Details
| Originalsprache | Englisch |
|---|---|
| Aufsatznummer | 022142 |
| Fachzeitschrift | Physical Review E |
| Jahrgang | 97 |
| Ausgabenummer | 2 |
| Publikationsstatus | Veröffentlicht - 27 Feb. 2018 |
| Extern publiziert | Ja |
Abstract
We investigate the limitations that emerge in thermodynamic tasks as a result of having local control only over the components of a thermal machine. These limitations are particularly relevant for devices composed of interacting many-body systems. Specifically, we study protocols of work extraction that employ a many-body system as a working medium whose evolution can be driven by tuning the on-site Hamiltonian terms. This provides a restricted set of thermodynamic operations, giving rise to alternative bounds for the performance of engines. Our findings show that those limitations in control render it, in general, impossible to reach Carnot efficiency; in its extreme ramification it can even forbid to reach a finite efficiency or finite work per particle. We focus on the one-dimensional Ising model in the thermodynamic limit as a case study. We show that in the limit of strong interactions the ferromagnetic case becomes useless for work extraction, while the antiferromagnetic case improves its performance with the strength of the couplings, reaching Carnot in the limit of arbitrary strong interactions. Our results provide a promising connection between the study of quantum control and thermodynamics and introduce a more realistic set of physical operations well suited to capture current experimental scenarios.
ASJC Scopus Sachgebiete
- Physik und Astronomie (insg.)
- Statistische und nichtlineare Physik
- Mathematik (insg.)
- Statistik und Wahrscheinlichkeit
- Physik und Astronomie (insg.)
- Physik der kondensierten Materie
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in: Physical Review E, Jahrgang 97, Nr. 2, 022142, 27.02.2018.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review
}
TY - JOUR
T1 - Quantum thermodynamics with local control
AU - Lekscha, J.
AU - Wilming, H.
AU - Eisert, J.
AU - Gallego, R.
N1 - Funding Information: We acknowledge funding from the BMBF (Q.com), the EU (RAQUEL, AQuS), the DFG (EI 519/7-1, CRC 183, GA 2184/2-1), the ERC (TAQ), and the Studienstiftung des Deutschen Volkes.
PY - 2018/2/27
Y1 - 2018/2/27
N2 - We investigate the limitations that emerge in thermodynamic tasks as a result of having local control only over the components of a thermal machine. These limitations are particularly relevant for devices composed of interacting many-body systems. Specifically, we study protocols of work extraction that employ a many-body system as a working medium whose evolution can be driven by tuning the on-site Hamiltonian terms. This provides a restricted set of thermodynamic operations, giving rise to alternative bounds for the performance of engines. Our findings show that those limitations in control render it, in general, impossible to reach Carnot efficiency; in its extreme ramification it can even forbid to reach a finite efficiency or finite work per particle. We focus on the one-dimensional Ising model in the thermodynamic limit as a case study. We show that in the limit of strong interactions the ferromagnetic case becomes useless for work extraction, while the antiferromagnetic case improves its performance with the strength of the couplings, reaching Carnot in the limit of arbitrary strong interactions. Our results provide a promising connection between the study of quantum control and thermodynamics and introduce a more realistic set of physical operations well suited to capture current experimental scenarios.
AB - We investigate the limitations that emerge in thermodynamic tasks as a result of having local control only over the components of a thermal machine. These limitations are particularly relevant for devices composed of interacting many-body systems. Specifically, we study protocols of work extraction that employ a many-body system as a working medium whose evolution can be driven by tuning the on-site Hamiltonian terms. This provides a restricted set of thermodynamic operations, giving rise to alternative bounds for the performance of engines. Our findings show that those limitations in control render it, in general, impossible to reach Carnot efficiency; in its extreme ramification it can even forbid to reach a finite efficiency or finite work per particle. We focus on the one-dimensional Ising model in the thermodynamic limit as a case study. We show that in the limit of strong interactions the ferromagnetic case becomes useless for work extraction, while the antiferromagnetic case improves its performance with the strength of the couplings, reaching Carnot in the limit of arbitrary strong interactions. Our results provide a promising connection between the study of quantum control and thermodynamics and introduce a more realistic set of physical operations well suited to capture current experimental scenarios.
UR - http://www.scopus.com/inward/record.url?scp=85043480357&partnerID=8YFLogxK
U2 - 10.1103/PhysRevE.97.022142
DO - 10.1103/PhysRevE.97.022142
M3 - Article
C2 - 29548160
AN - SCOPUS:85043480357
VL - 97
JO - Physical Review E
JF - Physical Review E
SN - 2470-0045
IS - 2
M1 - 022142
ER -