“School of Nano-Sciences”
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| Paper IPM / Nano-Sciences / 18485 |
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| Abstract: | |||||
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This study investigates the thermodynamic behavior of a two-qubit quantum system, where each
qubit is coupled to an independent thermal reservoir, either bosonic or fermionic. Using a master
equation approach, we analyze both steady-state and time-dependent ergotropy to understand how
different reservoir statistics affect work extraction. In bosonic environments, ergotropy consistently
declines with increasing temperature due to thermal noise. In contrast, fermionic reservoirs exhibit
more complex behavior, with ergotropy enhanced by particle transport under non-equilibrium
conditions. Our results reveal a threshold-like sensitivity to the chemical potential configuration,
leading to qualitatively distinct regimes of energy storage performance. Time-resolved analyses show
that the systemâs approach to steady state varies depending on the type of reservoir and the coupling
strength between qubits. These insights highlight how carefully engineered reservoir properties and
non-equilibrium driving can be leveraged to optimize quantum battery performance.
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