Analysis on the intercept-resent attack in a quantum communication system with polarization drift

摘要

In this paper, we study the polarization drift problem in a practical quantum communication system. The eavesdropping efficiency, the eavesdropping QBER, and the eavesdropping information gain is well analyzed, with a comparison to the corresponding parameters in the ideal situation. We find the formulas, as well as the relation between the error rate and the drift angle.