There is a version of Ubuntu coming out for mobile devices and some people have wondered whether or not it could be ported to the tablet, but the general consensus was "No it can't" Besides, Ubuntu is fundamentally different from Ubuntu mobile.

However, since the source code for that project is available, one would hope it could be compiled and tweaked for the N8x0. So, in theory, yes you could make that run on your tablet.

Hope this helps