Correlations Between Quantum Battery Capacity and Quantum Resources for Two-qubit System

• URL: http://arxiv.org/abs/2605.11399v1
• Date: Tue, 12 May 2026 01:42:32 GMT
• Title: Correlations Between Quantum Battery Capacity and Quantum Resources for Two-qubit System
• Abstract summary: We investigate the relationship between quantum battery capacity and quantum resources in a two-qubit system.<n>We find that the battery capacity decreases monotonically with the quantum entanglement, steering, Bell nonlocality and coherence, and peaks when these four quantum resources vanish.
• Score: 1.543361765922963
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: We investigate the relationship between quantum battery capacity and quantum resources in a two-qubit system consisting of mutually coupled battery and charger subsystems. We find that the battery capacity decreases monotonically with the quantum entanglement, steering, Bell nonlocality and coherence, and peaks when these four quantum resources vanish. Moreover, we reveal the capacity gap between the total system capacity and the sum of the battery and charger spin capacities, which is the residual battery capacity, and establish its positive correlation with entanglement. Furthermore, unlike the first four resources, although the battery capacity decreases monotonically with quantum imaginarity, its disappearance under system detuning does not guarantee a peak capacity, and this effect becomes more pronounced as the detuning increases. In contrast to the first five resources, the quantum state texture shows a positive correlation with battery capacity, but a negative correlation with entanglement, steering, Bell nonlocality, coherence, imaginarity, and residual battery capacity. These monotonic relationships are independent of the choice of system parameters. Our findings reveal the relationship between quantum battery capacity and quantum resources during the dynamic evolution of a quantum battery system, and advances the theory of quantum batteries and the development of quantum energy storage systems.

Related papers

• 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)
• Quantum Charging Advantage in Superconducting Solid-State Batteries [15.41964054143452]
  We experimentally RefCdemonstrate quantum charging advantage (QCA) in a scalable solid-state quantum battery.<n>We show how double-excitation Hamiltonians for two-level systems promote scalable QCA.<n>We study the performance of quantum charging compared to its uncorrelated classical counterpart.
  arXiv  Detail & Related papers  (2026-02-09T12:55:21Z)
• A continuous variable quantum battery with wireless and remote charging [12.802009684565606]
  We design a wireless and remote charging scheme based on the quantized Hamiltonian of two LC coupled circuits.<n>It is found that the quantum entanglement, which is regarded as a significant quantum resource, is not a prerequisite for charging the battery and extracting useful work.
  arXiv  Detail & Related papers  (2025-07-10T07:21:11Z)
• Quantum Computation with Quantum Batteries [0.0]
  We propose quantum batteries as intrinsic quantum energy sources for quantum computation.<n>A bosonic Fock state QB can supply the energy required for arbitrary unitary gates, regardless of the circuit's depth.<n>This approach significantly reduces wiring overhead, potentially quadrupling the number of qubits integrated within cryogenic systems.
  arXiv  Detail & Related papers  (2025-03-30T22:23:00Z)
• Dicke-Ising quantum battery of an ion chain driven by a mechanical oscillator [12.802009684565606]
  A scheme for implementing quantum batteries in a realizable and controllable platform is proposed.<n>Effect of the hopping interaction between the two-level ions and the coupling interaction between the ions and the external mechanical oscillator on the charging process of the battery is investigated.<n>Our theoretical analysis provides a solid foundation for the development of a practical quantum battery.
  arXiv  Detail & Related papers  (2025-02-12T02:12:07Z)
• Distribution Relationship of Quantum Battery Capacity [0.3823356975862007]
  The capacity monogamy relation for quantum batteries extends to general n-qubit X states.<n>Quantum batteries are believed to hold significant potential for outperforming classical counterparts in the future.
  arXiv  Detail & Related papers  (2025-02-05T03:38:58Z)
• Experimental verification of quantum battery capacity with an optical platform [7.652522929845447]
  Quantum batteries are anticipated to surpass their classical counterparts in performance because of the presence of quantum correlations.<n>Recent theoretical study introduces the quantum battery capacity that is defined according to the highest and the lowest energy during the charging and discharging procedures.
  arXiv  Detail & Related papers  (2024-12-25T01:53:26Z)
• Probing many-body Bell correlation depth with superconducting qubits [17.3215930037341]
  We report an experimental certification of genuine multipartite Bell correlations, which signal nonlocality in quantum many-body systems. In particular, we employ energy as a Bell correlation witness and variationally decrease the energy of a many-body system across a hierarchy of thresholds. Our results establish a viable approach for preparing and certifying multipartite Bell correlations, which provide a finer benchmark beyond entanglement for quantum devices.
  arXiv  Detail & Related papers  (2024-06-25T18:00:00Z)
• Local-projective-measurement-enhanced quantum battery capacity [13.61700291107261]
  capacity is an important indicator for a battery. We study the enhancement of the battery capacity under local projective measurements on a subsystem of the quantum state.
  arXiv  Detail & Related papers  (2024-05-06T01:11:25Z)
• Optimal energy storage in the Tavis-Cummings quantum battery [11.061126692312946]
  The Tavis-Cummings (TC) model serves as a natural physical realization of a quantum battery.<n>In this study, we introduce the invariant subspace method to effectively represent the quantum dynamics of the TC battery.
  arXiv  Detail & Related papers  (2023-12-20T21:36:09Z)
• Driven-dissipative quantum battery with nonequilibrium reservoirs [5.707457797211807]
  We study a quantum battery system under both external driving and dissipation.<n>In the nonequilibrium scenario, both charging efficiency and power of the quantum battery can be optimized through a compensation mechanism.<n>Our results challenge the prevailing assumption that entanglement necessarily enhances the performance of quantum devices.
  arXiv  Detail & Related papers  (2022-10-17T06:36:02Z)
• Performance of quantum batteries with correlated and uncorrelated chargers [0.0]
  Energy can be stored in quantum batteries by electromagnetic fields as chargers. It is shown that by using two independent charging fields, prepared in coherent states, charging power of the quantum battery can be significantly improved.
  arXiv  Detail & Related papers  (2022-07-18T16:42:39Z)

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.