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HL: Fachverband Halbleiterphysik
HL 20: Poster IA (Ultrafast phenomena; Optical properties; Transport; Theory)
HL 20.8: Poster
Monday, March 16, 2015, 15:00–20:00, Poster B
Towards coupling of photonic crystal cavities and waveguides as an integrated deterministic single-photon source in quantum photonic networks — •Stefan Hepp, Ulrich Rengstl, Matthias Paul, Michael Jetter, and Peter Michler — Institut für Halbleiteroptik und Funktionelle Grenzflächen and Center for Integrated Quantum Science and Technology IQST, Universität Stuttgart, Allmandring 3, 70569 Stuttgart, Germany
The generation and control of deterministic single photons is crucial for quantum photonic technologies like quantum teleportation, quantum computation and quantum cryptography. The requirements for such an on-demand single-photon source are a near unity photon-extraction and excitation efficiency coupled with a high degree of indistinguishability and an easy implementation in quantum photonic networks. Semiconductor quantum dots (QDs) have been proven as excellent candidates due to their outstanding optical properties and their easy integration in semiconductor nanophotonic devices. One main approach for an on-demand single-photon source is the positioning of QDs in photonic crystal cavities and waveguides for the coupling of the QD emission into guided modes, which is required for on-chip integration. An additional benefit of this approach is the exploitation of cavity quantum electrodynamic effects (cQED) to improve and manipulate the optical properties of the quantum dot emission. Here we present a way to an integrated on-demand single-photon source based on InAs/GaAs QDs positioned in a L3 photonic crystal cavity coupled to a waveguide for in-plane single-photon emission at 910nm.