Outputs (15)

Stochastic Thermodynamics at the Quantum-Classical Boundary: A Self-Consistent Framework Based on Adiabatic-Response Theory (2024)
Journal Article
Eglinton, J., Carollo, F., Lesanovsky, I., & Brandner, K. (2024). Stochastic Thermodynamics at the Quantum-Classical Boundary: A Self-Consistent Framework Based on Adiabatic-Response Theory. Quantum, 8, Article 1486. https://doi.org/10.22331/q-2024-09-26-1486

Microscopic thermal machines promise to play an important role in future quantum technologies. Making such devices widely applicable will require effective strategies to channel their output into easily accessible storage systems like classical degre... Read More about Stochastic Thermodynamics at the Quantum-Classical Boundary: A Self-Consistent Framework Based on Adiabatic-Response Theory.

Rydberg-ion flywheel for quantum work storage (2023)
Journal Article
Martins, W. S., Carollo, F., Li, W., Brandner, K., & Lesanovsky, I. (2023). Rydberg-ion flywheel for quantum work storage. Physical Review A, 108(5), Article L050201. https://doi.org/10.1103/PhysRevA.108.L050201

Trapped ions provide a platform for quantum technologies that offers long coherence times and high degrees of scalability and controllability. Here, we use this platform to develop a realistic model of a thermal device consisting of two laser-driven,... Read More about Rydberg-ion flywheel for quantum work storage.

Thermodynamics of permutation-invariant quantum many-body systems: A group-theoretical framework (2023)
Journal Article
Yadin, B., Morris, B., & Brandner, K. (2023). Thermodynamics of permutation-invariant quantum many-body systems: A group-theoretical framework. Physical Review Research, 5(3), Article 033018. https://doi.org/10.1103/physrevresearch.5.033018

Quantum systems of indistinguishable particles are commonly described using the formalism of second quantization, which relies on the assumption that any admissible quantum state must be either symmetric or antisymmetric under particle permutations.... Read More about Thermodynamics of permutation-invariant quantum many-body systems: A group-theoretical framework.

Thermodynamic geometry of ideal quantum gases: a general framework and a geometric picture of BEC-enhanced heat engines (2023)
Journal Article
Eglinton, J., Pyhäranta, T., Saito, K., & Brandner, K. (2023). Thermodynamic geometry of ideal quantum gases: a general framework and a geometric picture of BEC-enhanced heat engines. New Journal of Physics, 25(4), Article 043014. https://doi.org/10.1088/1367-2630/acc966

Thermodynamic geometry provides a physically transparent framework to describe thermodynamic processes in meso- and micro-scale systems that are driven by slow variations of external control parameters. Focusing on periodic driving for thermal machin... Read More about Thermodynamic geometry of ideal quantum gases: a general framework and a geometric picture of BEC-enhanced heat engines.

Lee-Yang theory of Bose-Einstein condensation (2023)
Journal Article
Brange, F., Pyhäranta, T., Heinonen, E., Brandner, K., & Flindt, C. (2023). Lee-Yang theory of Bose-Einstein condensation. Physical Review A, 107(3), Article 033324. https://doi.org/10.1103/physreva.107.033324

Bose-Einstein condensation happens as a gas of bosons is cooled below its transition temperature, and the ground state becomes macroscopically occupied. The phase transition occurs in the thermodynamic limit of many particles. However, recent experim... Read More about Lee-Yang theory of Bose-Einstein condensation.

Many-Body Radiative Decay in Strongly Interacting Rydberg Ensembles (2022)
Journal Article
Nill, C., Brandner, K., Olmos, B., Carollo, F., & Lesanovsky, I. (2022). Many-Body Radiative Decay in Strongly Interacting Rydberg Ensembles. Physical Review Letters, 129(24), https://doi.org/10.1103/physrevlett.129.243202

When atoms are excited to high-lying Rydberg states they interact strongly with dipolar forces. The resulting state-dependent level shifts allow to study many-body systems displaying intriguing nonequilibrium phenomena, such as constrained spin syste... Read More about Many-Body Radiative Decay in Strongly Interacting Rydberg Ensembles.

Thermodynamic bounds on coherent transport in periodically driven conductors (2021)
Journal Article
Potanina, E., Flindt, C., Moskalets, M., & Brandner, K. (2021). Thermodynamic bounds on coherent transport in periodically driven conductors. Physical Review X, 11(2), 1-26. https://doi.org/10.1103/physrevx.11.021013

Periodically driven coherent conductors provide a universal platform for the development of quantum transport devices. Here, we lay down a comprehensive theory to describe the thermodynamics of these systems. We first focus on moderate thermoelectric... Read More about Thermodynamic bounds on coherent transport in periodically driven conductors.

Nonequilibrium Many-Body Quantum Engine Driven by Time-Translation Symmetry Breaking (2020)
Journal Article
Carollo, F., Brandner, K., & Lesanovsky, I. (2020). Nonequilibrium Many-Body Quantum Engine Driven by Time-Translation Symmetry Breaking. Physical Review Letters, 125(24), Article 240602. https://doi.org/10.1103/PhysRevLett.125.240602

Quantum many-body systems out of equilibrium can host intriguing phenomena such as transitions to exotic dynamical states. Although this emergent behaviour can be observed in experiments, its potential for technological applications is largely unexpl... Read More about Nonequilibrium Many-Body Quantum Engine Driven by Time-Translation Symmetry Breaking.

Nonequilibrium Quantum Many-Body Rydberg Atom Engine (2020)
Journal Article
Carollo, F., Gambetta, F. M., Brandner, K., Garrahan, J. P., & Lesanovsky, I. (2020). Nonequilibrium Quantum Many-Body Rydberg Atom Engine. Physical Review Letters, 124(17), Article 170602. https://doi.org/10.1103/physrevlett.124.170602

The standard approach to quantum engines is based on equilibrium systems and on thermo-dynamic transformations between Gibbs states. However, non-equilibrium quantum systems offer enhanced experimental flexibility in the control of their parameters a... Read More about Nonequilibrium Quantum Many-Body Rydberg Atom Engine.

Unified Thermodynamic Uncertainty Relations in Linear Response (2018)
Journal Article
Macieszczak, K., Brandner, K., & Garrahan, J. P. (2018). Unified Thermodynamic Uncertainty Relations in Linear Response. Physical Review Letters, 121(13), Article 130601. https://doi.org/10.1103/physrevlett.121.130601

Thermodynamic uncertainty relations (TURs) are recently established relations between the relative uncertainty of time-integrated currents and entropy production in non-equilibrium systems. For small perturbations away from equilibrium, linear respon... Read More about Unified Thermodynamic Uncertainty Relations in Linear Response.