(Harvard.edu) Harvard and Massachusetts Institute of Technology (MIT) researchers have found a way to correct for signal loss with a prototype quantum node that can catch, store and entangle bits of quantum information. The research is the missing link towards a practical quantum internet and a major step forward in the development of long-distance quantum networks.
“This demonstration is a conceptual breakthrough that could extend the longest possible range of quantum networks and potentially enable many new applications in a manner that is impossible with any existing technologies,” said Mikhail Lukin, the George Vasmer Leverett Professor of Physics and a co-director of Harvard Quantum Initiative. “This is the realization of a goal that has been pursued by our quantum science and engineering community for more than two decades.”
“This is the first system-level demonstration, combining major advances in nanofabrication, photonics and quantum control, that shows clear quantum advantage to communicating information using quantum repeater nodes. We look forward to starting to explore new, unique applications using these techniques,” said Lukin.

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