photonic molecule
S. Lichtmannecker, M. Kaniber, S. Echeverri-Arteaga +12
We study the emission from a molecular photonic cavity formed by two proximal photonic crystal defect cavities containing a small number (<3) of In(Ga)As quantum dots. Under strong…
Quantum Fingerprints in Higher Order Correlators of a Spin Qubit
Alexander Bechtold, Fuxiang Li, Kai Müller +4
The spin of an electron in a semiconductor quantum dot represents a natural nanoscale solid state qubit. Coupling to nuclear spins leads to decoherence that limits the number of al…
Non-linear two-photon resonance fluorescence on a single artificial atom
P. -L. Ardelt, M. Koller, T. Simmet +7
We report two-photon resonance fluorescence of an individual semiconductor artificial atom. By non-linearly driving a single quantum dot via a two-photon transition, we probe the l…
Coulomb mediated hybridization of excitons in artificial molecules
P. -L. Ardelt, K. Gawarecki, K. Müller +11
We report the Coulomb mediated hybridization of excitonic states in an optically active, artificial quantum dot molecule. By probing the optical response of the artificial molecule…
Controlled tunneling induced dephasing of Rabi rotations for ultra-high fidelity hole spin initialization
P. L. Ardelt, T. Simmet, K. Müller +6
We report the sub-picosecond initialization of a single heavy hole spin in a self-assembled quantum dot with >98.5 % fidelity and without external magnetic field. Using an opticall…
Three stage decoherence dynamics of electron spin qubits in an optically active quantum dot
A. Bechtold, D. Rauch, F. Li +6
The control of discrete quantum states in solids and their use for quantum information processing is complicated by the lack of a detailed understanding of the mechanisms responsib…
Dissipative preparation of the exciton and biexciton in a self-assembled quantum dot on picosecond timescales
Per-Lennart Ardelt, Lukas Hanschke, Kevin A. Fischer +9
Pulsed resonant fluorescence is used to probe ultrafast phonon-assisted exciton and biexciton preparation in individual self-assembled InGaAs quantum dots. By driving the system us…
Interplay of fractional quantum Hall states and localization in quantum point contacts
S. Baer, C. Rössler, E. C. de Wiljes +5
We investigate integer and fractional quantum Hall states in quantum point contacts (QPCs) of different geometries, defined in AlGaAs/GaAs heterostructures employing different dopi…
Transport Properties of Clean Quantum Point Contacts
C. Rössler, S. Baer, E. de Wiljes +5
Quantum point contacts are fundamental building blocks for mesoscopic transport experiments and play an important role in recent interference- and fractional quantum Hall experimen…