TBNQuantum
Generalized Svetlichny Inequalities as a Cross-Platform Benchmark for Quantum Processors
Publication: quant-ph updates on arXiv.org
Author: Andr\'es Camilo Granda Arango, Giuseppe Sergioli, Luigi Iapichino, Tobias Valentin Bauer, Carlo Cuccu, Roberto Giuntini
Source published: 20/10/2026, 04:00:00 UTC
Briefing created: 20/10/2026, 04:23:39 UTC
Based on a feed excerpt; full article content has not been acquired. Source evidence retrieved 20/10/2026, 04:13:24 UTC.
Briefings
A new protocol using generalized Svetlichny inequalities was validated across three quantum processors: the trapped-ion Marmot and IBEX Q1 (AQT) and the superconducting Euro-Q-Exa System 1 (IQM). Both trapped-ion processors sustained violations up to ten qubits, whereas the superconducting processor lost these violations beyond six qubits under raw conditions. Readout-error mitigation recovered violations up to eight qubits, with significant degradation attributed to measurement imperfections. This benchmark serves as a cross-platform framework for assessing collective quantum performance.
Key points
- A cross-platform benchmark protocol based on generalized Svetlichny inequalities was successfully validated across three quantum processors: the trapped-ion Marmot and IBEX Q1 (manufactured by AQT) and the superconducting Euro-Q-Exa System 1 (IQM).
- Trapped-ion processors sustained quantum violations up to ten qubits, while the superconducting processor lost these violations beyond six qubits under unmitigated raw conditions.
Context
This research provides a cross-platform benchmark for quantum processors, utilizing generalized Svetlichny inequalities to simulate multipartite nonlocality. The protocol is designed to be device-independent yet sensitive to imperfections accumulated during execution, offering a practical framework for assessing collective quantum performance across different hardware platforms.
Limitations
The study relies on simulation data rather than a loophole-free certification. Readout-error mitigation recovers violations up to eight qubits, with substantial degradation attributable to measurement imperfections. The evidence is limited to the specific processors and qubit counts tested (N=2 to N=10) without further validation on other hardware or error correction protocols.
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