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First Object Teleported From Earth To Orbit (technologyreview.com)
Researchers in China have teleported a photon from the ground to a satellite orbiting more than 500 kilometers above. From a report: Last year, a Long March 2D rocket took off from the Jiuquan Satellite Launch Centre in the Gobi Desert carrying 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. Micius is a highly sensitive photon receiver that can detect the quantum states of single photons fired from the ground. That's important because it should allow scientists to test the technological building blocks for various quantum feats such as entanglement, cryptography, and teleportation. Today, the Micius team announced the results of its first experiments. 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've used this quantum network to teleport the first object from the ground to orbit. Teleportation has become a standard operation in quantum optics labs around the world. The technique relies on the strange phenomenon of entanglement. This occurs when two quantum objects, such as photons, form at the same instant and point in space and so share the same existence. In technical terms, they are described by the same wave function.
Outside of an arbitrary definition that says a photon is an object because we say so, a photon is most certainly not an "object" using any ordinary definition of the term or even a definition that the vast majority of physicists would use (i.e. than an "object" has mass, which photons most certainly don't have or else they would never be able to travel at light speed).
AntiFA: An abbreviation for Anti First Amendment.
...now, beam down my clothes.
Funny, I was thinking that this was one of the better summaries that I've seen on Slashdot lately. No click-bait, all the pertinent facts, and covers a subject that's actually news for nerds. The summary is plenty good enough to not have to RTFA, which should be the top criterion for all good Slashdotters!
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What it means is, that the quantum state from a particle on Site A is transferred to a particle on Site B. This involves an entangled state of two particles in A and B. Depending on the experimental set up the entangled particle in site B may be the object the quantum state is transferred to. The "teleportation" involves a measurement in Site A, and to completely transfer the quantum state to B one needs the (classical) result of this measurement at site B.
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