A quantum heat engine driven by atomic collisions
Sign Up to like & getrecommendations! 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… read more here.
Keywords: heat; heat engine; quantum heat; power output ... See more keywords
Universal efficiency boost in prethermal quantum heat engines at negative temperature
Sign Up to like & getrecommendations! Published in 2025 at "Nature Communications"
DOI: 10.1038/s41467-025-66424-1
Abstract: Heat engines near the adiabatic limit typically assume a working medium at thermal equilibrium. However, quantum many-body systems often showcase conservation laws that hinder thermalization, leading to prethermalization in exotic stationary phases. This work explores… read more here.
Keywords: quantum heat; universal efficiency; efficiency; heat engines ... See more keywords
Unifying quantum heat transfer and superradiant signature in a nonequilibrium collective-qubit system: A polaron-transformed Redfield approach
Sign Up to like & getrecommendations! 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… read more here.
Keywords: system; collective qubit; heat transfer; heat ... See more keywords
Two and three-state quantum heat engines with stochastic resetting
Sign Up to like & getrecommendations! Published in 2025 at "Journal of Physics A: Mathematical and Theoretical"
DOI: 10.1088/1751-8121/ae0bcc
Abstract: Quantum heat engines have undergone extensive studies over the last two decades. Simultaneously, the studies of the applications of stochastic resetting in various fields are on the rise. We explore the effect of stochastic resetting… read more here.
Keywords: quantum heat; quantum; stochastic resetting; heat engines ... See more keywords
Autonomous quantum heat engine enabled by molecular optomechanics and hysteresis switching
Sign Up to like & getrecommendations! Published in 2024 at "Physical Review A"
DOI: 10.1103/physreva.112.043508
Abstract: By integrating molecular optomechanics with molecular switches, we propose a scheme for a molecular quantum heat engine that operates autonomously through hysteretic feedback without external driving or modulation. Through a comparative analysis conducted within both… read more here.
Keywords: quantum heat; quantum; heat engine; molecular optomechanics ... See more keywords
Quantum heat engine based on dynamical materials design
Sign Up to like & getrecommendations! 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… read more here.
Keywords: quantum heat; quantum; heat engine; engine based ... See more keywords
Finite-power performance of quantum heat engines in linear response.
Sign Up to like & getrecommendations! 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… read more here.
Keywords: heat; power performance; finite power; performance quantum ... See more keywords
Quantum heat engine based on level degeneracy.
Sign Up to like & getrecommendations! 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… read more here.
Keywords: potential well; based level; engine; quantum heat ... See more keywords
Erratum: Characteristic functions of quantum heat with baths at different temperatures [Phys. Rev. E 97, 062117 (2018)].
Sign Up to like & getrecommendations! Published in 2019 at "Physical Review E"
DOI: 10.1103/physreve.100.039902
Abstract: This corrects the article DOI: 10.1103/PhysRevE.97.062117. read more here.
Keywords: baths different; heat baths; erratum characteristic; characteristic functions ... See more keywords
Quantifying the quantum heat contribution from a driven superconducting circuit.
Sign Up to like & getrecommendations! 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… read more here.
Keywords: heat; circuit; heat flow; qubit ... See more keywords
Non-Markovian thermal operations boosting the performance of quantum heat engines.
Sign Up to like & getrecommendations! 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.… read more here.
Keywords: heat engines; non markovian; thermal operations; engine ... See more keywords