The security angle: post-quantum finance and QKD
The quantum transition is also a security problem, and not only for finance: it concerns every industry that holds long-lived confidential data. In finance it is particularly acute. Fault-tolerant quantum computers that are expected to accelerate optimization will, in time, break the public-key cryptography schemes that protect payments, settlement and confidential data. The timeline is uncertain, but the threat is already present: encrypted data harvested today can be stored and decrypted once such a machine exists. Standards bodies and central banks have already begun preparing the migration to post-quantum cryptography: the Bank for International Settlements, with the Banque de France and the Bundesbank, has tested this shift through Project Leap. This is where the Institute’s finance work meets its broader research on quantum technologies for information and communication.
Beyond computational aspects, quantum communication also has significant implications for finance. Quantum Key Distribution (QKD) offers key exchange that enables ultra-secure communication, which is critical for transmitting sensitive financial data.
From hype to reality: hybrid approaches today
In the near term, the use of quantum computing in finance will be focused on hybrid approaches, combining classical and quantum methods. The objective for the time being is not to achieve a quantum advantage, but to build capabilities, identify use cases, and develop an operational understanding of the technology. In the medium term, as hardware improves, one can expect more significant advances in areas such as optimization, simulation, and machine learning. At the same time, the emergence of quantum threats to existing cryptographic systems will force a transition toward post-quantum infrastructures. While claims of exponential speedups or universal quantum advantage are not operationally meaningful at this stage, experimentation with hybrid pipelines and problem reformulations already provides strategic value, both in terms of skill acquisition and algorithmic innovation.
Real-world initiatives
Several financial institutions have published the results of experiments run with quantum technology providers. They remain small in scale and rely on hybrid quantum-classical workflows, but they show where the first operational gains are being tested.
- HSBC and IBM, bond trading (2025). Using an IBM Heron quantum processor alongside classical methods, HSBC reported up to a 34% improvement in predicting the probability of winning customer quote requests in the European corporate bond market, compared with classical techniques alone. Read the HSBC announcement.
- Crédit Agricole CIB with Pasqal and Multiverse Computing (2021-2023). Two experiments, on derivatives valuation and on predicting credit rating downgrades. The second ran on a 50-qubit neutral-atom quantum processor and, according to the bank, matched the accuracy of the model used in production. Read the Crédit Agricole CIB announcement.
- JPMorgan Chase and Quantinuum, portfolio optimization (2024). JPMorgan researchers ran a hybrid quantum algorithm for linear systems (Hybrid HHL++) on Quantinuum trapped-ion computers, on two-asset portfolio problems: a test of robustness to hardware noise rather than a demonstration at practical scale. Read the JPMorgan Chase research note.
- BBVA and Multiverse Computing, dynamic portfolio optimization (2020). A proof of concept on a 52-asset portfolio over eight years of daily market data, comparing quantum, quantum-inspired and classical methods. Read the BBVA announcement.
None of these experiments yet demonstrates a durable quantum advantage in production. That is why the Institute focuses on benchmarking quantum approaches against the best classical methods.
EDHEC’s research on quantum finance
The EDHEC Quantum Institute is developing research on the application of quantum technologies in portfolio construction, asset pricing, and risk management, drawing on EDHEC’s heritage in quantitative asset and risk management built over two decades at the former EDHEC-Risk Institute. That heritage spans portfolio construction, factor investing and risk measurement, which the initiative now extends to the quantum setting.
As the quantum finance field is still in its early stages, the Institute aims to influence the direction of research and standard-setting within the industry, and to play a part in policy development and industry regulation. At a time when the ethical, legal, and social implications of quantum technologies are still being defined, it intends, through informed research and engagement, to help establish responsible frameworks for their use in finance.
The initiative is directed by Professor Lionel Martellini, Founding Director of the EDHEC Quantum Institute. Contributing researchers, research associates and the initiative’s peer-reviewed publications are listed here.
Related
Explore Quantum for Executives for leadership programs, the Institute’s research on Quantum Technologies for Information and Communication for the security dimension, and its plain-language glossary of quantum concepts.