http://www.latimes.com/science/sciencenow/la-sci-sn-entangled-photons-china-20170615-htmlstory.html A Chinese LEO (Low Earth Orbit) satellite named Micius after a 5th century Chinese scientist has achieved a new entanglement telecommunication distance record of about 1,500 miles. A low bit rate channel for the entanglement test was established by means of an onboard beam splitter which targeted a pair of Earth stations separated by 1,500 miles. Applications for the system include quantum cryptography. “This is the first time you have a quantum channel between a satellite and the ground that you can actually use,” said Norbert Lütkenhaus, a professor at the Institute for Quantum Computing at the University of Waterloo in Canada who was not involved in the new work. “People have been talking about doing it for many, many years, but these guys actually did it.” The experiment highlights some of the characteristics of quantum entanglement communications that has been previously discussed in these forums. The entanglement communication achieved is as secure as communication can possibly get. Only two spot beam identified targets can make use of the entanglement for the purpose of instant telecommunication. Some considerable effort must be expended in correlating the admittedly low bit rate communication, not unlike Forward Error Correction techniques already in heavy use for most satellite telecom applications that are not entangled.