It might only be wave packets of light but scientists at the University of Tokyo have completed the first ever teleportation of a complex set of quantum information from one point to another.
Where this gets exciting, and makes Schrodinger’s cat feel a little safer, it that it will make possible high-speed, high-fidelity transmissions of volumes of information via communication networks.
Professor Elanor Huntington, of the School of Engineering and Information Technology at UNSW’s Canberra campus, explains that teleportation – the transfer of quantum information from one location to another using normal, “classical” communications – is a fundamental quantum communication technique.
“It relies on having two things,” she said.
“One is the normal fibre-optic internet or even copper cables, and the other is a shared resource between the sender and the receiver, that could have been shared at any time in the past: we call that entanglement.”
Professor Huntington says the idea of quantum teleportation has been around for about 10 years, but has been difficult to put into practice.
“There used to be two ways of doing teleportation and both had their limitations,” she said.
“One was quite fast, but had a limited probability of succeeding. The other way of doing it was quite slow, but had a very good probability of working.
“What we’ve done is managed to get it both fast and good quality.”
via ABC Australia
Now if we could just get that as the next generation replacement for broadband we’d be talking some serious high-speed Internet.