  Using an optical potential with subwavelength resolution in the form of sharp
$\delta$-like peaks, new potential landscapes are created with increased
anharmonicity in placement of lattice band energies and more favorable energy
scales. In particular, this makes the ultracold atom p-band gas more stable.
The article outlines the details of the construction and discusses the p-band
stability in canonical cosine optical lattice potential, double well potential,
and a combination of a classical cosine potential with dark state peaked
potential.
