If the Space Race characterize the 20th century , it ’s possible the Teleportation Race may qualify the twenty - first . scientist all over the world are trying to perfect teleportation techniques , for a wide variety of app including communication technology . ( Sorry , this is n’t the kind of teleportation that involves institutionalize you through a wormhole to the other side of the galaxy . ) And now , a group of investigator run by Juan Yin at the University of Science and Technology of China in Shanghai havepublished a paper on ArXivdescribing how they teleport entangled photons over a distance of 97 kilometres across a lake in China .
Over atthe Technology Review ArXiv blog , KFC has the best explanation I ’ve read of what the squad actually did . His account is worth quote at duration :
The trick these Guy have perfected is to discover a way to use a 1.3 Watt laser and some fancy optics to beam the visible radiation and receive it .
inescapably photons get lose and web is destruct in such a process . imperfectness in the optic and atmosphere turbulence account for some of these losings but the adult job is light beam widening ( they did the experimentation at an EL of about 4000 cadence ) . Since the radio beam spreads out as it travel , many of the photons merely miss the target completely .
So the most crucial advance these guy rope have made is to develop a direction mechanics using a scout laser that continue the irradiation incisively on object . As a result , they were able to teleport more than 1100 photon in 4 hour over a space of 97 kilometres .
That ’s interesting because it ’s the same channel attenuation that you ’d have to cope with when beam photons to a planet with , say , 20 centimetre optics orbiting at about 500 kilometres . “ The successful quantum teleportation over such channel loss in combining with our high - relative frequency and high - accuracy [ aiming ] technique show the feasibility of orbiter - base ultra - long - distance quantum teleportation , ” say Juan and co.
Read the authors’full scientific paper on ArXiv[viaTechnology Review ]
Laser photovia
PhysicsScienceteleportation
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