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arXiv · 2502.04125

Towards experimental demonstration of quantum position verification using true single photons

Kirsten Kanneworff·Mio Poortvliet·Dirk Bouwmeester·Rene Allerstorfer·Philip Verduyn Lunel·Florian Speelman·Harry Buhrman·Petr Steindl·Wolfgang Löffler
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Abstract

The geographical position can be a good credential for authentication of a party, this is the basis of position-based cryptography - but classically this cannot be done securely without physical exchange of a private key. However, recently, it has been shown that by combining quantum mechanics with the speed of light limit of special relativity, this might be possible: quantum position verification. Here we demonstrate experimentally a protocol that uses two-photon Hong-Ou-Mandel interference at a beamsplitter, which, in combination with two additional beam splitters and 4 detectors is rendering the protocol resilient to loss. With this we are able to show first results towards an experimental demonstration of quantum position verification.

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Kirsten Kanneworff, Mio Poortvliet, Dirk Bouwmeester, Rene Allerstorfer, Philip Verduyn Lunel, Florian Speelman, Harry Buhrman, Petr Steindl, Wolfgang Löffler. 2025-02-06. Towards experimental demonstration of quantum position verification using true single photons. https://doi.org/10.1088/2058-9565%2Fadf2da

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