Device-independent Quantum Position Verification
Gautam A. Kavuri, Abigail Gookin, Yanbao Zhang, Joshua C. Bienfang, Honghao Fu, Yusuf Alnawakhtha, Soumyadip Patra, Dileep V. Reddy, Michael D. Mazurek, Carlos Abellán, Morgan W. Mitchell, Peter Bierhorst, Carl A. Miller, Scott Glancy, Richard P. Mirin, Martin J. Stevens, Emanuel H. Knill, Lynden K. Shalm · 2025
We propose and implement a device-independent protocol for quantum position verification against unentangled adversaries. Our experiment achieves provable localization to a 1-dimensional region that is 40.7(7) % the size of the smallest theoretical region achievable with classical protocols.