Archive for May, 2010
Tuesday, May 25th, 2010
In quantum teleportation two photons or ions (for example) are entangled in such a way that when the quantum state of one is changed the state of the other also changes, as if the two were still connected. This enables quantum information to be teleported if one of the photons/ions is sent some distance away.
In previous experiments the photons were confined to fiber channels a few hundred meters long to ensure their state remained unchanged, but in the new experiments pairs of photons were entangled and then the higher-energy photon of the pair was sent through a free space channel 16 km long. The researchers, from the University of Science and Technology of China and Tsinghua University in Beijing, found that even at this distance the photon at the receiving end still responded to changes in state of the photon remaining behind. The average fidelity of the teleportation achieved was 89 percent.
Sunday, May 16th, 2010
The only reason Greece is not bankrupt now is because even as its past mistakes have caught up with it and climaxed in a solvency and liquidity crisis unseen since the Lehman days, the country’s end would bring down all of Europe. If Greece would not have impaired French, German and UK banks, the country would have long been allowed to default. Yet diversion is always a good tactic: let’s bring the “speculators” into this yet again. After all it is unheard of in these turbulent Keynesian times for anyone, especially our own Fed Chairman, to own up to their endless mistakes. It is always, without exception, someone else’s fault.