本領域のセミナーシリーズとして、2025年10月14日火曜日に九州大学伊都キャンパスにて、Seok Hyung Lie氏によるセミナーが開催されます。

セミナー情報は下記です。

Speaker：Seok Hyung Lie（Ulsan National Institute of Science and Technology）
Date：2025年10月14日（火）14:40～
Place：九州大学伊都キャンパスウエスト2号館826号室（第4会議室）

Title：Thermal operations from informational equilibrium
Abstract：
Thermal operations are quantum channels that have taken a prominent role in deriving fundamental thermodynamic limitations in quantum systems. In this talk, we show that these channels are uniquely characterized by a purely quantum information theoretic property: They admit a dilation into a unitary process that leaves the environment invariant when applied to the equilibrium state. In other words, they are the only channels that preserve equilibrium between system and environment. Extending this perspective, we explore an information theoretic idealization of heat bath behavior, by considering channels where the environment remains locally invariant for every initial state of the system. These are known as catalytic channels. We show that catalytic channels provide a refined hierarchy of Gibbs-preserving maps for fully-degenerate Hamiltonians, and are closely related to dual unitary quantum circuits.