Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Sebastian Lüker"'
Publikováno v:
Photonics, Vol 2, Iss 1, Pp 214-227 (2015)
In solid-state physics, the quantized lattice vibrations, i.e., the phonons, play a vital role. Phonons, much like photons, satisfy bosonic commutation relations, and therefore, various concepts well-known in quantum optics can be transferred to the
Externí odkaz:
https://doaj.org/article/4d6c4c98274941b0aaeeae6e758e4073
Publikováno v:
Physical Review B. 96
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-asse
Autor:
Richard J. Warburton, Sascha R. Valentin, Sebastian Lüker, Andreas D. Wieck, Doris E. Reiter, Jean-Michel Chauveau, Arne Ludwig, Tilmann Kuhn, Timo Kaldewey, Andreas V. Kuhlmann
Publikováno v:
Physical Review B. 95
Excitation of a semiconductor quantum dot with a chirped laser pulse allows excitons to be created by rapid adiabatic passage. In quantum dots this process can be greatly hindered by the coupling to phonons. Here we add a high chirp rate to ultra-sho
Autor:
Sebastian Lüker, Sascha R. Valentin, Tilmann Kuhn, Timo Kaldewey, Andreas V. Kuhlmann, Doris E. Reiter, Andreas D. Wieck, Arne Ludwig, Richard J. Warburton
A biexciton in a semiconductor quantum dot is a source of polarization-entangled photons with high potential for implementation in scalable systems. Several approaches for non-resonant, resonant and quasi-resonant biexciton preparation exist, but all
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ce780c5aab3c2f7c8079c2b09d50d4c1
In semiconductor quantum dots the coupling to the environment, i.e. to phonons, plays a crucial role for optical state preparation. We analyze the phonon impact on two methods for a direct optical preparation of the dark exciton, which is enabled by
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::177a62434fd1a9de8e610a9b0f8435bc
Autor:
Sebastian Lüker, Doris E. Reiter
Publikováno v:
Semiconductor Science and Technology. 34:063002
Autor:
Doris E. Reiter, Anna Grodecka-Grad, Vollrath M. Axt, Martin Glässl, Tilmann Kuhn, Paweł Machnikowski, Krzysztof Gawarecki, Sebastian Lüker
Publikováno v:
physica status solidi c. 10:1210-1213
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
Autor:
Andreas M. Barth, Sebastian Lüker, Doris E. Reiter, Alexei Vagov, Vollrath M. Axt, Tilmann Kuhn
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 pr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::31d2bca01e9e14d33402df7f1f07bac1
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, the preparation a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fab6b3441c6243986e34ca3f4be05224
Autor:
Doris E. Reiter, Vollrath M. Axt, Paweł Machnikowski, Tilmann Kuhn, Daniel Wigger, Sebastian Lüker
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:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1b255e57e366aa8f7d61b12e30e303ff