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February 6th, 2006
Light and atoms get entangled
Abstract:
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. Meanwhile, Harald Weinfurter and co-workers at the Max-Planck Institute for Quantum Optics in Garching and the Ludwig-Maximilians University in Munich have entangled an atom with a photon at a wavelength suitable for low-loss communication over long distances.
Source:
physicsweb
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