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

2025/04/25 by Hikaru Yokomori, Marii Koyama, Yokomori, Hikaru +9
Computer Science · Physics and Astronomy · #FOS: Physical sciences #Quantum Computing Algorithms and Architecture #Quantum Information and Cryptography #Quantum Mechanics and Applications #Quantum Physics (quant-ph)

paper · pdf · doi:10.48550/arxiv.2504.18141

openalex publication_date 2025/04/25 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/29

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.

Citations

• Disti-Mator: an entanglement distillation-based state estimator
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• Teleporting an unknown quantum state via dual classical and Einstein-Podolsky-Rosen channels
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Related

• Disti-Mator: an entanglement distillation-based state estimator
• A double selection entanglement distillation-based state estimator
• Basic entanglement distillation with realistic noise
• Efficient state estimation on quantum processors
• Efficient quantum state tomography with auxiliary systems