Quantum Capacitor: A Coherence-Based Quantum Energy Storage Device

• URL: http://arxiv.org/abs/2605.09527v1
• Date: Sun, 10 May 2026 13:25:15 GMT
• Title: Quantum Capacitor: A Coherence-Based Quantum Energy Storage Device
• Abstract summary: We introduce the concept of a quantum capacitor, a quantum device designed for reversible and ultrafast energy storage and release through coherent quantum polarization.<n>Unlike conventional quantum batteries, whose primary focus is maximizing extractable work, the proposed quantum capacitor emphasizes reactive energy accumulation, coherence-assisted charging, and rapid discharge dynamics analogous to classical capacitive systems.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Quantum batteries have recently emerged as promising candidates for microscopic energy-storage technologies exploiting uniquely quantum mechanical effects. In this work, we introduce the concept of a quantum capacitor, a quantum device designed for reversible and ultrafast energy storage and release through coherent quantum polarization. Unlike conventional quantum batteries, whose primary focus is maximizing extractable work, the proposed quantum capacitor emphasizes reactive energy accumulation, coherence-assisted charging, and rapid discharge dynamics analogous to classical capacitive systems. We formulate a minimal theoretical framework based on a driven two-level system and define a quantum capacitance associated with the susceptibility of stored energy to external driving. We further discuss charging dynamics, coherent oscillatory behavior, and the role of environmental decoherence. Our proposal establishes a bridge between quantum thermodynamics, quantum coherence theory, and nanoscale energy-storage architectures.

Related papers

• Bridging continuous control and Floquet driving for charging many-body spin chains [3.211924713637672]
  Recent advances in quantum information and quantum thermodynamics have reshaped the understanding of energy storage at the microscopic scale.<n>Quantum batteries offer a conceptual alternative to conventional macroscopic chemical batteries by exploiting quantum coherence, correlations, and many-body dynamics.
  arXiv  Detail & Related papers  (2026-07-30T10:29:59Z)
• Characterizing the functional role of quantum coherence in energy transfer [45.88028371034407]
  Quantum coherence is understood to play a role in excitation energy transfer in open quantum systems.<n>We characterize and quantify the impact of coherence in the eigenenergy basis on a generalized rate of energy transfer.
  arXiv  Detail & Related papers  (2026-06-11T14:33:32Z)
• Dual-use quantum hardware for quantum resource generation and energy storage [4.508490453509975]
  We show that protocols for fast generation of resourceful quantum states can simultaneously charge a quantum battery with a collective advantage.<n>We propose an integrated hardware protocol on superconducting circuits in which each experimental run can accomplish either quantum battery charging or quantum sensing.
  arXiv  Detail & Related papers  (2026-04-23T17:57:03Z)
• Quantum Information meets High-Energy Physics: Input to the update of the European Strategy for Particle Physics [43.15404275280645]
  Some of the most astonishing and prominent properties of Quantum Mechanics, such as entanglement and Bell nonlocality, have only been studied extensively in dedicated low-energy laboratory setups.<n>The feasibility of these studies in the high-energy regime explored by particle colliders was only recently shown and has gathered the attention of the scientific community.
  arXiv  Detail & Related papers  (2025-03-31T18:00:01Z)
• Solving an Industrially Relevant Quantum Chemistry Problem on Quantum Hardware [31.15746974078601]
  We calculate the lowest energy eigenvalue of active space Hamiltonians of industrially relevant and strongly correlated metal chelates on trapped ion quantum hardware. We are able to achieve chemical accuracy by training a variational quantum algorithm on quantum hardware, followed by a classical diagonalization in the subspace of states measured as outputs of the quantum circuit.
  arXiv  Detail & Related papers  (2024-08-20T12:50:15Z)
• Suppression of quantum dissipation: A cooperative effect of quantum squeezing and quantum measurement [22.051290654737976]
  We propose a scheme for beating environment-induced dissipation in an open two-level system coupled to a parametrically driven cavity. We demonstrate that, in the presence of the cooperation, the system dynamics can be completely dominated by the effective system-cavity interaction. This work provides a generic method of dissipation suppression in a variety of quantum mechanical platforms, including natural atoms and superconducting circuits.
  arXiv  Detail & Related papers  (2024-07-12T15:10:44Z)
• Exceeding the maximum classical energy density in fully charged quantum batteries [0.0]
  In classical batteries, the energy density at each subsystem reaches its maximum value, denoted as $E_C$.<n>We demonstrate that this limit can be surpassed in quantum batteries by protocols of Quantum Energy Teleportaion (QET)<n>Our protocol offers enhanced efficiency, reduces experimental complexity on quantum computers, and enables instantaneous energy charging.
  arXiv  Detail & Related papers  (2024-07-01T22:14:27Z)
• Simulating electronic structure on bosonic quantum computers [34.84696943963362]
  We propose an approach to map the electronic Hamiltonian into a qumode bosonic problem that can be solved on bosonic quantum devices.<n>This work establishes a new pathway for simulating many-fermion systems, highlighting the potential of hybrid qubit-qumode quantum devices.
  arXiv  Detail & Related papers  (2024-04-16T02:04:11Z)
• Nonreciprocal Quantum Batteries [0.0]
  We introduce nonreciprocity through reservoir engineering during the charging process, resulting in a substantial increase in energy accumulation. Despite local dissipation, the nonreciprocal approach demonstrates a fourfold increase in battery energy. In a broader context, the concept of nonreciprocal charging has significant implications for sensing, energy capture, and storage technologies.
  arXiv  Detail & Related papers  (2024-01-10T11:50:03Z)
• Quantum data learning for quantum simulations in high-energy physics [55.41644538483948]
  We explore the applicability of quantum-data learning to practical problems in high-energy physics. We make use of ansatz based on quantum convolutional neural networks and numerically show that it is capable of recognizing quantum phases of ground states. The observation of non-trivial learning properties demonstrated in these benchmarks will motivate further exploration of the quantum-data learning architecture in high-energy physics.
  arXiv  Detail & Related papers  (2023-06-29T18:00:01Z)
• Measurement Induced Synthesis of Coherent Quantum Batteries [0.0]
  We propose a conditional synthesis of $N$ independent two-level systems (TLS) with partial quantum coherence obtained from an environment to one coherent system. The measurement process acts here as a Maxwell demon synthesizing the coherent energy of individual TLS to one large coherent quantum battery.
  arXiv  Detail & Related papers  (2022-11-16T12:33:34Z)
• Experimental analysis of energy transfers between a quantum emitter and light fields [0.0]
  Energy transfer between quantum systems can be achieved through an effective unitary interaction or through the generation of entanglement. Here we propose and implement experimental protocols to access these energy transfers in interactions between a quantum emitter and light fields.
  arXiv  Detail & Related papers  (2022-02-02T16:18:11Z)

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.