Resource-Efficient Cross-Platform Verification with Modular Superconducting Devices
Kieran Dalton, Johannes Knörzer, Finn Hoehne, Yongxin Song, Alexander Flasby, Dante Colao Zanuz, Mohsen Bahrami Panah, Ilya Besedin, Jean-Claude Besse, Andreas Wallraff
DOI 10.1103/czph-xpzs · PRX Quantum
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
Large-scale quantum computers are expected to benefit from modular architectures. Validating the capabilities of modular devices requires benchmarking strategies that assess performance within and between modules. In this work, we evaluate cross-platform verification protocols, which are critical for quantifying how accurately different modules prepare the same quantum state—a key requirement for modular scalability and system-wide consistency. We demonstrate these algorithms using a six-qubit flip-chip superconducting quantum device consisting of two 3-qubit modules on a single carrier chip, with connectivity for intra- and intermodule entanglement. We examine how the resource requirements of protocols relying solely on classical communication between modules scale exponentially with qubit number, and demonstrate that introducing an intermodule two-qubit gate enables subexponential scaling in cross-platform verification. This approach reduces the number of repetitions required by a factor of 4 for three-qubit states, with greater reductions projected for larger and higher-fidelity devices.
Similar papers
High-Fidelity, High-Scalability Two-Qubit Gate Scheme for Superconducting Qubits
similarity 0.88Yuan Xu et al.
Source status unknown — claims are unverified
High-Fidelity Software-Defined Quantum Logic on a Superconducting Qudit
similarity 0.88Xian Wu et al.
Source status unknown — claims are unverified
Robust, fast, and high-fidelity composite single-qubit gates for superconducting transmon qubits
similarity 0.88Hristo G. Tonchev et al.
Source status unknown — claims are unverified
Robustness of quantum gates with hybrid spin-photon qubits in superconducting resonators
similarity 0.88A. Chiesa et al.
Source status unknown — claims are unverified
Realization of High-Fidelity Perfect Entanglers between Remote Superconducting Quantum Processors
similarity 0.87Juan Song et al.
Source status unknown — claims are unverified
Digital Coherent Control of a Superconducting Qubit
similarity 0.87E. Leonard, Jr. et al.
Source status unknown — claims are unverified