Zobrazeno 1 - 10
of 5 574
pro vyhledávání: '"Forchel, A.."'
Autor:
Horikiri, Tomoyuki, Byrnes, Tim, Kusudo, Kenichiro, Ishida, Natsuko, Matsuo, Yasuhiro, Shikano, Yutaka, Loeffler, Andreas, Hoefling, Sven, Forchel, Alfred, Yamamoto, Yoshihisa
Publikováno v:
Phys. Rev. B 95, 245122 (2017)
Exciton-polaritons are a coherent electron-hole-photon (e-h-p) system where condensation has been observed in semiconductor microcavities. In contrast to equilibrium Bose-Einstein condensation (BEC) for long lifetime systems, polariton condensates ha
Externí odkaz:
http://arxiv.org/abs/1707.02006
Autor:
Mylnikov, D. A., Belykh, V. V., Sibeldin, N. N., Kulakovskii, V. D., Schneider, C., Höfling, S., Kamp, M., Forchel, A.
Publikováno v:
JETP Letters 101, 513 (2015)
The dynamics of spatial coherence and momentum distribution of polaritons in the regime of Bose-Einstein condensation are investigated in a GaAs microcavity with embedded quantum wells under nonresonant excitation with picosecond laser pulses. It is
Externí odkaz:
http://arxiv.org/abs/1603.06156
Autor:
Horikiri, Tomoyuki, Yamaguchi, Makoto, Kamide, Kenji, Matsuo, Yasuhiro, Byrnes, Tim, Ishida, Natsuko, Löffler, Andreas, Höfling, Sven, Shikano, Yutaka, Ogawa, Tetsuo, Forchel, Alfred, Yamamoto, Yoshihisa
Publikováno v:
Sci. Rep. 6, 25655 (2016)
In a standard semiconductor laser, electrons and holes recombine via stimulated emission to emit coherent light, in a process that is far from thermal equilibrium. Exciton-polariton condensates -- sharing the same basic device structure as a semicond
Externí odkaz:
http://arxiv.org/abs/1511.03786
Autor:
Kim, Na Young, Yamamoto, Yoshihisa, Utsunomiya, Shoko, Kusudo, Kenichiro, Hoefling, Sven, Forchel, Alfred
Microcavity exciton-polaritons are quantum quasi-particles arising from the strong light-matter coupling. They have exhibited rich quantum dynamics rooted from bosonic nature and inherent non-equilibrium condition. Dynamical condensation in microcavi
Externí odkaz:
http://arxiv.org/abs/1510.08197
Autor:
Nitsche, Wolfgang H., Kim, Na Young, Roumpos, Georgios, Schneider, Christian, Hoefling, Sven, Forchel, Alfred, Yamamoto, Yoshihisa
Publikováno v:
Phys. Rev. A 93, 053622 (May 2016)
We studied the spatial coherence of a Bosonic two-dimensional multi-mode condensate both through measurements and simulations. It is shown that condensates with a constant spatial density must be described as the superposition of several quantized mo
Externí odkaz:
http://arxiv.org/abs/1510.03096
Autor:
Pieczarka, Maciej, Syperek, Marcin, Dusanowski, Łukasz, Misiewicz, Jan, Langer, Fabian, Forchel, Alfred, Kamp, Martin, Schneider, Christian, Höfling, Sven, Kavokin, Alexey, Sęk, Grzegorz
Publikováno v:
Phys. Rev. Lett. 115, 186401 (2015)
An expanding polariton condensate is investigated under pulsed nonresonant excitation with a small laser pump spot. Far above the condensation threshold we observe a pronounced increase in the dispersion curvature with a subsequent linearization of t
Externí odkaz:
http://arxiv.org/abs/1503.07402
Autor:
Nitsche, Wolfgang H., Kim, Na Young, Roumpos, Georgios, Schneider, Christian, Kamp, Martin, Hoefling, Sven, Forchel, Alfred, Yamamoto, Yoshihisa
Publikováno v:
Phys.Rev.B 90 (2014) 205430
We observe quasi-long range coherence in a two-dimensional condensate of exciton-polaritons. Our measurements are the first to confirm that the spatial correlation algebraically decays with a slow power-law, whose exponent quantitatively behaves as p
Externí odkaz:
http://arxiv.org/abs/1401.0756
Autor:
Leymann, H. A. M., Hopfmann, C., Albert, F., Foerster, A., Khanbekyan, M., Schneider, C., Höfling, S., Forchel, A., Kamp, M., Wiersig, J., Reitzenstein, S.
We investigate correlations between orthogonally polarized cavity modes of a bimodal micropillar laser with a single layer of self-assembled quantum dots in the active region. While one emission mode of the microlaser demonstrates a characteristic s-
Externí odkaz:
http://arxiv.org/abs/1301.3417
Autor:
Gavrilov, S. S., Sekretenko, A. V., Gippius, N. A., Schneider, C., Höfling, S., Kamp, M., Forchel, A., Kulakovskii, V. D.
Spin transitions are studied theoretically and experimentally in a resonantly excited system of cavity polaritons in a magnetic field. Weak pair interactions in this boson system make possible fast and massive spin flips occurring at critical amplitu
Externí odkaz:
http://arxiv.org/abs/1212.5787
Autor:
Kusudo, Kenichiro, Kim, Na Young, Loeffler, Andreas, Hoefling, Sven, Forchel, Alfred, Yamamoto, Yoshihisa
We explore the exciton-polariton condensation in the two degenerate orbital states. In the honeycomb lattice potential, at the third band we have two degenerate vortex-antivortex lattice states at the inequivalent K and K'-points. We have observed en
Externí odkaz:
http://arxiv.org/abs/1211.3833