Results 31 to 40 of about 2,788 (253)
Heat Engine Driven by Purely Quantum Information [PDF]
Physical Review Letters, 2013 The key question of this paper is whether work can be extracted from a heat engine by using purely quantum mechanical information. If the answer is yes, what is its mathematical formula? First, by using a bipartite memory we show that the work extractable from a heat engine is bounded not only by the free energy change and the sum of the entropy change
Park, JJ Park, Jung Jun +3 more
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Correlation-boosted quantum engine: A proof-of-principle demonstration
Physical Review Research, 2023 Employing currently available quantum technology, we design and implement a nonclassically correlated SWAP heat engine that allows to achieve an efficiency above the standard Carnot limit.
Marcela Herrera +3 more
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New Journal of Physics, 2015 We study stochastic energetic exchanges in quantum heat engines. Due to microreversibility, these obey a fluctuation relation, called the heat engine fluctuation relation, which implies the Carnot bound: no machine can have an efficiency greater than ...
Michele Campisi +2 more
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Unruh quantum Otto heat engine with level degeneracy
Physics Letters B, 2020 We investigate the Unruh quantum Otto heat engine with level degeneracy. An effectively two-level system, where the ground state is non-degenerate and the excited state is n-fold degenerate, is acting as the working substance, and the vacuum of massless ...
Hao Xu, Man-Hong Yung
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Identifying optimal cycles in quantum thermal machines with reinforcement-learning
npj Quantum Information, 2022 The optimal control of open quantum systems is a challenging task but has a key role in improving existing quantum information processing technologies.
Paolo A. Erdman, Frank Noé
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Quantum Heat Engines and Refrigerators: Continuous Devices [PDF]
Annual Review of Physical Chemistry, 2014 Quantum thermodynamics supplies a consistent description of quantum heat engines and refrigerators up to a single few-level system coupled to the environment. Once the environment is split into three (a hot, cold, and work reservoir), a heat engine can operate.
Kosloff, Ronnie, Levy, Amikam
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Quantum Relativistic Diesel Engine with Single Massless Fermion in 1 Dimensional Box System
Jurnal Penelitian Fisika dan Aplikasinya, 2018 The quantum Diesel of a single fermion in 1D box system has been explored. The Fermion particle meets the Dirac's relativistic Hamiltonian with a chosen mass worth zero.
Deny Pra Setyo +3 more
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Quantum heat engines and nonequilibrium temperature [PDF]
Physical Review E, 2009 A pair of two-level systems initially prepared in different thermal states and coupled to an external reversible work source, do not in general reach a common temperature at the end of a unitary work extraction process. We define an effective temperature for the final nonequilibrium but passive state of the bipartite quantum system and analyse its ...
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Maximum Power Output of Quantum Heat Engine with Energy Bath
Entropy, 2016 The difference between quantum isoenergetic process and quantum isothermal process comes from the violation of the law of equipartition of energy in the quantum regime. To reveal an important physical meaning of this fact, here we study a special type of
Shengnan Liu, Congjie Ou
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Landauer’s Principle in a Quantum Szilard Engine without Maxwell’s Demon
Entropy, 2020 Quantum Szilard engine constitutes an adequate interplay of thermodynamics, information theory and quantum mechanics. Szilard engines are in general operated by a Maxwell’s Demon where Landauer’s principle resolves the apparent paradoxes ...
Alhun Aydin +2 more
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