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- Publications
- Influence
Selective Optical Charge Generation, Storage and Readout in a Single Self Assembled Quantum Dot
- D. Heiss, V. Jovanov, M. Cäsar, M. Bichler, G. Abstreiter, J. Finley
- Physics
- 16 December 2008
We report the investigation of a single quantum dot charge storage device. The device allows selective optical charging of a single dot with electrons; storage of these charges over timescales much… Expand
Direct observation of metastable hot trions in an individual quantum dot
- V. Jovanov, S. Kapfinger, G. Abstreiter, J. Finley
- Physics
- 17 October 2011
Magneto photoluminescence and excitation spectroscopy are used to probe the excited state spectrum of negatively charged trions in a InGaAs quantum dot. A single dot optical charging device allows us… Expand
Excited state quantum couplings and optical switching of an artificial molecule
- K. Muller, G. Reithmaier, +6 authors J. Finley
- Physics
- 15 March 2011
We optically probe the spectrum of ground and excited state transitions of an individual, electrically tunable self-assembled quantum dot molecule. Photocurrent absorption measurements show that the… Expand
Observation of an electrically tunable exciton g factor in InGaAs/GaAs quantum dots
- F. Klotz, V. Jovanov, +7 authors J. Finley
- Physics
- 4 February 2010
The electric field dependence of the exciton g factor and the fine structure splitting in self-assembled InGaAs/GaAs quantum dots grown via a flush-overgrowth technique is studied by photocurrent and… Expand
A Charge and Spin Readout Scheme For Single Self-Assembled Quantum Dots
- D. Heiss, V. Jovanov, M. Bichler, G. Abstreiter, J. Finley
- Physics
- 2 April 2008
We propose an all optical spin initialization and readout concept for single self assembled quantum dots and demonstrate its feasibility. Our approach is based on a gateable single dot photodiode… Expand
Observation and explanation of strong electrically tunable exciton g factors in composition engineered In(Ga)As quantum dots
- V. Jovanov, T. Eissfeller, +7 authors J. Finley
- Physics
- 18 April 2011
Strong electrically tunable exciton g factors are observed in individual (Ga)InAs self-assembled quantum dots and the microscopic origin of the effect is explained. Realistic eight-band k · p… Expand
Optically monitoring electron spin relaxation in a single quantum dot using a spin memory device
- D. Heiss, V. Jovanov, +5 authors J. Finley
- Physics
- 16 December 2010
eld applied in Faraday geometry, we show how the spin of the electron can be prepared with a polarization up to 65% simply by controlling the voltage applied to the gate electrode. After generation,… Expand
Highly nonlinear excitonic Zeeman spin splitting in composition-engineered artificial atoms
- V. Jovanov, T. Eissfeller, +8 authors J. J. Finley
- Physics
- 12 December 2011
Non-linear Zeeman splitting of neutral excitons is observed in composition engineerd InxGa1-xAS self-assembled quantum dots and its microscopic origin is explained. Eight-band k . p simulations,… Expand
Asymmetric optical nuclear spin pumping in a single uncharged quantum dot
- F. Klotz, V. Jovanov, +7 authors G. Giedke
- Physics
- 13 July 2010
A highly asymmetric dynamic nuclear spin pumping is observed in a single self assembled InGaAs quantum dot subject to resonant optical pumping of the neutral exciton transition leading to a large… Expand
All optical preparation, storage, and readout of a single spin in an individual quantum dot
- V. Jovanov, F. Klotz, +7 authors J. Finley
- Physics, Engineering
- Photonics West - Optoelectronic Materials and…
- 9 February 2012
We demonstrate optical single electron spin-initialization, -storage and -readout in a single self-assembled InGaAs quantum dot using a spin memory device. Single electron spin relaxation is… Expand