That's a terrible article. Here's a physorg link: http://www.physorg.com/news/2011-07-hk-physicists-photons.html http://www.physorg.com/news/2011-07-hk-physici

That's a terrible article. Here's a physorg link: http://www.physorg.com/news/2011-07-hk-physicists-photons.html http://www.physorg.com/news/2011-07-hk-physicists-photons.ht... Here's the abstract: http://prl.aps.org/abstract/PRL/v106/i24/e243602 http://prl.aps.org/abstract/PRL/v106/i24/e243602