  Red quasars may represent a young stage of galaxy evolution that provide
important feedback to their host galaxies. We are studying a population of
extremely red quasars (ERQs) with exceptionally fast and powerful outflows, at
median redshift $z$ = 2.6. We present Keck/KCWI integral field spectra of 11
ERQs, which have a median color $i-W3$ = 5.9~mag, median $\left\langle
L_{\text{bol}} \right\rangle$ $\approx$ 5 $\times$ $10^{47}$ erg s$^{-1}$,
Ly$\alpha$ halo luminosity $\left\langle L_{\text{halo}} \right\rangle$ $=$ 5
$\times$ $10^{43}$ erg s$^{-1}$, and maximum linear size $>128$ kpc. The ERQ
halos are generally similar to those of blue quasars, following known trends
with $L_{\text{bol}}$ in halo properties. ERQs have halo symmetries similar to
Type-I blue quasars, suggesting Type-I spatial orientations. ERQ $\left\langle
L_{\text{halo}} \right\rangle$ is $\sim$2 dex below blue quasars, which is
marginal due to scatter, but consistent with obscuration lowering photon escape
fractions. ERQ halos tend to have more compact and circularly symmetric inner
regions than blue quasars, with median exponential scale lengths of $\sim$9
kpc, compared to $\sim$16 kpc for blue quasars. When we include the central
regions not available in blue quasar studies (due to PSF problems), the true
median ERQ halo scale length is just $\sim$6 kpc. ERQ halos are also
kinematically quiet, with median velocity dispersion 293 km s$^{-1}$,
consistent with expected virial speeds. Overall we find no evidence for
feedback on circumgalactic scales, and the current episode of quasar activity,
perhaps due to long outflow travel times, has not been around long enough to
affect the circumgalactic medium. We confirm the narrow Ly$\alpha$ emission
spikes found in ERQ aperture spectra are halo features, and are useful for
systemic redshifts and measuring outflow speeds in other features.
