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arXiv · 2507.12020

Channel capacity of small modular quantum networks in the ultrastrongly coupled regime

Salvatore Alex Cordovana·Luigi Giannelli·Nicola Macrì·Giuliano Benenti·Elisabetta Paladino·Giuseppe A. Falci
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Abstract

We investigate state-transfer in modular quantum computer architectures exploiting the ultrastrong coupling regime of interaction between quantum processing units and ICs. We show that protocols based on adiabatic coherent transport may achieve near-ideal single-letter quantum capacity and robustness against parametric fluctuations suppressing leakage induced by the dynamical Casimir effect.

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Salvatore Alex Cordovana, Luigi Giannelli, Nicola Macrì, Giuliano Benenti, Elisabetta Paladino, Giuseppe A. Falci. 2025-07-16. Channel capacity of small modular quantum networks in the ultrastrongly coupled regime. https://doi.org/10.1140/epjs%2Fs11734-025-02020-0

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