Robustness of a quantum key distribution with two and three mutually unbiased bases

Abstract

We study the robustness of various protocols for quantum key distribution. We first consider the case of qutrits and study quantum protocols that employ two and three mutually unbiased bases. We then derive the optimal eavesdropping strategy for two mutually unbiased bases in dimension four and generalize the result to a quantum key distribution protocol that uses two mutually unbiased bases in arbitrary finite dimension.

11 pages, 2 figures

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Cited by in corpus (6)

• Symmetries in Quantum Key Distribution and the Connection between Optimal Attacks and Optimal Cloning
• Polarization ququarts
• Test of mutually unbiased bases for six-dimensional photonic quantum systems
• Simple and secure quantum key distribution with biphotons
• Biphoton Spectrum Control
• Economical realization of phase covariant devices in arbitrary dimensions