Zobrazeno 1 - 10
of 146
pro vyhledávání: '"Oberli M"'
Publikováno v:
Phys. Rev. Lett. 122, 047402 (2019)
Feshbach resonance occurs when a pair of free particles is resonantly coupled to a molecular bound state. In the field of ultracold quantum gases, atomic Feshbach resonances became a usual tool for tailoring atomic interactions opening up many new ap
Externí odkaz:
http://arxiv.org/abs/1803.05183
Autor:
Takemura, N., Anderson, M. D., Navadeh-Toupchi, M., Oberli, D. Y., Portella-Oberli, M. T., Deveaud, B.
Publikováno v:
Phys. Rev. B 95, 205303 (2017)
We determine experimentally the spinor interaction constants of lower-polaritons $\alpha_1$ and $\alpha_2$ using resonant pump-probe spectroscopy with a spectrally narrow pump pulse. Our experimental findings are analyzed with the Bogoliubov-like the
Externí odkaz:
http://arxiv.org/abs/1701.09113
Autor:
Takemura, N., Anderson, M. D., Biswas, S., Navadeh-Toupchi, M., Oberli, D. Y., Portella-Oberli, M. T., Deveaud, B.
Publikováno v:
Phys. Rev. B 94, 195301 2016
The interaction between coherent polaritons and incoherent excitons plays an important role in polariton physics. Using resonant pump-probe spectroscopy with selective excitation of single polariton branches, we investigate the different dephasing me
Externí odkaz:
http://arxiv.org/abs/1611.04770
Autor:
Takemura, N., Trebaol, S., Anderson, M. D., Kohnle, V., Léger, Y., Oberli, D. Y., Portella-Oberli, M. T., Deveaud, B.
We investigate polariton-polariton interactions in a semiconductor microcavity through two-dimensional Fourier transform (2DFT) spectroscopy. We observe, in addition to the lower-lower and the upper-upper polariton self-interaction, a lower-upper cro
Externí odkaz:
http://arxiv.org/abs/1506.01964
Publikováno v:
Phys. Rev. B 91, 155307 (2015)
We report on noise-induced-spin-ordering in a collective quasipaticle system: spinor stochastic resonance. Synergetic interplay of a polarization-modulated signal and a polarization-noise allows us to switch coherently between the two metastable stat
Externí odkaz:
http://arxiv.org/abs/1505.00929
Autor:
Abbaspour, H., Sallen, G., Trebaol, S., Morier-Genoud, F., Portella-Oberli, M. T., Deveaud, B.
We report on the effect of noise on the characteristics of the bistable polariton emission system. The present experiment provides a time resolved access to the polariton emission intensity. We evidence the noise-induced transitions between the two s
Externí odkaz:
http://arxiv.org/abs/1505.00932
Integration of optical elements into scalable chips has been at the center of a large effort in recent years. Concurrently, the separation between the diverse functions, namely switches, detectors or emitters increases significantly the final number
Externí odkaz:
http://arxiv.org/abs/1312.1238
Autor:
Cerna, R., Sarchi, D., Paraiso, T. K., Nardin, G., Leger, Y., Richard, M., Pietka, B., Daif, O. El, Morier-Genoud, F., Savona, V., Portella-Oberli, M. T., Deveaud-Pledran, B.
Polaritons in semiconductor microcavities are hybrid quasiparticles consisting of a superposition of photons and excitons. Due to the photon component, polaritons are characterized by a quantum coherence length in the several micron range. Owing to t
Externí odkaz:
http://arxiv.org/abs/0904.4444
A theoretical investigation of the trion formation process from free carriers in a single GaAs/Al_{1-x}Ga_{x}As quantum well is presented. The mechanism for the formation process is provided by the interaction of the electrons and holes with phonons.
Externí odkaz:
http://arxiv.org/abs/0901.3645
We investigate the effect of a two dimensional electron gas on the linear optical properties of CdTe quantum wells. We evidence experimentally the high energy tail of the exciton and charged exciton resonances which depends on electron concentration.
Externí odkaz:
http://arxiv.org/abs/0712.1248