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Chinese scientists teleport single photon from Earth to satellite

Researchers in China have teleported an object from the ground to a satellite orbiting more than 500 kilometers above. The object, which is a photon, travelled from Gobi desert to a satellite called ‘Micius’, named after an ancient Chinese philosopher who died in 391 B.C. The rocket placed Micius in a Sun-synchronous orbit so that it passes over the same point on Earth at the same time each day.

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Researchers in China have teleported an object from the ground to a satellite orbiting more than 500 kilometers above. The object, which is a photon, travelled from Gobi desert to a satellite called ‘Micius’, named after an ancient Chinese philosopher who died in 391 B.C. The rocket placed Micius in a Sun-synchronous orbit so that it passes over the same point on Earth at the same time each day.

MIT Technology Review explained that Micius is a highly sensitive photon receiver that can detect the quantum states of single photons fired from the ground. This should allow scientists to test the technological building blocks for various quantum feats such as entanglement, cryptography and teleportation.

The team created the first satellite-to-ground quantum network, in the process smashing the record for the longest distance over which entanglement has been measured. And they have used this quantum network to teleport the first object from the ground to orbit.

The Chinese team said, “Long-distance teleportation has been recognized as a fundamental element in protocols such as large-scale quantum networks and distributed quantum computation. Previous teleportation experiments between distant locations were limited to a distance on the order of 100 kilometers, due to photon loss in optical fibers or terrestrial free-space channels. We report the first quantum teleportation of independent single-photon qubits from a ground observatory to a low Earth orbit satellite—through an up-link channel— with a distance up to 1400 km.”

               

 

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