Eavesdropping without quantum memory

Abstract

In quantum cryptography the optimal eavesdropping strategy requires that the eavesdropper uses quantum memories in order to optimize her information. What happens if the eavesdropper has no quantum memory? It is shown that the best strategy is actually to adopt the simple intercept/resend strategy.

9 pages LaTeX, 3 figures

References in corpus (3)

• Intercept-resend attacks in the Bennett-Brassard 1984 quantum key distribution protocol with weak coherent pulses
• Quantum state targeting
• From Quantum State Targeting to Bell Inequalities

Cited by in corpus (6)

• The Security of Practical Quantum Key Distribution
• Robustness of quantum key distribution with discrete and continuous variables to channel noise
• Asymptotically Optimal prepare-measure Quantum Key Distribution Protocol
• Optimal eavesdropping on QKD without quantum memory
• Independent Attacks in Imperfect Settings; A Case for A Two Way Quantum Key Distribution Scheme
• Security of Device-independent Quantum Key Distribution under Sequential Attack