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Quantum Computer Outpaces Classics in Currency Arbitrage Solutions

10/2/2025

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Summary

Story summary

Researchers from the University of Pisa and collaborators model currency arbitrage as a Quadratic Unconstrained Boolean Optimization (QUBO) problem.
They test the QUBO on the D-Wave Advantage 2 quantum computer.
Results show quantum annealing identifies optimal solutions faster than classical methods.
Separately, researchers report hysteresis in quantum annealers, indicating memory effects and linking quantum transitions to domain-wall movement.

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Story summary

Researchers from the University of Pisa and collaborators model currency arbitrage as a Quadratic Unconstrained Boolean Optimization (QUBO) problem.
They test the QUBO on the D-Wave Advantage 2 quantum computer.
Results show quantum annealing identifies optimal solutions faster than classical methods.
Separately, researchers report hysteresis in quantum annealers, indicating memory effects and linking quantum transitions to domain-wall movement.