Cloud-based Semi-Quantum Money
Yichi Zhang, Siyuan Jin, Yuhan Huang, Bei Zeng, Qiming Shao

TL;DR
This paper proposes a cloud-based semi-quantum money scheme that minimizes quantum resource reliance by using classical systems and semi-honest quantum clouds, enhancing practicality and security in quantum currency systems.
Contribution
It introduces a novel semi-quantum money scheme leveraging cloud-based quantum resources, reducing quantum requirements and improving feasibility over previous quantum money models.
Findings
Scheme relies on semi-honest quantum clouds for security.
Reduces quantum resource dependence to only the cloud.
Includes security analysis and resource estimation.
Abstract
In the 1970s, Wiesner introduced the concept of quantum money, where quantum states generated according to specific rules function as currency. These states circulate among users with quantum resources through quantum channels or face-to-face interactions. Quantum mechanics grants quantum money physical-level unforgeability but also makes minting, storing, and circulating it significantly challenging. Currently, quantum computers capable of minting and preserving quantum money have not yet emerged, and existing quantum channels are not stable enough to support the efficient transmission of quantum states for quantum money, limiting its practicality. Semi-quantum money schemes support fully classical transactions and complete classical banks, reducing dependence on quantum resources and enhancing feasibility. To further minimize the system's reliance on quantum resources, we propose a…
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Taxonomy
TopicsFinancial Markets and Investment Strategies · Complex Systems and Time Series Analysis
