“…For the biexciton binding energy we use values in the range of a few meV, which are typical for semiconductor quantum dots with the optical gap considered here, see for example Ref. [ 59 ]. The same values also appear in many other works [ 4 , 5 , 6 , 7 , 12 , 17 , 18 , 20 , 21 , 60 ].…”