Intercept-resend attack on six-state quantum key distribution over collective-rotation noise channels |
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Authors: | Kevin Garapo Mhlambululi Mafu Francesco Petruccione |
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Institution: | 1.Centre for Quantum Technology, School of Chemistry and Physics, University of KwaZulu-Natal, P/Bag X54001 Durban 4000, South Africa;2.Department of Physics and Astronomy, Botswana International University of Science and Technology, P/Bag 16, Palapye, Botswana;3.National Institute for Theoretical Physics (NITheP), KwaZulu-Natal, South Africa |
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Abstract: | We investigate the effect of collective-rotation noise on the security of the six-state quantum key distribution. We study the case where the eavesdropper, Eve, performs an intercept-resend attack on the quantum communication between Alice, the sender, and Bob, the receiver. We first derive the collective-rotation noise model for the six-state protocol and then parameterize the mutual information between Alice and Eve. We then derive quantum bit error rate for three interceptresend attack scenarios. We observe that the six-state protocol is robust against intercept-resend attacks on collective rotation noise channels when the rotation angle is kept within certain bounds. |
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Keywords: | six states quantum key distribution security collective-rotation noise |
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