Moving information but not matter.

• Position: Quantum Teleportation - Brief article

Quantum teleportation--a method of communicating information from one location to another without physically having to move it--has been taken to a higher level by a team of scientists by using certain high-dimensional states (which they dubbed "donut" states) for teleportation. Stony Brook (N.Y.) University physicist Tzu-Chieh Wei and colleagues demonstrated that their method works, is more reliable than previous teleportation schemes, and could be a stepping stone toward building a quantum communications network.

The researchers developed entangled elementary particles--in this case photons, the smallest units of light--to transmit information through a shared pair of entangled quantum state of photons. Both the sender and receiver have one photon, one-half of each entangled pair.

In simple communication terms, the process of superdense-teleporting would involve one person to encode information in the form of a quantum state on his photon. Then the person would perform measurement on his photon and use traditional communication channels (phone or e-mail) to let the other person...