Danica Marsden

Author

Staff research

Liquidity Optimization in Gross Settlement Systems with Quantum Reordering: Application to TARGET2∗

Staff working paper 2026-32 Valerio Astuti, Adriano Baldeschi, Luca Bastianelli, Giuseppe Bruno, Riccardo Russo, Ajit Desai, Danica Marsden
Building on our earlier quantum algorithm, this paper shows that reordering queued payments can significantly reduce liquidity needs. The algorithm performs well on smaller payment batches, while traditional algorithms can process larger batches and deliver greater savings. Machine learning also helps identify which payment patterns offer the greatest potential for improvement.
Content Type(s): Staff research, Staff working papers JEL Code(s): C, C6, C61, C63, C8, C83, E, E4, E42, E5, E58 Research Theme(s): Models and tools, Econometric, statistical and computational methods, Money and payments, Payment and financial market infrastructures

Improving the Efficiency of Payments Systems Using Quantum Computing

Staff working paper 2022-53 Christopher McMahon, Donald McGillivray, Ajit Desai, Francisco Rivadeneyra, Jean-Paul Lam, Thomas Lo, Danica Marsden, Vladimir Skavysh
We develop an algorithm and run it on a hybrid quantum annealing solver to find an ordering of payments that reduces the amount of system liquidity necessary without substantially increasing payment delays.
Content Type(s): Staff research, Staff working papers JEL Code(s): C, C6, C61, C63, D, D8, D83, E, E4, E42, E5, E58 Research Theme(s): Money and payments, Digital assets and fintech, Payment and financial market infrastructures

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Journal publications

Staff working papers