The Experts below are selected from a list of 297 Experts worldwide ranked by ideXlab platform

P Michler - One of the best experts on this subject based on the ideXlab platform.

  • Photon Statistics of semiconductor microcavity lasers
    Physical Review Letters, 2007
    Co-Authors: S M Ulrich, C Gies, Serkan Ates, Jan Wiersig, S Reitzenstein, C Hofmann, A Loffler, A Forchel, F Jahnke, P Michler
    Abstract:

    : We present measurements of first- and second-order coherence of quantum-dot micropillar lasers together with a semiconductor laser theory. Our results show a broad threshold region for the observed high-beta microcavities. The intensity jump is accompanied by both pronounced Photon intensity fluctuations and strong coherence length changes. The investigations clearly visualize a smooth transition from spontaneous to predominantly stimulated emission which becomes harder to determine for high beta. In our theory, a microscopic approach is used to incorporate the semiconductor nature of quantum dots. The results are in agreement with the experimental intensity traces and the Photon Statistics measurements.

M Bayer - One of the best experts on this subject based on the ideXlab platform.

  • Photon Statistics excitation spectroscopy of a quantum dot micropillar laser
    Physical Review Letters, 2015
    Co-Authors: T Kazimierczuk, Johannes Schmutzler, Marc Asmann, Christian Schneider, Martin Kamp, Sven Hofling, M Bayer
    Abstract:

    We introduce Photon-Statistics excitation spectroscopy and exemplarily apply it to a quantum-dot micropillar laser. Both the intensity and the Photon number Statistics of the emission from the micropillar show a strong dependence on the Photon Statistics of the light used for excitation of the sample. The results under coherent and pseudothermal excitation reveal that a description of the laser properties in terms of mean input Photon numbers is not sufficient. It is demonstrated that the micropillar acts as a superthermal light source when operated close to its threshold. Possible applications for important spectroscopic techniques are discussed.

Gerhard Rempe - One of the best experts on this subject based on the ideXlab platform.

  • Photon Statistics of a non stationary periodically driven single Photon source
    New Journal of Physics, 2004
    Co-Authors: Markus Hennrich, T Legero, Axel Kuhn, Gerhard Rempe
    Abstract:

    We investigate the Photon Statistics of a single-Photon source that operates under non-stationary conditions. The Photons are emitted by shining a periodic sequence of laser pulses on single atoms falling randomly through a high-finesse optical cavity. Strong antibunching is found in the intensity correlation of the emitted light, demonstrating that a single atom emits Photons one at a time. However, the number of atoms interacting with the cavity follows a Poissonian Statistics so that, on average, no sub-Poissonian Photon Statistics is obtained, unless the measurement is conditioned on the presence of single atoms.

Maria Bondani - One of the best experts on this subject based on the ideXlab platform.

  • NONTRIVIAL Photon Statistics WITH LOW RESOLUTION-THRESHOLD Photon COUNTERS
    International Journal of Quantum Information, 2007
    Co-Authors: Guido Zambra, Alessia Allevi, Alessandra Andreoni, Maria Bondani, Matteo G. A. Paris
    Abstract:

    We address the reconstruction of Photon Statistics using realistic photodetectors having low quantum efficiency and finite resolution as Photon counters. Using a maximum-likelihood method, based on measurements taken at different quantum efficiencies, we experimentally reconstruct the nontrivial Photon Statistics of the state obtained by mixing at a beam-splitter two phase-averaged coherent states. The effect of using different resolution thresholds is also discussed.

  • Photon Statistics by Low Resolution-Threshold Photodetectors
    2006 European Conference on Optical Communications, 2006
    Co-Authors: Guido Zambra, Alessia Allevi, Maria Bondani, Matteo G. A. Paris, Alessandra Andreoni
    Abstract:

    Maximum-likelihood method allows the reconstruction of single-peaked Photon Statistics by using realistic photodetectors having low quantum efficiencies and discriminating between zero, one and more than one detected Photons. Higher efficiencies are needed for multi-peaked Statistics.

  • thermal Photon Statistics in spontaneous parametric downconversion
    Optics Express, 2004
    Co-Authors: F Paleari, Guido Zambra, Alessandra Andreoni, Maria Bondani
    Abstract:

    We investigate Photon Statistics in the signal beam generated by frequency nondegenerate parametric downconversion both with and without a seed field along the idler direction. The experiments are performed on the signal generated in β-barium borate by a traveling-wave pump pulse that is the frequency-tripled output of an amplified Nd:YLF picosecond laser. The high powers obtained allow us to measure the number of Photons with a simple detection technique. When both signal and idler fields are initially in their vacuum states, the generated fields are mixtures of equally occupied modes with thermal Photon-number Statistics.

Jan Wiersig - One of the best experts on this subject based on the ideXlab platform.