Publications (9)
Inference of -particle density profiles from ITER collective Thomson scattering
Jesper Rasmussen, Morten Stejner, Thomas Jensen +6
The primary purpose of the collective Thomson scattering (CTS) diagnostic at ITER is to measure the properties of fast-ion populations, in particular those of fusion-born -part…
Photon echoes retrieved from semiconductor spins: access to basis for long-term optical memories
L. Langer, S. V. Poltavtsev, I. A. Yugova +6
The possibility to store optical information is important for classical and quantum communication. Atoms or ions as well as color centers in crystals offer suitable two-level syste…
Long-range p-d exchange interaction in a ferromagnet-semiconductor Co/CdMgTe/CdTe quantum well hybrid structure
I. A. Akimov, M. Salewski, I. V. Kalitukha +14
The exchange interaction between magnetic ions and charge carriers in semiconductors is considered as prime tool for spin control. Here, we solve a long-standing problem by uniquel…
High resolution two-dimensional optical spectroscopy of electron spins
M. Salewski, S. V. Poltavtsev, I. A. Yugova +7
Multidimensional coherent optical spectroscopy is one of the most powerful tools for investigating complex quantum mechanical systems. While it was conceived decades ago in magneti…
Photon echoes from (In,Ga)As quantum dots embedded in a Tamm-plasmon microcavity
M. Salewski, S. V. Poltavtsev, Yu. V. Kapitonov +9
We report on the coherent optical response from an ensemble of (In,Ga)As quantum dots (QDs) embedded in a planar Tamm-plasmon microcavity with a quality factor of approx. 100. Sign…
Microscopic dynamics of electron hopping in a semiconductor quantum well probed by spin-dependent photon echoes
A. N. Kosarev, S. V. Poltavtsev, L. E. Golub +10
Spin-dependent photon echoes in combination with pump-probe Kerr rotation are used to study the microscopic electron spin transport in a CdTe/(Cd,Mg)Te quantum well in the hopping…
Long-range p-d exchange interaction in a ferromagnet-semiconductor hybrid structure
V. L. Korenev, M. Salewski, I. A. Akimov +14
Hybrid structures synthesized from different materials have attracted considerable attention because they may allow not only combination of the functionalities of the individual co…
Photon echo transients from an inhomogeneous ensemble of semiconductor quantum dots
S. V. Poltavtsev, M. Salewski, Yu. V. Kapitonov +8
An ensemble of quantum dot excitons may be used for coherent information manipulation. Due to the ensemble inhomogeneity any optical information retrieval occurs in form of a photo…
Improved Collective Thomson Scattering measurements of fast ions at ASDEX Upgrade
J. Rasmussen, S. K. Nielsen, M. Stejner +12
Understanding the behaviour of the confined fast ions is important in both current and future fusion experiments. These ions play a key role in heating the plasma and will be cruci…