Permanent tuning of quantum dot transitions to degenerate microcavity   resonances
  We demonstrate a technique for achieving spectral resonance between a polarization-degenerate micropillar cavity mode and an embedded quantum dot transition. Our approach is based on a combination of isotropic and anisotropic tensile strain effected by laser-induced surface defects, thereby providing permanent tuning. Such a technique is a prerequisite for the implementation of scalable quantum information schemes based on solid-state cavity quantum electrodynamics. 
Jan Gudat, Cristian Bonato, Evert van Nieuwenburg, Susanna Thon,   Hyochul Kim, Pierre Petroff, Martin van Exter, Dirk Bouwm...
physics.optics cond-mat.mes-hall quant-ph