For the first time, scientists have successfully teleported a photon from the ground to a satellite in orbit.
It’s been 20 years since quantum scientists successfully teleported a photon over 10 miles, proving that quantum entanglement — a process that Albert Einstein called “spooky action at a distance” -- was possible.
The very unnatural phenomenon occurs when two quantum objects, such as photons, share a wave function. Since they come into existence at the exact same time and place, they share the same identity, even when separated. What happens to one happens to the other — wherever it exists.
Wouldn't quantum field theory suggest that all quanta are entangled due to all quanta being manifestations of underlying fields that exist throughout space?
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Quanta may usually be created in states with some degree of entanglement, but as they get separated and interact locally with different neighborhoods, this entanglement may easily be destroyed. Actually, one of the main technical challenges that quantum computation has been facing is precisely in being able to maintain entanglement between the qubits, which tends to be destroyed due to the environmental noise.
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