主讲人：Giuliano Benenti 教授（英苏布里亚大学）

题目：Quantum thermal engines: Selected results and open problems

时间：2023年10月14日上午09:00

地点：理工楼1226

报告摘要：

Since its inception, the development of thermodynamics and its technological applications have been boosted by fundamental questions. A key question is what the ultimate bounds to the performance of heat engines are. It is desirable that a heat engine operates close to the ideal, Carnot efficiency, delivers large power, and exhibits small power fluctuations. Thermodynamic uncertainty relations (TURs) set a lower bound on the time-integrated relative fluctuation of an arbitrary current, which diverges when the dissipationless limit required for ideal efficiency is achieved. The application of such relations leads, under suitable conditions, to a trade-off between efficiency, power, and fluctuations. The validity range of TURs in quantum systems is still under debate. This talks discusses the above problems for periodically driven heat engines, with modulated couplings between the working medium and the baths, engineered in a suitable way to perform useful thermodynamic tasks, including engine, refrigerators, and hybrid working modes, the realization of heat rectifiers and transistors. The relevance of non-Markovianity of the baths and the appearance dissipation-induced cooperative advantage in quantum thermal engines will be also discussed.

个人简介：

Giuliano Benenti, Ph.D in Physics at the Universit`a di Milano, Italy.From 31 December 2002: Researcher at Univesit`a degli Studi dell’Insubria, Sede di Como, Italy. Main research interests: Thermoelectric transport; Heat transport and thermal rectififiers; Far from equilibrium quantum systems; Quantum computation and quantum information;

Open quantum systems; Many-body quantum systems; Disordered systems and Nonlinear and complex systems. Author of more than 110 scientifific publications, including 16 Phys. Rev. Lett. and 40 Phys. Rev. Papers.