{"ID":2845749,"CreatedAt":"2026-06-01T04:54:23.091178241Z","UpdatedAt":"2026-06-01T04:54:23.091178241Z","DeletedAt":null,"paper_url":"https://arxiv.org/abs/2511.03359","arxiv_id":"2511.03359","title":"Universal Quantum Computer Simulation of 50 Qubits on Europe`s First Exascale Supercomputer Harnessing Its Heterogeneous CPU-GPU Architecture","abstract":"We have developed a new version of the high-performance Jülich universal quantum computer simulator (JUQCS-50) that leverages key features of the GH200 superchips as used in the JUPITER supercomputer, enabling simulations of a 50-qubit universal quantum computer for the first time. JUQCS-50 achieves this through three key innovations: (1) extending usable memory beyond GPU limits via high-bandwidth CPU-GPU interconnects and LPDDR5 memory; (2) adaptive data encoding to reduce memory footprint with acceptable trade-offs in precision and compute effort; and (3) an on-the-fly network traffic optimizer. These advances result in a 16.6-fold speedup over the previous 48-qubit record on the K computer","short_abstract":"We have developed a new version of the high-performance Jülich universal quantum computer simulator (JUQCS-50) that leverages key features of the GH200 superchips as used in the JUPITER supercomputer, enabling simulations of a 50-qubit universal quantum computer for the first time. JUQCS-50 achieves this through three...","url_abs":"https://arxiv.org/abs/2511.03359","url_pdf":"https://arxiv.org/pdf/2511.03359v3","authors":"[\"Hans De Raedt\",\"Jiri Kraus\",\"Andreas Herten\",\"Vrinda Mehta\",\"Mathis Bode\",\"Markus Hrywniak\",\"Kristel Michielsen\",\"Thomas Lippert\"]","published":"2025-11-05T10:56:00Z","proceeding":"quant-ph","tasks":"[\"quant-ph\",\"cs.DC\",\"physics.comp-ph\"]","methods":"[]","has_code":false}