One-Way Quantum Computing with Untrusted Networks

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日期	2025-10-27

時間	12:10-13:10

地點	理學教學新大樓物理系1F 36173會議室

領域	Quantum Information Science

講者	陳世軒博士 - 國立成功大學工程科學系

題目	One-Way Quantum Computing with Untrusted Networks

摘要	One-way quantum computing utilizes entanglement networks to process quantum information among endpoint nodes. However, in real-world, noisy, and imperfect scenarios, quantum nodes can become untrusted and may deteriorate into classical states of pre-existing data, compromising the accuracy of the resulting computations. Here, we present a metric to benchmark the advantages of one-way quantum computing over alternatives that rely on networks of classical nodes. This metric extends genuine multipartite Einstein-Podolsky-Rosen steering from describing static states to characterizing quantum computing processes, effectively distinguishing them from any computing performed by networks that incorporate classical nodes. We use this metric to experimentally quantify the advantages of four-qubit entangled states of polarized photons in one-way quantum computing processes for a universal gate set, which includes the Hadamard, T, and controlled-NOT gates. Our results assist in evaluating and enhancing practical quantum information related to one-way quantum computing.

2025-10-27 12:10:00 ~ 2025-10-27 13:10:00