Quantum Money with Classical Verification

TL;DR

This paper introduces a novel quantum money scheme enabling classical verification, demonstrating the first secure quantum money that does not require quantum communication for verification and is secure against adaptive adversaries.

Contribution

It presents the first secure quantum money scheme with classical verification and adaptive security, expanding practical applicability of quantum currency.

Findings

Secure quantum money scheme with classical verification

First scheme secure against adaptive adversaries

No quantum communication needed for verification

Abstract

We propose and construct a quantum money scheme that allows verification through classical communication with a bank. This is the first demonstration that a secure quantum money scheme exists that does not require quantum communication for coin verification. Our scheme is secure against adaptive adversaries - this property is not directly related to the possibility of classical verification, nevertheless none of the earlier quantum money constructions is known to possess it.