New Post-Processing for Quantum Conference Key Agreement via Communication for Omniscience
Mr. SHIN SUN - Okinawa Institute of Science and Technology Graduate University, Okinawa, Japan
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2026-05-06 11:00:00 ~
2026-05-06 12:00:00See event details for additional info.
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Meeting Room, 2F, QFort, NCKU
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New Post-Processing for Quantum Conference Key Agreement via Communication for Omniscience
Mr. SHIN SUN - Okinawa Institute of Science and Technology Graduate University, Okinawa, Japan
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DATE |
2026-05-06 |
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11:00-12:00 |
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PLACE |
Meeting Room, 2F, QFort, NCKU |
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FIELD |
Quantum Information Science |
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SPEAKER |
Mr. Shin Sun - Okinawa Institute of Science and Technology Graduate University, Okinawa, Japan |
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TITLE |
New Post-Processing for Quantum Conference Key Agreement via Communication for Omniscience |
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ABSTRACT |
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. |
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