Chinese set new distance record for teleporting qubits.
(Phys.org) -- A team of Chinese physicists has broken the distance record for teleporting qubits, extending it from 16 to 97 kilometers. They did so, as they explain in their paper uploaded to the preprint server arXiv, using the phenomenon known as entanglement.
In this context, teleportation is used to denote the exchange of information describing the states of two separate entities without having to move any actual information through the space between them. It’s important to note that teleportation in this context does not imply that an object is actually moved from one place to another, or disassociated and re-associated as seen in Star Trek, etc.
Entanglement is where two participles are entangled, i.e. connected in a way that physicists still cannot explain, though it can be shown that whatever happens to one, happens automatically and instantaneously, to the other. Thus, if one of a pair of entangled particles were made to represent one element of a stream of data that comprised a single letter of the alphabet, for example, the other would take on that value as well, allowing for instant communication; one that would also offer a means of communicating free from the worry of eavesdropping.