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Addendum to ``Quantum key distribution without alternative measurements''

Adan Cabello
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Abstract

Recently, Zhang, Li, and Guo have proposed a particular eavesdropping attack [Phys. Rev. A {\bf 63}, 036301 (2001), quant-ph/0009042] which shows that my quantum key distribution protocol based on entanglement swapping [Phys. Rev. A {\bf 61}, 052312 (2000), quant-ph/9911025] is insecure. However, security against this attack can be attained with a simple modification. In addition, a simpler version of the protocol using four qubits is introduced.

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Adan Cabello. 2000-09-12. Addendum to ``Quantum key distribution without alternative measurements''. https://doi.org/10.1103/physreva.63.036302

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