Generalized Svetlichny Inequalities as a Cross-Platform Benchmark for Quantum Processors
Abstract
A cross-platform benchmark should be device-independent yet sensitive to imperfections accumulated during execution. Building on prior work, we formulate and validate a protocol through demonstrations based on generalized Svetlichny inequality violations (a simulation, rather than a loophole-free certification, of multipartite nonlocality) for larger subsystem sizes. We apply it unchanged to three processors, the trapped-ion Marmot and IBEX Q1 (both manufactured by AQT) and the superconducting Euro-Q-Exa System 1 (IQM), using identical GHZ-state circuits with fixed theoretical measurement settings from N=2 to N=10 qubits. Both trapped-ion processors sustain violations up to ten qubits, while the superconducting processor loses them beyond six qubits under unmitigated (raw) conditions; readout-error mitigation recovers violations up to eight qubits, with a substantial fraction of the degradation attributable to measurement imperfections. These processors provide a heterogeneous testbed for validating the protocol's cross-platform applicability and discriminating power, demonstrating its practicality as a common framework for assessing collective quantum performance.
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BibTeX
@misc{arango2026generalized,
title = {{Generalized Svetlichny Inequalities as a Cross-Platform Benchmark for Quantum Processors}},
author = {Andrés Camilo Granda Arango and Giuseppe Sergioli and Luigi Iapichino and Tobias Valentin Bauer and Carlo Cuccu and Roberto Giuntini},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2610.24213},
eprint = {2610.24213},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2610.24213},
}
RIS
TY - UNPB
TI - Generalized Svetlichny Inequalities as a Cross-Platform Benchmark for Quantum Processors
AU - Andrés Camilo Granda Arango
AU - Giuseppe Sergioli
AU - Luigi Iapichino
AU - Tobias Valentin Bauer
AU - Carlo Cuccu
AU - Roberto Giuntini
PY - 2026
DA - 2026/10/16
PB - arXiv
DO - 10.48550/arxiv.2610.24213
UR - https://arxiv.org/abs/2610.24213
AB - A cross-platform benchmark should be device-independent yet sensitive to imperfections accumulated during execution. Building on prior work, we formulate and validate a protocol through demonstrations based on generalized Svetlichny inequality violations (a simulation, rather than a loophole-free certification, of multipartite nonlocality) for larger subsystem sizes. We apply it unchanged to three processors, the trapped-ion Marmot and IBEX Q1 (both manufactured by AQT) and the superconducting Euro-Q-Exa System 1 (IQM), using identical GHZ-state circuits with fixed theoretical measurement settings from N=2 to N=10 qubits. Both trapped-ion processors sustain violations up to ten qubits, while the superconducting processor loses them beyond six qubits under unmitigated (raw) conditions; readout-error mitigation recovers violations up to eight qubits, with a substantial fraction of the degradation attributable to measurement imperfections. These processors provide a heterogeneous testbed for validating the protocol's cross-platform applicability and discriminating power, demonstrating its practicality as a common framework for assessing collective quantum performance.
ER -