Quantum technologies

After the first quantum revolution, which brought us modern electronic circuits, solar cells, atomic clocks, lasers, magnetic resonance imaging, electron and tunneling microscopes, etc., We are now witnessing a second quantum revolution, which will replace Shannon’s information theory with the broader laws of Quantum Information and Communication Technology (QICT), which will be integrated into the architectures of modern telecommunications networks to ensure operational performance, fault tolerance and cyber-security. The aim of this lecture is to present the second quantum revolution and its achievements, such as quantum computing and quantum encryption, in a popular way. In the first hour, after motivational challenges, a brief history of quantum physics will be presented. Basic QICT concepts such as the quantum bit (qbit) and technical solutions for its implementation will be defined. Furthermore, protocols for the implementation of quantum encryption will be presented.