Berlin 2018 – wissenschaftliches Programm

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DS: Fachverband Dünne Schichten

DS 27: New Twists for Nanoquakes on a Chip - Emerging Applications of Surface Acoustic Waves in Condensed Matter Physics (Focussed Session): Session I

DS 27.5: Vortrag

Donnerstag, 15. März 2018, 11:45–12:00, H 2032

Surface acoustic wave modulation of a coherently driven quantum dot in a pillar microcavity — •Bruno Villa^1,2, Anthony J. Bennett¹, David J. P. Ellis¹, James P. Lee^1,3, Joanna Skiba-Szymanska¹, Thomas A. Mitchell², Jonathan Griffiths², Ian Farrer², David A. Ritchie¹, Christopher J. B. Ford², and Andrew J. Shields¹ — ¹Toshiba Research Europe Limited, Cambridge Research Laboratory, 208 Cambridge Science Park, Milton Road, Cambridge CB4 0GZ, United Kingdom — ²Cavendish Laboratory, University of Cambridge, J. J. Thomson Avenue, Cambridge CB3 0HE, United Kingdom — ³Engineering Department, University of Cambridge, 9 J. J. Thomson Avenue, Cambridge, CB3 0FA, United Kingdom

In this work we demonstrate the generation of a high-frequency pulsed single-photon stream. A quantum dot embedded in a pillar microcavity efficiently scatters photons when driven coherently with a narrow-band continuous wave laser. Simultaneously, the transition energy is periodically tuned by a surface acoustic wave (SAW) propagating along the substrate at 1 GHz. The combined action of the light and strain fields on the quantum dot yields a periodic signal displaying anti-bunching. In addition we are able to resolve multiple phonon sidebands in the emission spectrum.