  Recently discovered superconducting infinite-layer nickelates $R$NiO$_2$
($R$=Nd, La, Pr) attracts increasing attention as a similar system to cuprates.
Both $R$NiO$_2$ and YBCO cuprates display the three-dimensional (3D) CDW with
wave vector ${\bf q}\sim(2\pi/3,0,q_z)$, while $q_z$ is non-zero and
incommensurate in the former system. Here, we reveal that the characteristic
CDW in $R$NiO$_2$ can be naturally explained as the quantum interference
between paramagnons, by focusing on the following characteristics of
$R$NiO$_2$: (i) prominent three-dimensionality in the Fermi surface and (ii)
large self-hole-doping ($\sim 14$%). This mechanism predicts the emergence of
the $d_{x^2-y^2}$-wave bond order at a secondary 3D nesting vector ${\bf
q}^c\sim(2\pi/3,0,q^c_z)$ $(q^c_z=0.2\pi\sim 2\pi/3)$. The obtained strong bond
fluctuations lead to the non-Fermi liquid electronic states and superconducting
states in nickelates.
