Quantum Leap in Finance: Economic Advantages, Security, and Post-Quantum Readiness
- URL: http://arxiv.org/abs/2508.21548v1
- Date: Fri, 29 Aug 2025 12:04:08 GMT
- Title: Quantum Leap in Finance: Economic Advantages, Security, and Post-Quantum Readiness
- Authors: Gerhard Hellstern, Esra Yeniaras,
- Abstract summary: This paper provides an in-depth review of the evolving role of quantum computing in the financial sector.<n>It integrates classical quantum computing applications - such as portfolio optimization, risk analysis, derivative pricing, and Monte Carlo simulations.<n>We propose a structured four-step framework to assess the feasibility and expected benefits of implementing quantum solutions in finance.
- Score: 0.0
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: This paper provides an in-depth review of the evolving role of quantum computing in the financial sector, emphasizing both its computational potential and cybersecurity implications. Distinguishing itself from existing surveys, this work integrates classical quantum computing applications - such as portfolio optimization, risk analysis, derivative pricing, and Monte Carlo simulations with a thorough examination of blockchain technologies and post-quantum cryptography (PQC), which are crucial for maintaining secure financial operations in the emerging quantum era. We propose a structured four-step framework to assess the feasibility and expected benefits of implementing quantum solutions in finance, considering factors such as computational scalability, error tolerance, data complexity, and practical implementability. This framework is applied to a series of representative financial scenarios to identify domains where quantum approaches can surpass classical techniques. Furthermore, the paper explores the vulnerabilities quantum computing introduces to digital finance-related applications and blockchain security, including risks to digital signatures, hash functions, and randomness generation, and discusses mitigation strategies through PQC and quantum-resilient alternatives of classical digital finance tools and blockchain architectures. By addressing both quantum blockchain, quantum key distribution (QKD) as well as quantum communication networks, his review presents a more holistic perspective than prior studies, offering actionable insights for researchers, financial practitioners, and policymakers navigating the intersection of quantum computing, blockchain, and secure financial systems.
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