New Method Generates Nearly Indistinguishable Photons for Quantum Communication
5 Articles
5 Articles
New method generates nearly indistinguishable photons for quantum communication
Working in close collaboration, researchers from Paderborn University, the University of Basel and Ruhr University Bochum have made a breakthrough in quantum communication. In their recently published paper in the journal Physical Review Letters, they demonstrate how special semiconductor nanostructures can be used to generate individual photons and pairs of photons that are almost perfectly identical. These "indistinguishable" particles form th…
In close collaboration, researchers from the University of Paderborn, the University of Basel and the University of Ruhr in Bochum have made a breakthrough in quantum communication. In their article recently published in the journal Physical Review Letters, they demonstrate how special semi-conducting nanostructures can be used to generate individual photons [...]
Photons from a biexcitone cascade are usually linked in time, which limits their indistinguishability. Researchers have now succeeded in specifically accelerating the first decay in a semiconductor quantum point with an optical resonator. As a result, they achieved raw interference visibilitys of 90 ± 2 and 80 ± 6 per cent for the two successively generated photons. Paderborn (Germany). Photons are suitable [...] The article New method delivers …
Cavity-controlled quantum dots deliver nearly identical photons for quantum
Researchers in Germany and Switzerland have used cavity-controlled biexciton decay in semiconductor quantum dots to generate photon pairs that are roughly 90 per cent indistinguishable, a major leap toward reliable quantum communication sources.
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