Numerical analysis of a two-qubit XYZ Heisenberg quantum Otto engine shows that reduced longitudinal coupling and optimized anisotropy improve net work and efficiency, with concurrence changes between isomagnetic strokes correlating to efficiency gains.
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Dissipative dynamics activate finite ergotropy from thermal quantum spin chains, with collective effects creating temperature- and size-dependent steady-state passivity via dark subspaces, while dephasing suppresses extraction.
Cavity coupling suppresses self-discharging in open quantum batteries, with coherence and larger sizes improving long-time ergotropy retention.
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Quantum Otto engine powered by an anisotropic Heisenberg XYZ model under independent local magnetic fields
Numerical analysis of a two-qubit XYZ Heisenberg quantum Otto engine shows that reduced longitudinal coupling and optimized anisotropy improve net work and efficiency, with concurrence changes between isomagnetic strokes correlating to efficiency gains.
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Charging Quantum Batteries via Dissipative Quenches
Dissipative dynamics activate finite ergotropy from thermal quantum spin chains, with collective effects creating temperature- and size-dependent steady-state passivity via dark subspaces, while dephasing suppresses extraction.
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Suppressing Self-Discharging of Quantum Batteries by Cavity Interactions
Cavity coupling suppresses self-discharging in open quantum batteries, with coherence and larger sizes improving long-time ergotropy retention.