Quantum weirdness: new entanglement distance (Introduction)

by David Turell , Saturday, June 17, 2017, 22:46 (2716 days ago) @ David Turell

From Earth to satellite:

https://www.newscientist.com/article/2134843-chinese-satellite-beats-distance-record-fo...

"Now, entanglement has been preserved in pairs of photons sent by the Chinese satellite Micius to ground stations separated by 1203 kilometres — a new record.
“It took us almost 14 years to manage this achievement,” says Jian-Wei Pan of the University of Science and Technology of China in Hefei.

"They first had to ensure that their source of entangled photons would survive the rigours of a launch and that the entangled photons wouldn’t be destroyed while traveling through about 10 kilometres of lower atmosphere, which is thick and turbulent. After successful ground-based tests of these technologies, such as using small telescopes to focus the photons to distant receivers, in August 2016 China launched Micius into orbit at an altitude of about 500 kilometres so it would take the same path over China at the same time each night.

"The next challenge was for ground stations to track the fast-moving satellite, and establish optical links to receive entangled photons. Three optical telescopes in Delingha in Tibet, and Lijiang and Nanshan in north-west China locked on to the satellite, which appeared briefly overhead once every night.

"The ground stations used adaptive optics — which is technology that can measure the turbulence of Earth’s atmosphere in real time and cancel out its blurring effects. They also used technology to filter out moonlight and light pollution from cities, to reduce the noise in the optical link to the satellite.

"For every pass of the satellite over China, which happened at night for about 275 seconds, it had to establish two such downlinks simultaneously, either between Delingha and Lijiang (1203 kilometres apart) or Delingha and Nanshan (1120 kilometres apart).

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"The team also tested the fundamentals of quantum mechanics. Einstein had argued that since quantum mechanics allows for entanglement, which he derided as “spooky action at a distance”, it must be an incomplete theory and that there must be an underlying reality to explain such weirdness. But the tests done on the entangled photons between the pairs of ground stations showed that quantum weirdness is real and cannot be explained by any Einsteinian notions of hidden reality."

Comment: the theory is the entire universe is entangled with quantum particles. they are the basis of God's reality.