The catch: it's no small feat to generate that powerful of a magnetic field; it's far beyond our current technological capabilities. But in the earliest moments of our universe, Smolyaninov proposes, fractions of a second after the Big Bang, there would have been magnetic fields of that magnitude.
And that means that there should be evidence of all this focusing and trapping of light through a "superlens" in the universe we see today, imprinted onto its large-scale structure. Ah, if we only had instruments capable of detecting those imprints from those few fractions of a second of the birth of the cosmos.
The Cosmic Microwave Background Radiation - that faint afterglow leftover from the Big Bang - only lets us see as far as 380,000 years after the Big Bang. And by measuring the abundance of light elements, physicists have been able to roll back the clock to within a few seconds after the Big Bang. But that's where our "eyes" fail us, at least to date.
There's always a caveat, isn't there? But it's an interesting paper, nonetheless, and a nice addition to Smolyaninov's growing body of work in this area.