That's gotta be a piss-take, doesn't it? The discovery was made by 2 professors, Mikhail Lukin and Vladan Vuletic. Lukin and Vladan. Luke and Vader? What an awesome coincidence of like-sounding names if nothing else.
probably not a prank. both scientists have several publications in Nature.
perhaps the analogy to a "lightsabre" may be more for effect...and makes a good headline?