Comment to article "A light--hole exciton in a quantum dot" by Y.H.Huo et al, Nature Physics 10, 46 (2014)

The exciton ground state in strained quantum dots similar to those fabricated in article specified in the title is shortly discussed within a relevant model Hamiltonian. Some characteristics of the light–hole exciton ground state reached in a dot under the tensile biaxial strain appear to be sensitive to the strain anisotropy breaking a purity of this state. It refers in particular to a degree of the in–plane polarization of the emission and the fine structure of the ground state.