Quantum computer works best switched off

Quantum computer

Journal reference: Nature (vol 439, p 949)

Researchers at University of Illinois at Urbana-Champaign have built a non-running quantum computer that really works. Stay with me. Remember, this is quantum mechanics we're talking about. (A physicist colleague of mine once claimed quantum mechanics obeyed the "six beer rule": Once you've had six beers you think you understand it.)

The computer is based on routing a photon through a myriad set of mirrrors and optical devices, including a set that runs a database search "by changing the properties of the photon"

Apparently, Zeno's paradox is used (via repeated measurement) to stop the photon from actually "running" the program. Instead, it "flirts" with the program (you'll have to read the article on six beers and explain this to me).

The big advantage? "A non-running computer produces fewer errors." Now that's a claim that I find really hard to believe!

Quantum Gravity on eBay

Funniest "sponsored link" on Google so far:

quantum gravity - Google Search: "Quantum Gravity
Looking for Quantum Gravity?
Find exactly what you want today
www.eBay.com"