Efficient multi-basis quantum position verification secure against generalized adversaries
Abstract
Quantum position verification (QPV) enables multiple verifiers to certify a prover’s location using quantum communication and physical assumptions. With experimental demonstrations of QPV becoming increasingly feasible, enhancing the practicality and security of QPV protocols is more important than ever. In this work, we make three key contributions toward this goal. First, we introduce a robust QPV protocol in which the verifier’s state preparation is independent of channel loss, improving reliability in real-world conditions. Second, we refine existing security analysis techniques to bolster protocol resilience against experimental imperfections. Third, we identify and address some implicit assumptions present in existing security analyses, providing a framework to eliminate such assumptions. Additionally, as an example of QPV application beyond location verification, we illustrate how QPV can be leveraged for authenticating classical communication in quantum key distribution.
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BibTeX
@article{kon2026efficient,
title = {{Efficient multi-basis quantum position verification secure against generalized adversaries}},
author = {Wen Yu Kon and Ignatius William Primaatmaja and Kaushik Chakraborty and Charles Lim},
journal = {npj Quantum Information},
year = {2026},
month = oct,
doi = {10.1038/s41534-026-01325-9},
url = {https://www.nature.com/articles/s41534-026-01325-9},
note = {CC BY 4.0},
}
RIS
TY - JOUR
TI - Efficient multi-basis quantum position verification secure against generalized adversaries
AU - Wen Yu Kon
AU - Ignatius William Primaatmaja
AU - Kaushik Chakraborty
AU - Charles Lim
PY - 2026
DA - 2026/10/31
JO - npj Quantum Information
DO - 10.1038/s41534-026-01325-9
UR - https://www.nature.com/articles/s41534-026-01325-9
AB - Quantum position verification (QPV) enables multiple verifiers to certify a prover’s location using quantum communication and physical assumptions. With experimental demonstrations of QPV becoming increasingly feasible, enhancing the practicality and security of QPV protocols is more important than ever. In this work, we make three key contributions toward this goal. First, we introduce a robust QPV protocol in which the verifier’s state preparation is independent of channel loss, improving reliability in real-world conditions. Second, we refine existing security analysis techniques to bolster protocol resilience against experimental imperfections. Third, we identify and address some implicit assumptions present in existing security analyses, providing a framework to eliminate such assumptions. Additionally, as an example of QPV application beyond location verification, we illustrate how QPV can be leveraged for authenticating classical communication in quantum key distribution.
SN - 2056-6387
ER -