Researchers in China have successfully transmitted information using quantum communication through sea water. In the proof-of-concept experiment, information was sent across a 10.8-foot tank of seawater. The researchers believe they will be able to apply the technique to distances up to half a mile in open water, but this may be a challenge as water absorbs light. While the concept of quantum teleportation across distances via optical fiber or open space is a prevalent area of research with regular advances announced, no know instance has occurred in water. This is in part because of the scattering that occurs in water. To overcome scattering, the researchers shot a beam of light through a crystal to create the pair of entangled photons. Communication between the two particles was accurate more than 98 percent of the time.
