Inverse design of environment-induced coherence

Atomic transitions with orthogonal dipole moments can be made to interfere each other by the use of an anisotropic environment. Here we describe, provide, and apply a computational toolbox capable algorithmically designing three-dimensional photonic environments that enhance degree coherence in atomic $\mathrm{\ensuremath{\Lambda}}$ systems. Example optimization runs produce spiral-like structures induce strongly localized polarization conversion reflected wave at position, yielding approximately double found using simple planar geometries.