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Published in 2021 at "Nature Communications"
DOI: 10.1038/s41467-021-22222-z
Abstract: Quantum heat engines are subjected to quantum fluctuations related to their discrete energy spectra. Such fluctuations question the reliable operation of thermal machines in the quantum regime. Here, we realize an endoreversible quantum Otto cycle…
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Keywords:
heat;
heat engine;
quantum heat;
power output ... See more keywords
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Published in 2019 at "Chinese Physics B"
DOI: 10.1088/1674-1056/28/5/050502
Abstract: We investigate full counting statistics of quantum heat transfer in a collective-qubit system, constructed by multi-qubits interacting with two thermal baths. The nonequilibrium polaron-transformed Redfield approach embedded with an auxiliary counting field is applied to…
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Keywords:
system;
collective qubit;
heat transfer;
heat ... See more keywords
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Published in 2020 at "Physical Review B"
DOI: 10.1103/physrevb.102.125131
Abstract: We propose a quantum heat engine based on the ultrafast dynamical control of the magnetic properties of a nanoscale working body. The working principle relies on nonlinear phononics, an example for dynamical materials design. We…
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Keywords:
quantum heat;
quantum;
heat engine;
engine based ... See more keywords
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Published in 2019 at "Physical review. E"
DOI: 10.1103/physreve.100.012105
Abstract: We investigate the finite-power performance of quantum heat engines working in the linear response regime where the temperature gradient is small. The engine cycles with working substances of ideal harmonic systems consist of two heat…
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Keywords:
heat;
power performance;
finite power;
performance quantum ... See more keywords
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Published in 2019 at "Physical review. E"
DOI: 10.1103/physreve.100.012123
Abstract: We study a quantum Stirling cycle which extracts work using quantized energy levels of a potential well. The work and the efficiency of the engine depend on the length of the potential well, and the…
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Keywords:
potential well;
based level;
engine;
quantum heat ... See more keywords
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Published in 2019 at "Physical Review E"
DOI: 10.1103/physreve.100.039902
Abstract: This corrects the article DOI: 10.1103/PhysRevE.97.062117.
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Keywords:
baths different;
heat baths;
erratum characteristic;
characteristic functions ... See more keywords
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Published in 2020 at "Physical review. E"
DOI: 10.1103/physreve.102.030102
Abstract: Heat flow management at the nanoscale is of great importance for emergent quantum technologies. For instance, a thermal sink that can be activated on-demand is a highly desirable tool that may accommodate the need to…
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Keywords:
heat;
circuit;
heat flow;
qubit ... See more keywords
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Published in 2022 at "Physical review. E"
DOI: 10.1103/physreve.106.014114
Abstract: It is investigated whether non-Markovianity, i.e., the memory effects resulting from the coupling of the system to its environment, can be beneficial for the performance of quantum heat engines. Specifically, two physical models are considered.…
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Keywords:
heat engines;
non markovian;
thermal operations;
engine ... See more keywords
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Published in 2022 at "Physical review. E"
DOI: 10.1103/physreve.106.024131
Abstract: External driving of bath temperatures with a phase difference of a nonequilibrium quantum engine leads to the emergence of geometric effects on the thermodynamics. In this work we modulate the amplitude of the external driving…
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Keywords:
heat engine;
thermodynamics;
engine;
quantum heat ... See more keywords
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Published in 2022 at "Physical review. E"
DOI: 10.1103/physreve.106.l022105
Abstract: Uncovering whether strong system-bath coupling can be an advantageous operation resource for energy conversion can facilitate the development of efficient quantum heat engines (QHEs). Yet, a consensus on this ongoing debate is still lacking owing…
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Keywords:
heat engines;
coupling;
strong coupling;
linear cyclic ... See more keywords
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Published in 2023 at "Physical review. E"
DOI: 10.1103/physreve.107.044121
Abstract: Precisely controlling heat transfer in a quantum mechanical system is particularly significant for designing quantum thermodynamical devices. With the technology of experiment advances, circuit quantum electrodynamics (circuit QED) has become a promising system due to…
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Keywords:
system;
circuit;
circuit quantum;
thermal diode ... See more keywords