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.
Working in close collaboration, researchers from Paderborn University, the University of Basel and Ruhr University Bochum have made a breakthrough in quantum communication.
The short version
- 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 the basis for quantum entanglement and quantum interference.
- This article has been reviewed according to Science X's editorial process and policies .
What happened
Editors have highlighted the following attributes while ensuring the content's credibility: In quantum information processing, photons are ideal carriers of information. A team of doctoral candidates from Basel and Paderborn has now solved this problem using a process known as "biexciton decay" in semiconductor quantum dots within an optical resonator.
Why it matters
This is a process in which a molecule consisting of two bound excitons (each a pair comprising an electron and an electron hole) decays, leaving behind a single exciton and a photon.
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