long range quantum communication tagged posts

Experimental device of quantum cryptography system. Credit: ITMO University

A novel approach to the construction of quantum communication systems for secure data exchange. The experimental device based on the results of the research is capable of transmitting single-photon quantum signals across distances of 250km or more, which is on par with other cutting edge analogues. Information security is becoming more and more of a critical issue. Contrary to algorithm-based encryption, systems that protect information by making use of quantum physics, can make data transmission immune to hacker attacks in the future. Information in a quantum channel is carried by single photons that change irreversibly once an eavesdropper attempts to intercept them...