Quantum repeaters: First quantum information transfer among photons originating from two different quantum dots

https://www.eurekalert.org/news-releases/1106475

"non- quantum fiber-optic has amplifier/ repeater every ~50 km, but quantum cannot be copied/ amplified without destroying data, overcome catching signal/ teleporting to next node rather than amplifying... interacting photons must be same color (frequency)/ timing, achieved via quantum dots (acting like artificial atoms) as quantum frequency converters erasing even minimal frequency differences... quantum superposition instantly transferred to 10m (future: more) distant half of entangled pair... >70% success rate"