Quantum secure identification using entanglement and catalysis

Details Quantum secure identification using entanglement and catalysis Quantum secure identification using entanglement and catalysis

1999-10-15

arxiv.org/abs/quant-ph/9910072v1

Physics

Quantum Physics

7 pages; no figures

Scientific paper

I consider the use of entanglement between two parties to enable one to authenticate her identity to another over a quantum communication channel. Exploiting the phenomenon of entanglement-catalyzed transformations between pure states gives a potentially reusable entangled identification token. In analyzing this, I consider the independently interesting problem of the best possible approximation to a given pure entangled state realizable using local actions and classical communication by parties sharing a different entangled state.

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