Security of Quantum Key Distribution with Entangled Qutrits

Details Security of Quantum Key Distribution with Entangled Qutrits Security of Quantum Key Distribution with Entangled Qutrits

2002-07-10

arxiv.org/abs/quant-ph/0207057v2

Phys. Rev. A 67, 012311 (2003)

Physics

Quantum Physics

9 pages original version: july 2002, replaced in january 2003 (reason: minor changes)

Scientific paper

10.1103/PhysRevA.67.012311

The study of quantum cryptography and quantum non-locality have traditionnally been based on two-level quantum systems (qubits). In this paper we consider a generalisation of Ekert's cryptographic protocol [Ekert] where qubits are replaced by qutrits. The security of this protocol is related to non-locality, in analogy with Ekert's protocol. In order to study its robustness against the optimal individual attacks, we derive the information gained by a potential eavesdropper applying a cloning-based attack.

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