ICPS 2014

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8:30-8:45
Oral: Marco Felici
Single Photons on Demand from Novel Site-Controlled GaAsN/GaAsN:H Quantum Dots
Co-authors: Simone Birindelli, Johannes Wildmann, Giorgio Pettinari, Antonio Polimeni, Mario Capizzi, Annamaria Gerardino, Silvia Rubini, Faustino Martelli, Armando Rastelli, Rinaldo Trotta

8:45-9:00
Oral: Clement Jarlov
Effect of Dephasing on the Coupling of Quantum Dot Excitons & Optical Cavities
Co-Authors: Etienne Wodey, Alexey Lyasota, Milan Calic, Pascal Gallo, Alok Rudra, Benjamin Dwir, Elyahou Kapon

9:00-9:30
Invited: Julia Kabuss
Theory of an Optically Driven Quantum Dot Phonon Laser

Recent technological progress in the area of nanophononics and the design of high $Q$ phonon cavities [acoustic nanocavities, nanomechanical oscillators] constitutes the basis for new applications, such as phonon lasers. As an acoustic pendent to the optical lasers, the concept of stimulated emission can be generalized onto phononic systems. As a source of coherent and nonequilibrium phonons, we propose a optically pumped quantum-dot-acoustic cavity system, operated as a phonon laser. Next to a full quantum theory approach [J. Kabuss et al. Phys. Rev. Lett. 109, 054301 (2012)], where we study the statistical properties of the phonon emission, we further develop an effective semiclassical treatment [J. Kabuss et al., Phys. Rev. B, 88, 064305 (2013)]. Deriving analytical formulas for the statistics, phonon number and threshold properties we give an analysis of the operational limits and regimes of such a phonon source. Even though the equations exhibit new contributions, we find a strong resemblance to an incoherently pumped single atom laser exhibiting the typical self-quenching behavior. In contrast to the incoherently pumped atom case, however, a medium pure dephasing as present in the semiconductor case conveniently counteracts this feature.

Co-authors: Alexander Carmele, Andreas Knorr

9:30-9:45
Oral: Thorsten Reichert
Directed Emission from InGaAs Quantum Dots into Guided Photonic Crystal Waveguide Modes: Purcell Effect & Disorder
Co-authors: Stefan Lichtmannecker, Julia Wembacher, Max Bichler, Michael Kaniber, Jonathan J. Finley

9:45-10:00
Oral: Michele Montinaro
Quantum Dot Opto-Mechanics in a Fully Self-Assembled Nanowire
Co-authors: Gunter Wüst, Mathieu Munsch, Yannik Fontana, Eleonora Russo-Averchi, Daniel Rüffer, Martin Heiss, Anna Fontcuberta i Morral, Richard J. Warburton, Martino Poggio

10:00-10:15
Oral: Tomasz Jakubczyk
Inhibition & Enhancement of the Spontaneous Emission of Quantum Dots in Micropillar Cavities with Radial Bragg Reflectors
Co-authors: Helena Franke, Tomasz Smolenski, Maciej Sciesiek, Wojciech Pacuski, Andrzej Golnik, Rudiger Schmidt-Grund, Marius Grundmann, Carsten Kruse, Detlef Hommel, Piotr Kossacki

10:15-10:30
Oral: Mirco Kolarczik
Quantum Coherence Induces Pulse Shape Modification in a Semiconductor Optical Amplifier at Room Temperature
Co-authors: Nina Owschimikow, Julian Korn, Benjamin Lingnau, Yücel Kaptan, Dieter Bimberg, Eckehard Schöll, Kathy Lüdge, Ulrike Woggon