A quantum state of light was successfully teleported through more than 30 kilometers (around 18 miles) of fiber optic cable amid a torrent of internet traffic – a feat of engineering once considered impossible.
Watch these videos that explain the answer. Basically, the problem is that you can only use this to convey random information , which would be indistinguishable from not sending anything at all.
Watch these videos that explain the answer. Basically, the problem is that you can only use this to convey random information , which would be indistinguishable from not sending anything at all.
https://youtu.be/0xI2oNEc1Sw
https://youtu.be/BLqk7uaENAY