2011/12/05 by Inah Yeo, Nitin S. Malik, Mathieu Munsch +10 · 2 citations
Physics and Astronomy · #Photonic Crystals and Applications #Quantum optics and atomic interactions #Semiconductor Quantum Structures and Devices #cond-mat.mes-hall #quant-ph
paper · pdf · doi:10.1063/1.3665629
published as Applied Physics Letters 99 (2011) 233106
openalex publication_date 2011/12/05 · arxiv created 2011/12/16 · arxiv updated 2011/12/21 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We evidence the influence of surface effects for InAs quantum dots embedded into GaAs photonic nanowires used as efficient single photon sources. We observe a continuous temporal drift of the emission energy that is an obstacle to resonant quantum optics experiments at the single photon level. We attribute the drift to the sticking of oxygen molecules onto the wire, which modifies the surface charge and hence the electric field seen by the quantum dot. The influence of temperature and excitation laser power on this phenomenon is studied. Most importantly, we demonstrate a proper treatment of the nanowire surface to suppress the drift.