Quantum vault stores token copies at the bank to enable secure authentication without classical side information, achieving false-negative errors below 10^{-4} and attack success below 10^{-18} for 200-token bills on IBMQ hardware.
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Ensemble quantum token protocol benchmarked on IBM processors achieves bank acceptance of forged tokens below 10^{-22} while accepting legitimate tokens above 0.999.
citing papers explorer
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Quantum Vault: Secure Token Authentication Without Classical State Information Benchmarked on IBMQ
Quantum vault stores token copies at the bank to enable secure authentication without classical side information, achieving false-negative errors below 10^{-4} and attack success below 10^{-18} for 200-token bills on IBMQ hardware.
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Ensemble-Based Quantum Token Protocol Benchmarked on IBM Quantum Processors
Ensemble quantum token protocol benchmarked on IBM processors achieves bank acceptance of forged tokens below 10^{-22} while accepting legitimate tokens above 0.999.