Quadexciton cascade and fine-structure splitting of the triexciton in a single quantum dot M. R. Molas, A. A. L. Nicolet, A. Babiński and M. Potemski EPL, 113 1 (2016) 17004 Published online: 27 January 2016 DOI: 10.1209/0295-5075/113/17004