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arXiv · 2504.18141

Evaluation of Distimation's Real-world Performance on a Superconducting Quantum Computer

Hikaru Yokomori·Marii Koyama·Naphan Benchasattabuse·Michal Hajdušek·Shota Nagayama·Rodney Van Meter
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Abstract

Quantum state estimation plays a crucial role in ensuring reliable creation of entanglement within quantum networks, yet conventional Quantum State Tomography (QST) methods remain resource-intensive and impractical for scaling. To address these limitations, we experimentally validate Distimation, a novel distillation-based protocol designed for efficient Bell-diagonal state estimation. Using IBM Quantum simulators and hardware, we demonstrate that Distimation accurately estimates Bell parameters under simulated and real-world noise conditions, but also demonstrating limitations with operational noise and number of available shots. Additionally, we simulate an asymmetric-fidelity Bell pair scenario via Measurement-Based Quantum Computation (MBQC) to further validate Distimation under realistic network conditions. Our results establish Distimation as a viable method for scalable, real-time entanglement monitoring in practical quantum networks.

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Hikaru Yokomori, Marii Koyama, Naphan Benchasattabuse, Michal Hajdušek, Shota Nagayama, Rodney Van Meter. 2025-04-25. Evaluation of Distimation's Real-world Performance on a Superconducting Quantum Computer. https://doi.org/10.1109/qce65121.2025.00116

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