  The electronically nematic order has emerged as a key feature of cuprate
superconductors,however, its correlation with the fundamental properties such
as the electromagnetic response remains unclear. Here the nematic-order state
strength dependence of the electromagnetic response in cuprate superconductors
is investigated within the framework of the kinetic-energy-driven
superconductivity. It is shown that a significant anisotropy of the
electromagnetic response is caused by the electronic nematicity. In particular,
in addition to the pure d-wave component of the superconducting gap, the pure
s-wave component of the superconducting gap is generated by the electronic
nematicity, therefore there is a coexistence and competition of the d-wave
component and the s-wave component. This coexistence and competition leads to
that the maximal condensation energy appears at around the optimal strength of
the electronic nematicity, and then decreases in both the weak and strong
strength regions, which in turn induces the enhancement of superconductivity,
and gives rise to the dome-like shape of the nematic-order state strength
dependence of the superfluid density.
