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Quantum key distribution for d-level systems with generalized Bell states

Vahid Karimipour·Saber Bagherinezhad·Alireza Bahraminasab
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Abstract

Using the generalized Bell states and controlled not gates, we introduce an enatanglement-based quantum key distribution (QKD) of d-level states (qudits). In case of eavesdropping, Eve's information gain is zero and a quantum error rate of (d-1)/d is introduced in Bob's received qudits, so that for large d, comparison of only a tiny fraction of received qudits with the sent ones can detect the presence of Eve.

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Vahid Karimipour, Saber Bagherinezhad, Alireza Bahraminasab. 2002-04-17. Quantum key distribution for d-level systems with generalized Bell states. https://doi.org/10.1103/physreva.65.052331

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