  Multi-million atom simulations are performed to study stacking-angle
($\theta$) dependent strain profiles, electronic structure, and
polarization-resolved optical modes from [110]-tilted quantum dot stacks
(QDSs). Our calculations reveal highly asymmetrical biaxial strain
distributions for the tilted QDSs that strongly influence the confinements of
hole wave functions and thereby control the polarization response. The
calculated values of degree of polarizations, in good agreement with the
available experimental data, predict a unique property of the tilted QDSs that
the isotropic polarization response can be realized from both [110] and [-110]
cleaved-edges $-$ a feature inaccessible from the conventional [001]-QDSs.
Detailed investigations of polar plots further establish that tilting the QDSs
provides an additional knob to fine tune their polarization properties.
