Conference Paper

Manipulation of quantum emitters on photonic crystal cavities

Inst. of Phys., Humboldt-Univ. Berlin, Berlin
Conference: Lasers and Electro-Optics, 2008 and 2008 Conference on Quantum Electronics and Laser Science. CLEO/QELS 2008. Conference on
Source: IEEE Xplore


We investigate the manipulation of nanoscopic particles, which contain few or single quantum emitters, on photonic crystal cavities using scanning probe techniques, thereby aiming at the precise control of light-matter coupling in these cavities.

Download full-text


Available from: Bernd Löchel, Sep 09, 2015
0 Reads
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: Photonic crystal (PC) nanocavities based on silicon nitride membranes are studied as tools for the manipulation of spontaneous emission in the wavelength range between 550 nm and 800 nm. We observe a strong modification of the fluorescence spectrum of dye molecules spin-cast on top of the PC, indicating an efficient coupling of the dye emission to the cavity modes. The cavity design is optimized with respect to the quality factor and values of nearly 1500 are achieved experimentally. Taking into account the small mode volume, which leads to a strong Purcell enhancement, these nanocavities enable the realization of efficient single photon sources in the visible region of the spectrum. Furthermore, their fabrication is fully compatible with existing CMOS technology, making an integration into more complex optoelectronic devices feasible.
    Optics Express 01/2008; 15(25):17231-40. DOI:10.1364/OE.15.017231 · 3.49 Impact Factor
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: We demonstrate a deterministic approach to the implementation of solid-state cavity quantum electrodynamics (QED) systems based on a precise spatial and spectral overlap between a single self-assembled quantum dot and a photonic crystal membrane nanocavity. By fine-tuning nanocavity modes with a high quality factor into resonance with any given quantum dot exciton, we observed clear signatures of cavity QED (such as the Purcell effect) in all fabricated structures. This approach removes the major hindrances that had limited the application of solid-state cavity QED and enables the realization of experiments previously proposed in the context of quantum information processing.
    Science 06/2005; 308(5725):1158-61. DOI:10.1126/science.1109815 · 33.61 Impact Factor
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: A laser cavity formed from a single defect in a two-dimensional photonic crystal is demonstrated. The optical microcavity consists of a half wavelength–thick waveguide for vertical confinement and a two-dimensional photonic crystal mirror for lateral localization. A defect in the photonic crystal is introduced to trap photons inside a volume of 2.5 cubic half-wavelengths, approximately 0.03 cubic micrometers. The laser is fabricated in the indium gallium arsenic phosphide material system, and optical gain is provided by strained quantum wells designed for a peak emission wavelength of 1.55 micrometers at room temperature. Pulsed lasing action has been observed at a wavelength of 1.5 micrometers from optically pumped devices with a substrate temperature of 143 kelvin.
    Science 07/1999; 284(5421):1819-21. DOI:10.1126/science.284.5421.1819 · 33.61 Impact Factor