This is undoubtedly awesome.  However, you don't need hot or cold temperatures for fusion.  You just need to isolate the system from the outside thermal vibrations and chaotic RF-energy that disrupts the fragile state required to superconduct (and thus enable fusion).  NASA calls this "decoherence free subspace" but it just means quiet space.  This is exactly related to why you can't get a cell phone signal in a subway tunnel. 

If we could achieve the subway tunnel concept on a molecular level, macroscopic quantum phenomenon would be possible.  In fact, the water molecules in the microtubules of your brain actually do this, hence why we have a quantum phontonic supercomputer as a brain.