Abstract
A high degree of the circular polarization of trion emission has been observed in self-organized $\mathrm{Cd}\mathrm{Se}∕\mathrm{Zn}\mathrm{Se}$ quantum dots under quasiresonant optical excitation. The depolarization of emission in a tilted magnetic field was investigated, and it has been established that the observed polarization results from optical spin orientation of heavy holes. The $g$-factor anisotropy of holes has been measured. It has been shown that due to a specific formation of nanoislands, the quantization axis of a quantum dot declines markedly from the structure growth axis.
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