Modeling and simulation of schematic quantum cryptography system based entangled photons

Abstract EN

The paper investigates many problems in quantum systems by using the modeling of optical components using Jones matrices.

These methods give high flexibility to choose perfect model and ideal measurements base of Alice and Bob.

The simulated source uses polarization entangled photons from spontaneous parametric down-conversion.

The proposed model of Ekert's quantum cryptography protocol, is also simulated based on modeling the optical components by Jones matrices.

Bell's inequality is computed to detect the eavesdropper.

The results show the effect of the eavesdropper on the Bit Error Rate (BER) and S factor of Bell's inequality.

The eavesdropper affects more on the results of S and BER when he doesn't know the base measurements of Alice and Bob.