Poorly worded press release makes this sound better than it is
Howell's research is undoubtedly excellent and an important advance in the field, but the press release about this experiment is severely misleading. Although he has demonstrated maintaining transverse phase coherence (storing the image) while slowing a light pulse, the experiment requires repetition thousands, if not millions, of times to generate the image shown.
A fundamental property of light is that it is only detected as a particle, which means detecting one photon will give you, at most, one pixel of an image. If the wavefunction of the photon has spatial information, then multiple photons must be prepared identically and the histogram of results taken to represent the wavefunction of each photon individually. Howell did exactly this by attenuating the laser to the point that on average each pulse contained less than one photon. The real trick isn't encoding an image on a photon, it's using only one photon to get it back out again. Hopefully this will get cleared up when Howell's PRL paper actually hits print, but by then I'm guessing the media grab will be complete.