The essence of quantum encryption is the transmission of information using individual light particles. For a long time, it was believed that we needed devices that produce a photon every time. However, such resources are difficult and expensive to create. In the application, lasers are used more often accidentally emitting a number of photons. This is appropriate, but reduces safety: an aggressive signal can cut some of the signal.
Professor Ronen Rapipate team proposed another decision. They used quantum spots – miniature semiconductor crystals acting as artificial atoms. With their help, you can manage how the photons spread.
Scientists developed two new methods:
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Changed Decoy Status Protocol – interrupts hacking attempts associated with the multiple transmission of photons.
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Protocol Signal Cleaning – Filters in real time “extra” photons only leave only one.
Experiments have shown that these approaches are more reliable and that you allow you to transfer data more than lasers -based traditional methods. The main advantage is that such technologies can now be introduced using existing equipment for many laboratories.
Source: Ferra
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