5 papers
Extending the time of coherent optical response in ensemble of singly-charged InGaAs quantum dots
A. N. Kosarev, A. V. Trifonov, I. A. Yugova +10
The ability to extend the time scale of the coherent optical response from large ensembles of quantum emitters is highly appealing for applications in quantum information devices.…
Dynamics and control of nonradiative excitons - free carriers mixture in GaAs/AlGaAs quantum wells
A. S. Kurdyubov, A. V. Trifonov, B. F. Gribakin +9
Dynamics of nonradiative excitons with large in-plane wave vectors forming a so-called reservoir is experimentally studied in a high-quality semiconductor structure containing a 14…
Exciton energy oscillations induced by quantum beats
A. V. Trifonov, A. S. Kurdyubov, I. Ya. Gerlovin +5
In this paper, we experimentally demonstrate an oscillating energy shift of quantum-confined exciton levels in a semiconductor quantum well after excitation into a superposition of…
Nanosecond-scale magneto-exciton energy oscillations in quantum wells
A. V. Trifonov, E. S. Khramtsov, K. V. Kavokin +6
We report on the experimental evidence for a nanosecond time-scale spin memory based on nonradiative excitons. The effect manifests itself in magnetic-field-induced oscillations of…
Impurity-induced modulation of terahertz waves in optically excited GaAs
A. S. Kurdyubov, A. V. Trifonov, I. Ya. Gerlovin +2
The effect of the photoinduced absorption of terahertz (THz) radiation in a semi-insulating GaAs crystal is studied by the pulsed THz transmission spectroscopy. We found that a bro…