Quantum correlations and thermodynamic performances of two-qubit engines with local and collective baths

Autor:	Hewgill, Adam, Ferraro, Alessandro, De Chiara, Gabriele
Rok vydání:	2018
Předmět:	Quantum Physics Condensed Matter - Statistical Mechanics
Zdroj:	Phys. Rev. A 98, 042102 (2018)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevA.98.042102
Popis:	We investigate heat engines whose working substance is made of two coupled qubits performing a generalised Otto cycle by varying their applied magnetic field or their interaction strength during the compression and expansion strokes. During the heating and cooling strokes, the two qubits are coupled to local and common environments that are not necessarily at equilibrium. We find instances of quantum engines coupled to non equilibrium common environments exhibiting non-trivial connections to quantum correlations as witnessed by a monotonic dependence of the work produced on quantum discord and entanglement. Comment: Close to published version
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1806.10512 Zobrazit plný text záznamu View this record from Arxiv