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Light and atoms get entangled Physicists have for the first time entangled two atomic quantum bits, or "qubits", that are separated by long distances. Alex Kuzmich, Brian Kennedy and colleagues at the Georgia Institute of Technology in the US did this by entangling an atomic qubit with a photon, sending the photon down an optical fibre to a neighbouring lab, and then converting the photon into another atomic qubit.
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