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Tuesday, August 12 • 08:30 - 10:30
Quantum Optics, Nanophotonics II

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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 

Session Chairs
CP

Chris Phillips

Imperial College London

Speakers
JK

Julia Kabuss

Institute für Theoretische Physik, Technische Universität Berlin


Tuesday August 12, 2014 08:30 - 10:30
Room 18AB

Attendees (20)