They did.   See article below.

Physicists Demonstrate Record Breaking Long-Distance Quantum
Entanglement in Space ^
Posted on 9/2/2017, 8:35:07 PM by TBP


Chinese physicists managed to demonstrate long-distance quantum
entanglement in space, breaking previous records. This development,
made possible by a novel method, could lead to improved information
storage and transfer in the future. SPOOKY ACTION GETS TO SPACE

When it comes to weird science stuff, quantum entanglement is probably
near the top of the list, especially back in the days when Einstein
referred to it as that “spooky action at a distance.” Physicists have
since demonstrated the “spooky” phenomenon to be possible, but now
they want to extend its reach. A new study shows it’s possible for
quantum entanglement to span far longer distances than previously

“We have demonstrated the distribution of two entangled photons from a
satellite to two ground stations that are 1,203 kilometers [748 miles]
apart,” lead author Juan Yin, physicist at the Science and Technology
University of China in Shanghai, explained in a research paper
published in the journal Science. The previous record for entanglement
distribution reached only 100 kilometers (62 miles).

Yin’s team used the Micius, the world’s first quantum-enabled
satellite which China launched in 2016, to transmit entangled photons
to several ground stations separated by long distances. They managed
to achieve this feat by using laser beams to prevent the light
particles from getting lost as they traveled.

“The result again confirms the nonlocal feature of entanglement and
excludes the models of reality that rest on the notions of locality
and realism,” Yin and his colleagues wrote.


Though quantum entanglement is incredibly complex, it’s possible to
explain it in simple terms. Two or more particles are entangled or
linked when a change in one’s state or properties instantaneously
affects the other’s. What makes this stranger is that this link works
regardless of distance. This phenomenon becomes particularly useful in
storing information — as in the case of using quantum bits (qubits) in
quantum computing.

By proving that quantum entanglement can be maintained in space over
such a long distance, this work paves the way for long-distance
satellite quantum communication and maybe even realize the
possibilities for quantum teleportation. “Long-distance entanglement
distribution is essential for the testing of quantum physics and
quantum networks,” Yin’s team wrote.

Advances in quantum cryptography, which rely heavily on extending
entanglement, could change the way information is stored and
transferred in the future — opening up applications in improved
security in communication and even payment systems.

On 9/3/17, H LV <> wrote:
> Why can't one build a detector sensitive to the motion of a group wave so
> that it would be possible to send a signal faster than c?
> Harry

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