Allow me to not agree with your classification of the top article as "garbage." I've got from it more than from the text you linked to and I'm even less satisfied with your explanations whereas Natalie Wolchover did a rather good article. Please tell me if you have any background in physics, or what is your background?
The major thing missing from the article for me is that she didn't mention that the co-author of the most recent paper on the topic is much more known as the security researcher than as somebody who does anything related to quantum physics:
http://arxiv.org/abs/1401.4356
http://en.wikipedia.org/wiki/Ross_J._Anderson
http://www.cl.cam.ac.uk/~rja14/
He's author of (to me) very useful book "Security Engineering":
http://www.cl.cam.ac.uk/~rja14/book.html