Giant optical anisotropy in a single InAs quantum dot in a very dilute   quantum-dot ensemble
  We present the experimental evidence of giant optical anisotropy in single InAs quantum dots. Polarization-resolved photoluminescence spectroscopy reveals a linear polarization ratio with huge fluctuations, from one quantum dot to another, in sign and in magnitude with absolute values up to 82%. Systematic measurements on hundreds of quantum dots coming from two different laboratories demonstrate that the giant optical anisotropy is an intrinsic feature of dilute quantum-dot arrays. 
I. Favero (LPA), Guillaume Cassabois (LPA), A. Jankovic (LPA), R.   Ferreira (LPA), D. Darson (LPA), C. Voisin (LPA), C. Del...