The title is very misleading IMO. There have been quite a lot of questions around D-Wave's quantum computing claims. The linked story is about a paper that sh

The title is very misleading IMO. There have been quite a lot of questions around D-Wave's quantum computing claims. The linked story is about a paper that shows that the D-Wave machine indeed shows signs of quantum entanglement. The question whether D-Wave's quantum computer can achieve non-linear speed-up WRT classical computers is still not answered (but a lack of quantum entanglement would have ruled out such a speed-up). The lack of scientific characterization of what the D-Wave machine actually does is quite odd, given that they have been selling these machines as "quantum computers" for quite some time. As other commenters have pointed out, Scott Aaronson's blog is a very good resource for scientific discussion of D-Wave's claims: http://www.scottaaronson.com/blog/?p=1400 http://www.scottaaronson.com/blog/?p=1400