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Quantum information

The conundrum of secure positioning

Nature volume 479, pages 307308 (17 November 2011) | Download Citation

Quantum information has been suggested as a means to prove beyond doubt a person's exact spatial position. But it turns out that all attempts to solve this problem using such an approach are doomed to failure.

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Author information

Affiliations

  1. Gilles Brassard is in the Département d'informatique et de recherche opérationnelle, Université de Montréal, Montréal, Québec H3C 3J7, Canada.

    • Gilles Brassard

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Correspondence to Gilles Brassard.

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