241 citations · 1.4k across the 28 of their papers we have counts for
6 papers · 1 filter
Performance limits of multilevel and multipartite quantum heat machines
Wolfgang Niedenzu, David Gelbwaser-Klimovsky, Gershon Kurizki
We present the general theory of a quantum heat machine based on an -level system (working medium) whose excited levels are degenerate, a prerequisite for steady-state int…
On the operation of machines powered by quantum non-thermal baths
Wolfgang Niedenzu, David Gelbwaser-Klimovsky, Abraham G. Kofman +1
Diverse models of engines energised by quantum-coherent, hence non-thermal, baths allow the engine efficiency to transgress the standard thermodynamic Carnot bound. These transgres…
Self-Ordered stationary states of driven quantum degenerate gases in optical resonators
Raimar M. Sandner, Wolfgang Niedenzu, Francesco Piazza +1
We study the role of quantum statistics in the self-ordering of ultracold bosons and fermions moving inside an optical resonator with transverse coherent pumping. For few particles…
Multiatom Quantum Coherences in Micromasers as Fuel for Thermal and Nonthermal Machines
Ceren B. Dağ, Wolfgang Niedenzu, Özgür E. Müstecaplıoğlu +1
In this paper we address the question: To what extent is the quantum state preparation of multiatom clusters (before they are injected into the microwave cavity) instrumental for d…
Thermodynamics of quantum systems under dynamical control
D. Gelbwaser-Klimovsky, Wolfgang Niedenzu, Gershon Kurizki
In this review the debated rapport between thermodynamics and quantum mechanics is addressed in the framework of the theory of periodically-driven/controlled quantum-thermodynamic…
Multistable particle-field dynamics in cavity-generated optical lattices
Dominik J. Winterauer, Wolfgang Niedenzu, Helmut Ritsch
Polarizable particles trapped in a resonator-sustained optical-lattice potential generate strong position-dependent backaction on the intracavity field. In the quantum regime parti…