Author

Ulrik L. Andersen

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Preprint Sep 2026

Efficient Simulation of Hybrid Continuous- and Discrete-Variable Quantum Circuits via Gaussian Decompositions

Hybrid quantum systems combining discrete-variable (DV) and continuous-variable (CV) subsystems arise across a broad range of physical platforms and enable quantum information processing beyond purely qubit-based designs. Their classical simulation, however, is challenging since computational costs of both CV and DV sy...

Kazufumi Tanji, Dot Belin Pio, Shohei Kiryu et al. · 0 citations

Preprint Aug 2026

Finite-energy GKP-QPC architectures for photonic quantum memories and repeaters

Photonic quantum networks require error-correction architectures that remain useful with finite-energy bosonic states, pure-loss fiber transmission, and explicit resource accounting. In this light, we study a concatenated architecture in which each physical rail is a finitely squeezed Gottesman--Kitaev--Preskill (GKP)...

Kaustav Chatterjee, Ulrik L. Andersen · 0 citations

Preprint Sep 2026

The logical set of Gaussian states under the stabilizer subsystem decomposition

Universal quantum computation requires non-Gaussianity in continuous-variable systems and non-stabilizerness in discrete-variable systems. Yet, mapping a Gaussian state into the Gottesman-Kitaev-Preskill logical subspace can yield a logical qubit with non-stabilizer resources. To understand how the continuous-variable...

S. Zamora, Kaustav Chatterjee, Ulrik L. Andersen et al. · 0 citations