“Beam me up, Scotty” – even if Captain Kirk supposedly never said this exact phrase, it remains a popular catch-phrase to this day. Whenever the chief commander of the television series starship USS Enterprise (NCC-1701) wanted to go back to his control centre, this command was enough to take him back to the control centre instantly – travelling through the infinity of outer space without any loss of time.
But is all of this science fiction that was thought up in the 1960s? Not quite: Physicists are actually capable of beaming–or “teleporting” as it is called in technical language – if not actual solid particles at least their properties.
They used a special form of laser beams in the experiment. “As can be done with the physical states of elementary particles, the properties of light beams can also be entangled,” explains Dr Marco Ornigotti, a member of Prof. Szameit’s team. For physicists, “entanglement” means a sort of codification. “You link the information you would like to transmit to a particular property of the light,” clarifies Ornigotti who led the experiments for the study that was now presented.
In their particular case, the physicists have encoded some information in a particular polarisation direction of the laser light and have transmitted this information to the shape of the laser beam using teleportation. “With this form of teleportation, we can, however, not bridge any given distance,” admits Szameit. “On the contrary, classic teleportation only works locally.” But just like it did at the starship USS Enterprise or in quantum teleportation, the information is transmitted fully and instantly, without any loss of time. And this makes this kind of information transmission a highly interesting option in telecommunication for instance, underlines Szameit.
Chirp Microsystems waves on touch-free future
Within just a few years, we’ve got used to controlling devices by swiping, scrolling or tapping our fingers on a touch screen. But soon you might not even have to touch anything at all to check your email or play a video – just wave your hand in the air, thanks to ultrasonic technology from Chirp Microsystems, a startup company founded in 2013 by researchers from UC Davis and UC Berkeley.
“Nobody is quite doing what we’re doing right now,” Horsley said.