71 citations · 417 across the 22 of their papers we have counts for
20 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.…
Long-living dark coherence brought to light by magnetic-field controlled photon echo
I. A. Solovev, I. I. Yanibekov, Yu. P. Efimov +5
Larmor precession of the quasiparticle spin about a transverse magnetic field leads to the oscillations in the spontaneous photon echo signal due to the shuffling of the optical co…
Accurate photon echo timing by optical freezing of exciton dephasing and rephasing in quantum dots
A. N. Kosarev, H. Rose, S. V. Poltavtsev +7
Semiconductor quantum dots are excellent candidates for ultrafast coherent manipulation of qubits by laser pulses on picosecond timescales or even faster. In inhomogeneous ensemble…
The in-plane anisotropy of the hole factor in CdTe/(Cd,Mg)Te quantum wells studied by spin-dependent photon echoes
S. V. Poltavtsev, I. A. Yugova, A. N. Kosarev +6
We use the two-pulse spin-dependent photon echo technique to study the in-plane hole spin anisotropy in a 20~nm-thick CdTe/CdMgTe single quantum well by exciting…
Quantum beats in the polarization of the spin-dependent photon echo from donor-bound excitons in CdTe/(Cd,Mg)Te quantum wells
S. V. Poltavtsev, I. A. Yugova, Ya. A. Babenko +6
We study the quantum beats in the polarization of the photon echo from donor-bound exciton ensembles in semiconductor quantum wells. To induce these quantum beats, a sequence compo…
Step-like spectral distribution of photoelectrons at the percolation threshold in heavily -doped GaAs
S. V. Poltavtsev, R. I. Dzhioev, V. L. Korenev +3
We study the origin of the step-like shoulder on the high energy side of the low temperature photoluminescence spectrum of heavily -doped GaAs. We show experimentally that it is…
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 coherent dynamics of localized excitons in (In,Ga)N/GaN quantum wells
S. V. Poltavtsev, I. A. Solovev, I. A. Akimov +6
We study the coherent dynamics of localized excitons in 100-periods of 2.5 nm thick (In,Ga)N/GaN quantum wells with 7.5% indium concentration, measured with spectroscopic resolutio…
Coherent dynamics of localized excitons and trions in ZnO/(Zn,Mg)O quantum wells studied by photon echoes
I. A. Solovev, S. V. Poltavtsev, Yu. V. Kapitonov +5
We study optically the coherent evolution of trions and excitons in a -doped 3.5 nm-thick ZnO/ZnMgO multiple quantum well by means of time-resolved four-wave m…
Photon echo from localized excitons in semiconductor nanostructures
S. V. Poltavtsev, I. A. Yugova, I. A. Akimov D. R. Yakovlev +1
An overview on photon echo spectroscopy under resonant excitation of the exciton complexes in semiconductor nanostructures is presented. The use of four-wave-mixing technique with…
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…
Damping of Rabi oscillations in intensity-dependent photon echoes from exciton complexes in a CdTe/(Cd,Mg)Te single quantum well
S. V. Poltavtsev, M. Reichelt, I. A. Akimov +6
We study Rabi oscillations detected in the coherent optical response from various exciton complexes in a 20~nm-thick CdTe/(Cd,Mg)Te quantum well using time-resolved photon echoes.…
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 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…
Extremely low inhomogeneous broadening of exciton lines in shallow (In,Ga)As/GaAs quantum wells
S. V. Poltavtsev, Yu. P. Efimov, Yu. K. Dolgikh +3
We study radiative linewidth of exciton resonance in shallow InGaAs/GaAs single quantum wells as a function of indium concentration in the range and wel…
Noise spectroscopy of the optical microcavity: nonlinear amplification of the spin noise signal and giant noise
S. V. Poltavtsev, I. I. Ryzhov, V. S. Zapasskii +1
The spin-fluctuations-related Kerr rotation noise of the optical beam reflected from a microcavity with a quantum well in the intermirror gap is studied. In the regime of anti-cros…
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…
Spin noise spectroscopy of a single-quantum-well microcavity
S. V. Poltavtsev, I. I. Ryzhov, M. M. Glazov +6
We report on the first experimental observation of spin noise in a single semiconductor quantum well embedded into a microcavity. The great cavity-enhanced sensitivity to fluctuati…
Optically Controlled Excitonic Transistor
P. Andreakou, S. V. Poltavtsev, J. R. Leonard +7
Optical control of exciton fluxes is realized for indirect excitons in a crossed-ramp excitonic device. The device demonstrates experimental proof of principle for all-optical exci…
Pattern Formation in the Exciton Inner Ring
M. Remeika, A. T. Hammack, S. Poltavtsev +6
We report on the spatially separated pump-probe study of indirect excitons in the inner ring in the exciton emission pattern. A pump laser beam generates the inner ring and a weake…