Experimental investigation of practical unforgeable quantum money - Archive ouverte HAL Access content directly
Journal Articles npj Quantum Information Year : 2018

Experimental investigation of practical unforgeable quantum money


Wiesner's unforgeable quantum money scheme is widely celebrated as the first quantum information application. Based on the no-cloning property of quantum mechanics, this scheme allows for the creation of credit cards used in authenticated transactions offering security guarantees impossible to achieve by classical means. However, despite its central role in quantum cryptography, its experimental implementation has remained elusive because of the lack of quantum memories and of practical verification techniques. Here, we experimentally implement a quantum money protocol relying on classical verification that rigorously satises the security condition for unforgeability. Our system exploits polarization encoding of weak coherent states of light and operates under conditions that ensure compatibility with state-of-the-art quantum memories. We derive working regimes for our system using a security analysis taking into account all practical imperfections. Our results constitute a major step towards a real-world realization of this milestone protocol.

Dates and versions

hal-01671941 , version 1 (22-12-2017)



Mathieu Bozzio, Adeline Orieux, Luis Trigo Vidarte, Isabelle Zaquine, Iordanis Kerenidis, et al.. Experimental investigation of practical unforgeable quantum money. npj Quantum Information, 2018, 4 (1), ⟨10.1038/s41534-018-0058-2⟩. ⟨hal-01671941⟩
346 View
0 Download



Gmail Facebook X LinkedIn More