Tomographic Quantum Cryptography Protocols are Reference Frame Independent

Abstract

We consider the class of reference frame independent protocols in d dimensions for quantum key distribution, in which Alice and Bob have one natural basis that is aligned and the rest of their frames are unaligned. We relate existing approaches to tomographically complete protocols. We comment on two different approaches to finite key bounds in this setting, one direct and one using the entropic uncertainty relation and suggest that the existing finite key bounds can still be improved.

Published version. 8 pages, 1 figure

References in corpus (4)

• Tight Finite-Key Analysis for Quantum Cryptography
• The Uncertainty Relation for Smooth Entropies
• Conjectured Strong Complementary Information Tradeoff
• Quantum communication without alignment using multiple-qubit single-photon states

Cited by in corpus (4)

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• Demonstration of a 6 State-4 State Reference Frame Independent channel for Quantum Key Distribution
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