Zobrazeno 1 - 10
of 172
pro vyhledávání: '"A, Glässl"'
Autor:
Quilter, J. H., Brash, A. J., Liu, F., Glässl, M., Barth, A. M., Axt, V. M., Ramsay, A. J., Skolnick, M. S., Fox, A. M.
We demonstrate an approach to realize the population inversion of a single InGaAs/GaAs quantum dot, which is driven by a laser pulse tuned within the neutral exciton phonon sideband. The inversion is achieved by rapid thermalization of the optically
Externí odkaz:
http://arxiv.org/abs/1409.0913
We investigate both experimentally and theoretically a simple yet more robust and flexible alternative to Rabi oscillation-type biexciton preparation protocols traditionally used for semiconductor quantum dots. The quantum dot is excited by a strong
Externí odkaz:
http://arxiv.org/abs/1408.7027
Publikováno v:
Phys. Rev. B 90, 075309 (2014)
We demonstrate that in quantum-dot cavity systems, the interplay between acoustic phonons and photon losses introduces novel features and characteristic dependencies in the system dynamics. In particular, the combined action of both loss mechanisms s
Externí odkaz:
http://arxiv.org/abs/1310.2115
We investigate the effect of a temperature dependent viscosity on the onset of thermal convection in a horizontal layer of a binary fluid mixture that is heated from below. For an exponential temperature dependence of the viscosity, we find in binary
Externí odkaz:
http://arxiv.org/abs/1310.0688
Publikováno v:
Phys. Rev. Lett. 110, 147401 (2013)
It is demonstrated how the exciton and the biexciton state of a quantum dot can be prepared with high fidelity on a picosecond time-scale by driving the dot with a strong laser pulse that is tuned above the exciton resonance for exciton preparation a
Externí odkaz:
http://arxiv.org/abs/1303.3435
Autor:
Glässl, M., Axt, V. M.
Publikováno v:
Phys. Rev. B 86, 245306 (2012)
We report on a strong dependence of the phonon-induced damping of Rabi dynamics in an optically driven exciton-biexciton quantum dot system on the polarization of the exciting pulse. While for a fixed pulse intensity the damping is maximal for linear
Externí odkaz:
http://arxiv.org/abs/1212.0642
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:
Burgis, Markus, Schaller, Volker, Glässl, Martin, Kaiser, Benjamin, Köhler, Werner, Krekhov, Alexei, Zimmermann, Walter
Anomalous diffusion is predicted for Brownian particles in inhomogeneous viscosity landscapes by means of scaling arguments, which are substantiated through numerical simulations. Analytical solutions of the related Fokker-Planck equation in limiting
Externí odkaz:
http://arxiv.org/abs/1010.3115