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Title: Polarization properties and disorder effects in H{sub 3} photonic crystal cavities incorporating site-controlled, high-symmetry quantum dot arrays

We report on the effects of optical disorder on breaking the symmetry of the cavity modes of H{sub 3} photonic crystal cavities incorporating site-controlled pyramidal quantum dots (QDs) as the internal light source. The high in-plane symmetry of the polarization states of the pyramidal QDs simplifies the analysis of the polarization states of the H{sub 3} cavities. It is shown that the optical disorder induced by fabrication imperfections lifts the degeneracy of the two quadrupole cavity modes and tilts the elongation axes of the cavity mode patterns with respect to the ideal, hexagonal symmetry case. These results are useful for designing QD-cavity structures for polarization-entangled photon sources and few-QD lasers.
Authors:
; ; ; ; ;  [1] ;  [2]
  1. Laboratory of Physics of Nanostructures, École Polytechnique Fédérale de Lausanne, CH-1015 Lausanne (Switzerland)
  2. Istituto Officina dei Materiali CNR, Laboratorio TASC, I-34149 Trieste (Italy)
Publication Date:
OSTI Identifier:
22486323
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 107; Journal Issue: 3; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; CRYSTALS; DESIGN; FABRICATION; LASERS; LIGHT SOURCES; PHOTONS; POLARIZATION; QUANTUM DOTS; QUANTUM ENTANGLEMENT; SYMMETRY