Condensed Matter Seminar: "Dynamical View of Quantum Thermodynamics: Insight from Heat Engines"
Starts 28 Jul 2016 11:30
Ends 28 Jul 2016 13:00
Central European Time
Quantum thermodynamics addresses the emergence of thermodynamical laws from quantum me- chanics. The viewpoint advocated is based on the intimate connection of quantum thermodynamics with the theory of open quantum systems. Quantum mechanics inserts dynamics into thermody- namics giving a sound foundation to finite-time-thermodynamics. The emergence of the 0-law I-law II-law and III-law of thermodynamics from quantum considerations will be presented through exam- ples. I will show that the 3-level laser is equivalent to Carnot engine. I will reverse the engine and obtain a quantum refrigerator. Different models of quantum refrigerators and their optimisation will be discussed. A heat-driven refrigerator (absorption refrigerator) is compared to a power-driven refrigerator related to laser cooling. This will lead to a dynamical version of the III-law of thermo- dynamics limiting the rate of cooling when the absolute zero is approached. I will show that various engine types are thermodynamically equivalent in the quantum limit of small engine action. I will address the question why we find heat exchangers and flywheels in quantum engines. I will present a molecular model of a heat rectifier and a heat pump in a non-Markovian and strong coupling regime [? ].
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