报告题目：Quantum thermodynamics and its application

报告人：安钧鸿 教授，兰州大学

报告时间：2025年09月29日（星期一），下午16:00-18:00

报告地点：致知楼3328

报告摘要：

The last decade has witnessed substantial progress in quantum thermodynamics of small-scale systems out of equilibrium with the help of quantum technologies. The primary goals of quantum thermodynamics are to rebuild thermodynamics for small systems from the microscopic dynamics of quantum mechanics and to design revolutionary energy machines outperforming their classical counterparts by quantum features. How to define thermodynamic quantities, e.g., heat and work, and to understand the statistics of their fluctuations during the nonequilibrum dynamics are not only a prerequisite for constructing the framework of quantum thermodynamics but also an urgent requirement to develop finite-time quantum heat engine. In the first part of this talk, I will report our work on the fluctuation theorem for quantum heat in arbitrary system-bath coupling strength. The result reveals diverse nonequilibrium behaviors of average quantum heat determined by the feature of the system-bath energy spectrum. Such a finding supplies us a useful tool to optimizing the performance of quantum heat engine by controlling the nonequilibrium quantum heat. In the second part, I will report our work on how to realize a basic thermodynamic device-quantum battery with the attractive remote-charging, anti-aging, and mitigated self-discharging characters.

References

[1] Wei Wu and Jun-Hong An, Generalized Quantum Fluctuation Theorem for Energy Exchange, Phys. Rev. Lett. 133, 050401 (2024).

[2] Wan-Lu Song, Hai-Bin Liu, Bin Zhou, Wan-Li Yang, and Jun-Hong An, Remote Charging and Degradation Suppression for the Quantum Battery, Phys. Rev. Lett. 132, 090401 (2024).

[3] Wan-Lu Song, Ji-Ling Wang, Bin Zhou, Wan-Li Yang, and Jun-Hong An, Self-Discharging Mitigated Quantum Battery, Phys. Rev. Lett. 135, 020405 (2025).

报告人简介：

2005年在兰州大学获博士学位并留校工作。2006年至2014年相继在台湾成功大学和新加坡国立大学从事博士后和访问研究员；2011年受聘为教授；2013年入选教育部新世纪优秀人才支持计划；2016年入选甘肃省飞天学者；2017年入选中央军委科技委国防科技创新特区主题专家组专家；2019年获批国家级人才项目和中科院青年创新促进会特邀会员；2021年入选甘肃省领军人才；2025年获批国家级人才项目。从事量子精密测量中的退相干控制、量子热力学和非平衡拓扑相变等量子物理基础问题研究。