One of the best characteristics of QKD technology offers a promising unbreakable way to secure communications.
In the way that eavesdroppers are trying to attempt to intercept the quantum keys during the key exchange state is detectable by introducing and abnormal Quantum Bit Error Rate (QBER). The result may occur error rate more than a certain threshold value due to unavoidable disturbance including an imperfect system configuration, noise or eavesdropper across to the quantum