A new thermodynamic inequality is derived which leads to the maximum work that can be extracted from multi-heat baths with the assistance of discrete quantum feedback control. The maximum work is determined by the free-energy difference and a generalized mutual information content between the thermodynamic system and the feedback controller. This maximum work can exceed that in conventional thermodynamics and, in the case of a heat cycle with two heat baths, the heat efficiency can be greater than that of the Carnot cycle. The consistency of our results with the second law of thermodynamics is ensured by the fact that work is needed for information processing of the feedback controller.
Feedback-Enhanced Quantum Metrology and Clock Precision under Thermodynamic Uncertainty
Key Laboratory of Intelligent Optoelectronic Devices and Chips of Jiangsu Higher Education Institutions, School of Physical Science and Technology, Suzhou University of Science and Technology（江苏高校智能光电器件与芯片重点实验室，苏州科技大学物理科学与技术学院）；Advanced Technology Research Institute of Taihu Photon Center, School of Physical Science and Technology, Suzhou University of Science and Technology（太湖光子中心先进技术研究院，苏州科技大学物理科学与技术学院）；Department of Physics, Zhejiang Normal University（浙江师范大学物理系）
Permanent Thermodynamic Mpemba Inversion from Quantum-Jump Feedback
Key Laboratory of Intelligent Optoelectronic Devices and Chips of Jiangsu Higher Education Institutions, School of Physical Science and Technology, Suzhou University of Science and Technology（江苏高校智能光电技术与芯片重点实验室，苏州科技大学物理科学与技术学院）；Advanced Technology Research Institute of Taihu Photon Center, School of Physical Science and Technology, Suzhou University of Science and Technology（太湖光子中心先进技术研究院，苏州科技大学物理科学与技术学院）；Department of Physics, Zhejiang Normal University（浙江师范大学物理系）
The Second Law of Thermodynamics and Quantum Feedback Control: Maxwell's Demon with Weak Measurements
最近Sagawa和Ueda [Phys. Rev. Lett. 100，080403（2008）]导出了可以使用反馈控制从量子系统中提取的功的界限。他们留下了一个问题，即控制器所能进行的每一次测量是否都能达到这个界限。我们表明，它可以，这是直接从最近的工作麦克斯韦的恶魔由Alicki等人[开放系统。戴纳姆11，205（2004）]，用于离散和连续反馈控制。我们的分析还表明，裸露的，有效的测量总是做非负功的系统在平衡状态下，但不增加热量。
Thermodynamics of Ahn--Doherty--Landahl Continuous Quantum Error Correction
University of Southern California（南加州大学）；National University of Singapore（新加坡国立大学）；Los Alamos National Laboratory（洛斯阿拉莫斯国家实验室）；PUC-Rio（天主教里约热内卢 Pontifical 大学）
Population Annealing as a Discrete-Time Schrödinger Bridge
Graduate School of Information Sciences, Tohoku University（东北大学信息科学研究院）；Department of Physics, Tokyo Institute of Technology（东京工业大学物理系）；Research and Education Institute for Semiconductors and Informatics, Kumamoto University（熊本大学半导体与信息学研究与教育学院）；Sigma-i Co., Ltd.（Sigma-i有限公司）
