March 25, 2022/
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Computers, smartphones, GPS: quantum physics has enabled many technological advances. Now she is opening up new research fields in cryptography (the art of encrypting messages) with the aim of developing highly secure telecommunications networks. However, there is an obstacle: After a few hundred kilometers within a fiber optic, the photons carrying the qubits or “quantum bits” (the information) disappear. They therefore need “repeaters”, a kind of “relay” based in part on quantum…
