Nonequilibrium Quantum Batteries: Amplified Work Extraction Through Thermal Bath Modulation

• URL: http://arxiv.org/abs/2502.05508v1
• Date: Sat, 08 Feb 2025 10:02:06 GMT
• Title: Nonequilibrium Quantum Batteries: Amplified Work Extraction Through Thermal Bath Modulation
• Authors: Maryam Hadipour, Soroush Haseli,
• Abstract summary: We study the steady state characteristics of work extraction in a two cell and three cell quantum battery interacting with multiple thermal reservoirs. Our analysis focuses on the influence of thermal gradients across the reservoirs and the impact of inter cell coupling strength on the battery performance.
• Score: 0.0
• License:
• Abstract: This study examines the steady state characteristics of work extraction in a two cell and three cell quantum battery interacting with multiple thermal reservoirs. Employing the quantum master equation framework within the Born-Markov approximation, we explore the non equilibrium dynamics governing energy storage and extraction in the system. Our analysis focuses on the influence of thermal gradients across the reservoirs and the impact of inter cell coupling strength on the battery performance. The findings demonstrate that an increase in the middle reservoir temperature substantially enhances the extractable work, underscoring the pivotal role of thermal bath amplification in optimizing energy storage efficiency. Furthermore, we uncover a non trivial relationship between ergotropy and the coupling strength among the quantum cells, revealing the existence of an optimal coupling regime that maximizes energy extraction. Beyond this threshold, excessive coupling induces energy localization, thereby diminishing the system efficiency. These insights provide a theoretical foundation for the strategic design of high performance quantum batteries by harnessing thermal gradients and interaction driven control mechanisms.

Related papers

• Demonstration of energy extraction gain from non-classical correlations [62.615368802619116]
  We show that entanglement governs the amount of extractable energy in a controllable setting. By quantifying both the concurrence of the two-qubit resource state and the energy extraction gain from applying the feedback policy, we corroborate the connection between information and energy.
  arXiv  Detail & Related papers  (2024-04-23T08:44:07Z)
• Quantum coherence enables hybrid multitask and multisource regimes in autonomous thermal machines [0.0]
  Non-equilibrium effects may have a profound impact on the performance of thermal devices performing thermodynamic tasks. In this work, we demonstrate that the presence of even small amounts of coherence in the thermal reservoirs powering a three-terminal machine, enables the appearance of combined and hybrid modes of operation.
  arXiv  Detail & Related papers  (2023-08-30T15:12:09Z)
• Dynamically Emergent Quantum Thermodynamics: Non-Markovian Otto Cycle [49.1574468325115]
  We revisit the thermodynamic behavior of the quantum Otto cycle with a focus on memory effects and strong system-bath couplings. Our investigation is based on an exact treatment of non-Markovianity by means of an exact quantum master equation.
  arXiv  Detail & Related papers  (2023-08-18T11:00:32Z)
• Thermodynamics of adiabatic quantum pumping in quantum dots [50.24983453990065]
  We consider adiabatic quantum pumping through a resonant level model, a single-level quantum dot connected to two fermionic leads. We develop a self-contained thermodynamic description of this model accounting for the variation of the energy level of the dot and the tunnelling rates with the thermal baths.
  arXiv  Detail & Related papers  (2023-06-14T16:29:18Z)
• Efficient Quantum Work Reservoirs at the Nanoscale [44.99833362998488]
  We show that two-level work reservoirs undershoot Landauer's bound, misleadingly implying energy dissipation during computation. In contrast, we demonstrate that multilevel work reservoirs achieve Landauer's bound while producing arbitrarily low entropy.
  arXiv  Detail & Related papers  (2023-05-28T21:52:33Z)
• Exploiting coherence for quantum thermodynamic advantage [0.0]
  We investigate the impact of coherence on the thermodynamic tasks of a collision model composed of a system interacting. Our results show the advantages of utilising coherence as a resource in the operation of the machine. We find an effective upper bound to the efficiency of the thermal machine operating as an engine in the presence of a coherent reservoir.
  arXiv  Detail & Related papers  (2022-02-15T15:42:45Z)
• Strong system-bath coupling reshapes characteristics of quantum thermal machines [0.0]
  We study the performance of quantum absorption refrigerators, paradigmatic autonomous quantum thermal machines. We reveal central impacts of strong couplings between the working system and the thermal baths.
  arXiv  Detail & Related papers  (2021-11-09T18:15:25Z)
• Collective effects on the performance and stability of quantum heat engines [62.997667081978825]
  Recent predictions for quantum-mechanical enhancements in the operation of small heat engines have raised renewed interest. One essential question is whether collective effects may help to carry enhancements over larger scales. We study how power, efficiency and constancy scale with the number of spins composing the engine.
  arXiv  Detail & Related papers  (2021-06-25T18:00:07Z)
• Maximal power for heat engines: role of asymmetric interaction times [110.83289076967895]
  We introduce the idea of adjusting the interaction time asymmetry in order to optimize the engine performance. Distinct optimization protocols are analyzed in the framework of thermodynamics.
  arXiv  Detail & Related papers  (2020-12-16T22:26:14Z)
• Dissipative dynamics of an open quantum battery [0.0]
  Coupling with an external environment inevitably affects the dynamics of a quantum system. We consider how charging performances of a quantum battery, modelled as a two level system, are influenced by the presence of an Ohmic thermal reservoir.
  arXiv  Detail & Related papers  (2020-05-28T14:11:38Z)
• Managing quantum heat transfer in nonequilibrium qubit-phonon hybrid system [4.809446324180698]
  We investigate quantum heat transfer and thermal management in the nonequilibrium qubit-phonon hybrid system. We obtain the steady state heat flow by tuning the arbitrary qubit-phonon coupling strength.
  arXiv  Detail & Related papers  (2020-03-12T02:46:44Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.