Yet there's more to a quantum-based network than a transmission. Scientists struggled to crack their long sought-after goal of developing a system of interconnected units or 'repeaters' that can also store and retrieve quantum information much like classical computers do, to extend the network's reach.
"Interfacing two key devices together is a crucial step forward in allowing quantum networking, and we are really excited to be the first team to have been able to demonstrate this,"Made partly in Germany and assembled at ICL, the newly proposed system places a semiconductor quantum dot capable of emitting a single photon at a time in a cloud of hot rubidium atoms, serving as.
"This includes us, having tried this experiment twice before with different memory and quantum dot devices, going back more than five years, which just shows how hard it is to do,"study co-author Patrick Ledingham, an experimental quantum physicist from the University of Southampton in the UK.
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