Coherence-Enhanced Quantum Battery Charging with Ergotropy Stabilization

• URL: http://arxiv.org/abs/2605.17700v1
• Date: Sun, 17 May 2026 23:46:05 GMT
• Title: Coherence-Enhanced Quantum Battery Charging with Ergotropy Stabilization
• Abstract summary: Quantum batteries achieve charging speed and energy storage performances that surpass classical thermodynamic limits.<n>We propose a dual-channel coherence framework that exploits dark-state protection to stabilize ergotropy.<n>These results offer a robust pathway for high-power, stabilized energy storage in quantum architectures.
• Score: 2.8973758359480013
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Quantum batteries utilize nonclassical resources to achieve charging speed and energy storage performances that surpass classical thermodynamic limits. However, the practical realization of quantum batteries is often constrained by the inevitable environment-induced dissipation of both stored ergotropy and coherence. To actively counteract these losses, we propose a dual-channel coherence framework that exploits dark-state protection to stabilize ergotropy. We conduct, for the first time, an investigation of the synergistic interplay between internal charger coherence and reservoir squeezing, the latter acting as a source of external coherence. In the resource-efficient regime where charger and battery sizes are comparable, our study shows that internal charger coherence and reservoir squeezing jointly enhance the transient charging power. Crucially, initial charger coherence is the fundamental resource for maximizing and stabilizing steady-state ergotropy through dark-state protection. Our analysis reveals that these advantages are driven by the buildup of local battery coherence, which emerges from the integration of both internal and external coherence sources. These results offer a robust pathway for high-power, stabilized energy storage in quantum architectures.

Related papers

• Dissipative Quantum Battery from Many-Body Scars [17.41475544962937]
  We propose an autonomous quantum-battery protocol based on dissipatively selected quantum many-body scars.<n>We show that engineered local bond dissipation can drive the system into a high-energy scar-supported manifold with large extractable work.
  arXiv  Detail & Related papers  (2026-09-10T14:21:30Z)
• Suppressing Self-Discharging of Quantum Batteries by Cavity Interactions [0.0]
  We find that the inter-cavity coupling enhances the suppression of self-discharging across every initial preparation, battery size, and temperature.<n>For a single qubit, the energy-basis coherence of a pure superposition leads to better long-time retention than fully excited state.<n>For two-qubit batteries, Bell-state preparations exhibit enhanced long-time ergotropy retention compared with the fully excited state.
  arXiv  Detail & Related papers  (2026-06-22T23:11:06Z)
• Coherent catalyst induced stabilization of ergotropy in open quantum batteries [0.0]
  coherent interference between different interaction channels generates a decoherence-free-like subspace that suppresses relaxation-induced energy leakage and stabilizes the steady-state ergotropy.<n>The resulting protection mechanism remains effective under strong dissipation and finite-temperature conditions, indicating that interference-assisted coherent control may provide a feasible strategy for robust quantum energy storage in nonequilibrium open systems.
  arXiv  Detail & Related papers  (2026-05-23T07:55:15Z)
• Entanglement-facilitated macroscopic cluster formation in quantum many-body dynamics [42.89492957665636]
  We find that initial-state entanglement suppresses the proliferation of true-vacuum bubbles and stabilises macroscopic connected clusters.<n>Our results establish a connection between initial-state preparation and the preservation of global structures.
  arXiv  Detail & Related papers  (2026-05-21T18:21:14Z)
• Charging Dynamics in a Distance-Modulated Planar Quantum-Battery Architecture [4.227716615390051]
  We propose a planar many-body quantum-battery architecture consisting of coupled resonators.<n>We investigate the open-system charging dynamics in the strong-coupling regime using a Redfield master-equation approach.<n>Results highlight the critical role of geometry-controlled interactions in many-body quantum batteries.
  arXiv  Detail & Related papers  (2026-04-24T03:06:20Z)
• Connection-topology--dependent energy transport and ergotropy in quantum battery networks with reciprocal and nonreciprocal couplings [17.928807027012663]
  We investigate quantum battery networks with engineered reciprocal and nonreciprocal couplings.<n>In reciprocal cascaded networks, a parity-dependent spectral response produces an odd-even transport effect.<n>We also analyze the role of thermal and squeezed reservoirs and show that thermal noise mainly increases passive energy.
  arXiv  Detail & Related papers  (2026-03-24T09:52:37Z)
• Ergotropy in Quantum Batteries [48.639104338064804]
  A key figure of merit for quantum battery (QB) performance, ergotropy plays a crucial role.<n>Here, we investigate the ergotropy of a general QB model and find that the charging process is accompanied by the variation and inversion of the energy level populations.<n>Our work establishes a rigorous framework for optimizing ergotropy and charging efficiency, paving the way for high-performance quantum energy-storage devices.
  arXiv  Detail & Related papers  (2025-12-26T04:35:36Z)
• Giant-Atom Quantum Batteries [14.867900297816808]
  Environmentally induced decoherence poses a fundamental challenge to quantum energy storage systems.<n>We propose a QB protocol utilizing the nonlocal coupling properties of giant atoms (GAs)<n>In this architecture, both the QB and its charger are implemented as superconducting GAs with multiple nonlocal coupling points to a shared microwave waveguide.
  arXiv  Detail & Related papers  (2025-10-27T01:20:27Z)
• Enhancing work-extraction in quantum batteries via correlated reservoirs [0.0]
  Local and spatially correlated reservoirs influence the work extraction in quantum batteries.<n>Coherence as a key resource underlying the enhanced performance of quantum batteries.<n>In addition, we reveal that when the battery dynamics is governed by an effective Hamiltonian with long-range interactions, it yields higher ergotropy compared to short-range interactions.
  arXiv  Detail & Related papers  (2025-09-29T17:39:49Z)
• Correlation Enhanced Autonomous Quantum Battery Charging via Structured Reservoirs [0.0]
  We study the charging dynamics of a quantum battery coupled to a structured reservoir composed of two qubits.<n>For both incoherent and coherent initial states, we analyze the stored energy, ergotropy, and charging power of the battery.
  arXiv  Detail & Related papers  (2025-08-25T14:46:25Z)
• Impact of Clifford operations on non-stabilizing power and quantum chaos [14.37149160708975]
  Non-stabilizerness, alongside entanglement, is a crucial ingredient for fault-tolerant quantum computation.<n>We study the generation and thermalization of non-stabilizerness in circuits that mix Clifford and non-Clifford operations.<n>Our work contributes to a better understanding of quantum computational resources and of their role in quantum chaos.
  arXiv  Detail & Related papers  (2025-05-20T18:02:12Z)
• Frequency-resolved Purcell effect for the dissipative generation of steady-state entanglement [49.1574468325115]
  We report a driven-dissipative mechanism to generate stationary entangled $W$ states among strongly-interacting quantum emitters placed within a cavity. The non-harmonic energy structure of the interacting ensemble allows this transition to be resonantly selected by the cavity. Evidence of this purely dissipative mechanism should be observable in state-of-the-art cavity QED systems in the solid-state.
  arXiv  Detail & Related papers  (2023-12-19T18:04:22Z)
• 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)

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.