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Article

Quantum Information Remote Carnot Engines and Voltage Transformers

1
Department of Applied Physics and Materials Engineering, Universidad Politecnica de Madrid, 28040 Madrid, Spain
2
Department of Theoretical Physics, Universidad Complutense de Madrid, 28040 Madrid, Spain
3
Center for Computational Simulation, Universidad Politecnica de Madrid, 28040 Madrid, Spain
*
Author to whom correspondence should be addressed.
Entropy 2019, 21(2), 127; https://doi.org/10.3390/e21020127
Received: 3 January 2019 / Revised: 24 January 2019 / Accepted: 28 January 2019 / Published: 30 January 2019
(This article belongs to the Special Issue Quantum Thermodynamics II)
A physical system out of thermal equilibrium is a resource for obtaining useful work when a heat bath at some temperature is available. Information Heat Engines are the devices which generalize the Szilard cylinders and make use of the celebrated Maxwell demons to this end. In this paper, we consider a thermo-chemical reservoir of electrons which can be exchanged for entropy and work. Qubits are used as messengers between electron reservoirs to implement long-range voltage transformers with neither electrical nor magnetic interactions between the primary and secondary circuits. When they are at different temperatures, the transformers work according to Carnot cycles. A generalization is carried out to consider an electrical network where quantum techniques can furnish additional security. View Full-Text
Keywords: quantum information heat engines; quantum thermodynamics; entanglement entropy; quantum cryptography quantum information heat engines; quantum thermodynamics; entanglement entropy; quantum cryptography
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MDPI and ACS Style

Diazdelacruz, J.; Martin-Delgado, M.A. Quantum Information Remote Carnot Engines and Voltage Transformers. Entropy 2019, 21, 127. https://doi.org/10.3390/e21020127

AMA Style

Diazdelacruz J, Martin-Delgado MA. Quantum Information Remote Carnot Engines and Voltage Transformers. Entropy. 2019; 21(2):127. https://doi.org/10.3390/e21020127

Chicago/Turabian Style

Diazdelacruz, Jose, and Miguel A. Martin-Delgado. 2019. "Quantum Information Remote Carnot Engines and Voltage Transformers" Entropy 21, no. 2: 127. https://doi.org/10.3390/e21020127

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