Zobrazeno 1 - 10
of 50
pro vyhledávání: '"Lüker, S."'
Phonons strongly influence the optical control of semiconductor quantum dots. When modeling the electron-phonon interaction in several theoretical approaches the quantum dot geometry is approximated by a spherical structure, though typical self-assem
Externí odkaz:
http://arxiv.org/abs/1712.01728
We investigate theoretically the temporal behavior of a quantum dot under off-resonant optical excitation targeted at fast acoustic phonon-assisted state preparation. We demonstrate that in a preparation process driven by short laser pulses three pro
Externí odkaz:
http://arxiv.org/abs/1601.07886
Because of their weak coupling to the electromagnetic field dark excitons in semiconductor quantum dots possess extremely long lifetimes, which makes them attractive candidates for quantum information processing. On the other hand, preparation and ma
Externí odkaz:
http://arxiv.org/abs/1511.01778
The energy transport of acoustic phonons generated by the optical excitation of a quantum dot as well as the coherence properties of these phonons are studied theoretically both for the case of a pulsed excitation and for a continuous wave (cw) excit
Externí odkaz:
http://arxiv.org/abs/1312.3754
Autor:
Gawarecki, K., Lüker, S., Reiter, D. E., Kuhn, T., Glässl, M., Axt, V. M., Grodecka-Grad, A., Machnikowski, P.
Publikováno v:
Phys. Stat. Sol. (c) 10, 1210 (2013)
We study the evolution of a quantum dot controlled by a frequency-swept (chirped), linearly polarized laser pulse in the presence of carrier-phonon coupling. The final occupation of the exciton state is limited both due to phonon-induced transitions
Externí odkaz:
http://arxiv.org/abs/1210.6096
Autor:
Glässl, M., Barth, A., Gawarecki, K., Machnikowski, P., Croitoru, M. D., Lüker, S., Reiter, D. E., Kuhn, T., Axt, V. M.
Publikováno v:
Phys. Rev. B 87, 085303 (2013)
We investigate theoretically under which conditions a stable and high-fidelity preparation of the biexciton state in a quantum dot can be realized by means of adiabatic rapid passage in the presence of acoustic phonon coupling. Our analysis is based
Externí odkaz:
http://arxiv.org/abs/1210.1420
Autor:
Gawarecki, K., Lüker, S., Reiter, D. E., Kuhn, T., Glässl, M., Axt, V. M., Grodecka-Grad, A., Machnikowski, P.
Publikováno v:
Phys. Rev. B 86, 235301 (2012)
We study the evolution of an exciton confined in a quantum dot adiabatically controlled by a frequency-swept (chirped) laser pulse in the presence of carrier-phonon coupling. We focus on the dynamics induced by a linearly polarized beam and analyze t
Externí odkaz:
http://arxiv.org/abs/1209.2675
Autor:
Reiter, D. E., Lüker, S., Gawarecki, K., Grodecka-Grad, A., Machnikowski, P., Axt, V. M., Kuhn, T.
Publikováno v:
Acta Physica Polonica A, Vol. 122, 1065-1068 (2012)
The effect of acoustic phonons on different light-induced excitations of a semiconductor quantum dot is investigated. Resonant excitation of the quantum dot leads to Rabi oscillations, which are damped due to the phonon interaction. When the excitati
Externí odkaz:
http://arxiv.org/abs/1207.6660
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