Title: Strong converse exponents of partially smoothed information measures and its applications
Speaker: 姚永胜（亚琛工业大学）
Time: Monday, October 13, 2025, 10:00-11:00
Venue: Gewu Building 315
Abstract: Partially smoothed information measures are fundamental tools in one-shot quantum information theory. In this work, we determine the exact strong converse exponents of these measures for both pure quantum states and classical states. Notably, we find that the strong converse exponents based on trace distance takes different forms between pure and classical states, indicating that they are not uniform across all quantum states. Leveraging these findings, we derive the strong converse exponents for quantum data compression, classical privacy amplification, and classical state splitting.
