Showing posts with label thermodynamic. Show all posts
Showing posts with label thermodynamic. Show all posts

Wednesday, November 17, 2010

A solid case of entanglement

For the first time, physicists have convincingly demonstrated that physically separated particles in solid-state devices can be quantum-mechanically entangled. The achievement is analogous to the quantum entanglement of light, except that it involves particles in circuitry instead of photons in optical systems. Both optical and solid-state entanglement offer potential routes to quantum computing and secure communications, but solid-state versions may ultimately be easier to incorporate into electronic devices.

Monday, November 15, 2010

Demonic device converts information to energy

The laws of physics say that you can't get energy for nothing -- worse still, you will always get out of a system less energy than you put in. But a nanoscale experiment inspired by a nineteenth-century paradox that seemed to break those laws now shows that you can generate energy from information.