  Combining large-area optical quasar surveys with the new far-infrared
Herschel-ATLAS Data Release 1, we search for an observational signature
associated with the minority of quasars possessing bright far-infrared (FIR)
luminosities. We find that FIR-bright quasars show broad CIV emission line
blueshifts in excess of that expected from the optical luminosity alone,
indicating particularly powerful nuclear outflows. The quasars show no signs of
having redder optical colours than the general ensemble of optically-selected
quasars, ruling out differences in line-of-sight dust within the host galaxies.
We postulate that these objects may be caught in a special evolutionary phase,
with unobscured, high black hole accretion rates and correspondingly strong
nuclear outflows. The high FIR emission found in these objects is then either a
result of star formation related to the outflow, or is due to dust within the
host galaxy illuminated by the quasar. We are thus directly witnessing
coincident small-scale nuclear processes and galaxy-wide activity, commonly
invoked in galaxy simulations which rely on feedback from quasars to influence
galaxy evolution.
