New Post-Processing for Quantum Conference Key Agreement via Communication for Omniscience

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日期	2026-05-06

時間	11:00-12:00

地點	Meeting Room, 2F, QFort, NCKU

領域	Quantum Information Science

講者	Shin Sun 碩士生 - 沖繩科學技術大學院大學

題目	New Post-Processing for Quantum Conference Key Agreement via Communication for Omniscience

摘要	Quantum conference key agreement (QCKA), the multipartite generalization of quantum key distribution, enables the establishment of secret keys among multiple parties. However, while the fundamental theory is established, the essential resources—specifically multipartite entanglement and efficient post-processing methods—remain relatively underexplored. Recently, information-theoretic results regarding the secret capacity for multiple terminals in a scheme known as "communication for omniscience" were extended to the quantum regime by Salek and Winter (IEEE Trans. Inf. Theory 71, 4374, 2025). Building upon this theoretical framework, we introduce a novel approach for utilizing communication for omniscience in QCKA post-processing. We demonstrate its application in W-state-based QCKA protocols and highlight its advantages.

2026-05-06 11:00:00 ~ 2026-05-06 12:00:00