QKD security constraints for entangled and nonentangled quantum cryptography systems. Comparison of systems quantum channels tolerance against noise and technical imperfections.
The stability assessment of the QKD implementations in regard to quantum channel quality. Statistical data analysis of the characteristic indicators of the quality of the QKD communication.
The overview of the current status of quantum cryptograph in regard to QKD protocols and QKD implementations. The comparison of systems efficiency, stability and resistivity against noise and hacker attacks is discussed.