  This article demonstrates a new compression scheme that has the potential to
compress a high energy pulse as high as a few hundred Joules in a pulse as
short as one optical cycle at 0.8{\mu}m making a true ultra-relativistic
{\lambda}^3 pulse. This pulse could have a focused intensity of 10^24W/cm2 or
a0 of 1000. It could form an efficient, 10%, relativistic mirror that could
compress the pulse to the atto-zeptosecond regime, with an upshifted wavelength
of 1-10keV. This technique could be a watershed making the entry of petawatt
pulses into the exawatt and zeptosecond regime possible.
