2025-08-01
Towards experimental demonstration of quantum position verification using single photons
Publication
Publication
Quantum Science and Technology , Volume 10 - Issue 4 p. 045004:1- 045004:10
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. 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 (QPV). 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 four detectors is rendering the protocol resilient to loss. With this, we are able to show first results towards an experimental demonstration of QPV.
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| doi.org/10.1088/2058-9565/adf2da | |
| Quantum Science and Technology | |
| Quantum Software Consortium | |
| Organisation | Centrum Wiskunde & Informatica, Amsterdam (CWI), The Netherlands |
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Kanneworff, K., Poortvliet, M., Bouwmeester, D., Allerstorfer, R., Verduyn Lunel, P., Speelman, F., … Löffler, W. (2025). Towards experimental demonstration of quantum position verification using single photons. Quantum Science and Technology, 10(4), 045004:1–045004:10. doi:10.1088/2058-9565/adf2da |
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