SAMOP 2023 – wissenschaftliches Programm

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QI: Fachverband Quanteninformation

QI 10: Quantum Thermodynamics and Open Quantum Systems I

QI 10.5: Vortrag

Dienstag, 7. März 2023, 12:15–12:30, B302

Thermodynamics of a many-body three level maser — •Julia Boeyens, Benjamin Yadin, and Stefan Nimmrichter — Naturwissenschaftlich-Technische Fakultät, Universität Siegen, Siegen 57068, Germany

Many-body systems that are invariant under permutation of particles display interesting effects like superradiance due to their collective dynamics. These effects are apparent even in systems of particles that are, in principle, distinguishable but are permutation invariant from the perspective of the bath. It was recently demonstrated that multi-level systems that are collectively coupled to a thermal environment have thermodynamic properties that are different from collective spin systems and collections of distinguishable particles [1]. The thermodynamic effects of interactions between the multi-level systems are, however, yet to be investigated. Interactions should heighten the differences observed between the non-thermal steady states obtained by multi-level systems and the already well studied spin systems. In this work we study a three level maser coupled collectively to two thermal reservoirs. The performance is compared to an equivalent engine that is made up of the same number of three level systems that are distinguishable from the perspective of the baths.

[1] B. Yadin, B. Morris, K. Brandner arXiv:2206.12639 (2022)