Towards experimental demonstration of quantum position verification using single photons

Quantum Science and Technology, vol. 10, pp. 045004

Abstract

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. 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.

Authors 9

1. Kirsten N. Kanneworff corresponding Aachen Leiden Institute of Physics, Leiden

   Leiden University

   Affiliation as printed

   Leiden Institute of Physics, Leiden, The Netherlands

2. Mio Poortvliet corresponding Aachen Leiden Institute of Physics, Leiden

   Leiden University

   Affiliation as printed

   Leiden Institute of Physics, Leiden, The Netherlands

3. Dirk Bouwmeester corresponding Aachen Leiden Institute of Physics, Leiden

   Leiden University · University of California, Santa Barbara

   Affiliation as printed

   Department of Physics, University of California, Santa Barbara, CA, United States of America

   Leiden Institute of Physics, Leiden, The Netherlands

4. Rene Allerstorfer corresponding

   Centrum Wiskunde & Informatica · QuSoft

   Affiliation as printed

   CWI, Amsterdam, The Netherlands

   QuSoft, Amsterdam, The Netherlands

5. Philip Verduyn Lunel corresponding

   Centre National de la Recherche Scientifique · Centrum Wiskunde & Informatica · Sorbonne Université · QuSoft · LIP6

   Affiliation as printed

   CWI, Amsterdam, The Netherlands

   QuSoft, Amsterdam, The Netherlands

   Sorbonne Université, CNRS, LIP6, Paris, France

6. Florian Speelman corresponding

   QuSoft · University of Amsterdam

   Affiliation as printed

   QuSoft, Amsterdam, The Netherlands

   University of Amsterdam, Amsterdam, The Netherlands

7. Harry Buhrman corresponding

   QuSoft · Quantinuum (United Kingdom) · University of Amsterdam

   Affiliation as printed

   QuSoft, Amsterdam, The Netherlands

   Quantinuum, London, United Kingdom

   University of Amsterdam, Amsterdam, The Netherlands

8. Petr Steindl corresponding Aachen Leiden Institute of Physics, Leiden

   Leiden University

   Affiliation as printed

   Leiden Institute of Physics, Leiden, The Netherlands

9. W. Löffler corresponding Aachen Leiden Institute of Physics, Leiden

   Leiden University

   Affiliation as printed

   Leiden Institute of Physics, Leiden, The Netherlands