Year: 2018
Type: article
Abstract: A quantum money scheme enables a trusted bank to provide untrusted users with verifiable quantum banknotes that cannot be forged. In this work, we report a proof-of-principle experimental demonstration of the preparation and verification of unforgeable quantum banknotes. We employ a security analysis that takes experimental imperfections fully into account. We measure a total of $3.6\ifmmode\times\else\texttimes\fi{}{10}^{6}$ states in one verification round, limiting the forging probability to ${10}^{\ensuremath{-}7}$ based on the security analysis. Our results demonstrate the feasibility of preparing and verifying quantum banknotes using currently available experimental techniques.
Source: Physical Review A
Institutions: University of Science and Technology of China, Centre for Quantum Technologies, National University of Singapore, Heriot-Watt University, Chinese Academy of Sciences, Shanghai Institute of Microsystem and Information Technology, State Key Laboratory of Functional Materials for Informatics
Language: English
Subfield: Artificial Intelligence
Field: Computer Science
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2754465331