Work

Steady State Entanglement beyond Thermal Limits

Year: 2018

Type: article

Abstract: Classical engines turn thermal resources into work, which is maximized for reversible operations. The quantum realm has expanded the range of useful operations beyond energy conversion, and incoherent resources beyond thermal reservoirs. This is the case of entanglement generation in a driven-dissipative protocol, which we hereby analyze as a continuous quantum machine. We show that for such machines the more irreversible the process, the larger the concurrence. Maximal concurrence and entropy production are reached for the hot reservoir being at negative effective temperature, beating the limits set by classic thermal operations on an equivalent system.

Source: Physical Review Letters

DOI: 10.1103/physrevlett.120.063604

Authors: F. Tacchino, A. Auffèves, M. F. Santos, D. Gerace

Institutions: University of Pavia, Centre National de la Recherche Scientifique, Institut Néel, Université Grenoble Alpes, Universidade Federal do Rio de Janeiro

Language: English

Topic: Advanced Thermodynamics and Statistical Mechanics

Subfield: Statistical and Nonlinear Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: European Cooperation in Science and Technology, Ministero dell’Istruzione, dell’Università e della Ricerca, Conselho Nacional de Desenvolvimento Científico e Tecnológico, Centre National de la Recherche Scientifique

Awards: G2218784641, G7962727594, G816157378