Speaker: 李卫靖，河北经贸大学

Inviter: 李阳阳

Title: Efficient estimation of the quantum Chernoff bound

Language: Chinese、

Time & Venue: 2026.03.11 10:00-11:00 腾讯会议：804-328-465

Abstract: The quantum phase has long been recognized as a fundamental yet elusive concept in quantum optics. In this work, we introduce an information-theoretic quantifier for quantum phase uncertainty based on the generalized Wigner-Yanase skew information, applied to the Susskind-Glogower (SG) phase operator E. We show that this quantifier, denoted I(ρ,E), satisfies natural physical requirements and captures the intuitive behavior of phase uncertainty. Our work offers a unified framework for quantifying phase uncertainty and opens new avenues for exploring phase as a quantum resource.