Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

arXiv:2301.13640 · Physical Review A

Vacuum-enhanced charging of a quantum battery

Tiago F. F. Santos, Yohan Vianna de Almeida, Marcelo França Santos

Published Mar 6, 2023• 35 citations
arXivHTMLPDF

Abstract

Quantum batteries are quantum systems that store energy which can then be used for quantum tasks. One relevant question about such systems concerns the differences and eventual advantages over their classical counterparts, whether in the efficiency of the energy transference, input power, total stored energy, or other relevant physical quantities. Here, we show how a purely quantum effect related to the vacuum of the electromagnetic field can enhance the charging of a quantum battery. In particular, we demonstrate how an anti-Jaynes-Cummings interaction derived from an off-resonant Raman configuration can be used to increase the stored energy of an effective two-level atom when compared to its classically driven counterpart, eventually achieving full charging of the battery with zero entropic cost.

DOI
10.1103/physreva.107.032203

Related papers

Reliable quantum advantage in quantum battery charging

Davide Rinaldi, Radim Filip, Dario Gerace +1 more

Quantum batteries represent one of the most promising applications of quantum thermodynamics, whose goal is not only to store energy inside small quantum systems but also to potentially leverage genuine quantum effects to outperform classical counterparts. In this context, however, energy fluctuations become extremely relevant and have a significant impact on the charging efficiency. In our work, we consider a simple yet paradigmatic model in which a flying qubit (the battery) coherently interacts with a single mode optical cavity (the charger) through a number conserving Jaynes-Cummings interaction. By making use of full-counting statistics techniques, we fully characterize the average charging power, its fluctuations and the associated charging efficiency for several different choices of initial states of the optical cavity, demonstrating that preparing the latter in a genuinely quantum non-Gaussian Fock state (rather than a classical or even non-classical Gaussian state) leads to a definite and (in principle) measurable advantage in all these figures of merit.

arXiv:2412.15339•Physical Review A•Jun 9, 2025•19 citations

Cooperative isentropic charging of hybrid quantum batteries

Yohan Vianna de Almeida, Tiago F. F. Santos, Marcelo França Santos

Quantum batteries are quantum systems used to store energy to be later extracted by an external agent in the form of work to perform some task. Here we study the charging of a hybrid quantum battery via a collisional model mediated by an anti-Jaynes-Cummings interaction obtained from an off-resonant Raman configuration. The battery is made of two distinct components: a stationary infinite-dimensional single quantum system (e.g., a harmonic oscillator) and a stream of small-dimensional ones (e.g., qutrits). The charging protocol consists of sequentially interacting the harmonic oscillator with each element of the stream, one at a time, under the action of an external energy source and the goal is to analyze how the charging of both the harmonic oscillator and the qutrits is affected by the correlation properties of the stream.

arXiv:2310.20680•Physical Review A•Nov 17, 2023•10 citations

Charging a Quantum Many-Body Battery

Thao P. Le

The operation of conventional batteries relies primarily on electrochemical reactions and classical physics. However, an important question is whether quantum effects, such as entanglement, can lead to a significant change in the behaviour of a battery. In addition to being a fundamental problem, this is of technological interest, since there is the prospect of exploiting quantum effects to increase charging power and energy density of a battery, and to overcome the limitations of classical batteries. In this thesis, we investigate how to charge a battery composed of quantum systems and determine which quantum effects play a part in this charging. We find that certain broken symmetries in the battery model give rise to entanglement and enhance charging relative to other batteries without entanglement. We use Heisenberg XXZ spin chains as the basic model of our quantum many-body battery. The Heisenberg spin chain is a paradigmatic model of solid-state physics; simple, yet able to describe the magnetic behaviour of more complex physical systems. The models we consider either have a nearest neighbour spin-spin coupling interaction or a long range 1/r interaction. Local identical charging fields are used to deposit work in the battery. We also investigate adding noise into the charging process, and consider the performance and stability of the spin chain battery in the presence of a heat bath. We compare the different spin chains with one another, and also compare them with several different classical models, in order to determine whether or not there is a “quantum advantage”. We find that whether or not there is a quantum advantage depends on which models and what quantity we are comparing.

•Jan 1, 2017•0 citations

Quantum battery based on dipole-dipole interaction and external driving field

Wuji Zhang, Shuyue Wang, Chunfeng Wu +1 more

The Dicke model is a fundamental model in quantum optics, which describes the interaction between quantum cavity field and a large ensemble of two-level atoms. In this work, we propose an efficient charging quantum battery achieved by considering an extension Dicke model with dipole-dipole interaction and an external driving field. We focus on the influence of the atomic interaction and the driving field on the performance of the quantum battery during the charging process and find that the maximum stored energy exhibits a critical phenomenon. The maximum stored energy and maximum charging power are investigated by varying the number of atoms. When the coupling between atoms and cavity is not very strong, compared to the Dicke quantum battery, such quantum battery can achieve more stable and faster charging. In addition, the maximum charging power approximately satisfies a superlinear scaling relation P_{max}∝βN^{α}, where the quantum advantage α=1.6 can be reached via optimizing the parameters.

arXiv:2305.03294•Physical review. E•May 19, 2023•20 citations

Enhancement of Charging Performance of Micromaser Quantum Battery via Classical Driving Field and Optical Parametric Amplifier

Jia Zuo, Sumei Huang, Li Deng +1 more

In this paper, we propose a scheme where the charging performance of micromaser quantum batteries can be improved. Our physical system includes a quantized cavity field interacting with a series of identical two-level atoms one by one. In order to improve the performance of the battery, two methods are introduced: one is using a controlling field to drive atoms, and the other is placing OPA crystals in the cavity. Under these different methods, we discuss the influence of different parameters on battery capacity. Finally, combining the two methods for charging yields better results than using either of them alone. These protocols are found to be stable and robust, and most of the stored energy in the quantum batteries can be extracted for work. Our scheme has a potential applications in quantum energy storage devices.

Photonics•Feb 21, 2025•0 citations

Ultrafast charging quantum battery with cavity–cavity interactions

Zongqi Wang, Zefeng Huang, Dayang Zhang +4 more

Abstract We present a quantum battery model comprising two lossless cavities that interact through a controlled photon–hopping mechanism, each housing an isolated two-level atom. This study explores the possibility of influencing the interaction between cavities within the traditional two single–cavity working modes, thereby paving the way for enhanced charging performance. By solving the generalized double Jaynes–Cummings model with cavity–cavity interactions, we demonstrate the positive impact of such interactions on battery charging, enabling the quantum battery to outperform the single–cavity case in terms of charging time and average charging power. Additionally, we investigate the influence of different cavity–cavity interaction strengths on charging efficiency and attempt to explain the underlying mechanisms by analyzing the entanglement within the system.

Chinese Physics B•Aug 26, 2025•0 citations
Quantum batteries are quantum systems that store energy which can then be used for quantum tasks. One relevant question about such systems concerns the differences and eventual advantages over their classical counterparts, whether in the efficiency of the energy transference, input power, total stored energy, or other relevant physical quantities. Here, we show how a purely quantum effect related to the vacuum of the electromagnetic field can enhance the charging of a quantum battery. In particular, we demonstrate how an anti-Jaynes-Cummings interaction derived from an off-resonant Raman configuration can be used to increase the stored energy of an effective two-level atom when compared to its classically driven counterpart, eventually achieving full charging of the battery with zero entropic cost.
Quantum batteries represent one of the most promising applications of quantum thermodynamics, whose goal is not only to store energy inside small quantum systems but also to potentially leverage genuine quantum effects to outperform classical counterparts. In this context, however, energy fluctuations become extremely relevant and have a significant impact on the charging efficiency. In our work, we consider a simple yet paradigmatic model in which a flying qubit (the battery) coherently interacts with a single mode optical cavity (the charger) through a number conserving Jaynes-Cummings interaction. By making use of full-counting statistics techniques, we fully characterize the average charging power, its fluctuations and the associated charging efficiency for several different choices of initial states of the optical cavity, demonstrating that preparing the latter in a genuinely quantum non-Gaussian Fock state (rather than a classical or even non-classical Gaussian state) leads to a definite and (in principle) measurable advantage in all these figures of merit.
Quantum batteries are quantum systems used to store energy to be later extracted by an external agent in the form of work to perform some task. Here we study the charging of a hybrid quantum battery via a collisional model mediated by an anti-Jaynes-Cummings interaction obtained from an off-resonant Raman configuration. The battery is made of two distinct components: a stationary infinite-dimensional single quantum system (e.g., a harmonic oscillator) and a stream of small-dimensional ones (e.g., qutrits). The charging protocol consists of sequentially interacting the harmonic oscillator with each element of the stream, one at a time, under the action of an external energy source and the goal is to analyze how the charging of both the harmonic oscillator and the qutrits is affected by the correlation properties of the stream.
The operation of conventional batteries relies primarily on electrochemical reactions and classical physics. However, an important question is whether quantum effects, such as entanglement, can lead to a significant change in the behaviour of a battery. In addition to being a fundamental problem, this is of technological interest, since there is the prospect of exploiting quantum effects to increase charging power and energy density of a battery, and to overcome the limitations of classical batteries. In this thesis, we investigate how to charge a battery composed of quantum systems and determine which quantum effects play a part in this charging. We find that certain broken symmetries in the battery model give rise to entanglement and enhance charging relative to other batteries without entanglement. We use Heisenberg XXZ spin chains as the basic model of our quantum many-body battery. The Heisenberg spin chain is a paradigmatic model of solid-state physics; simple, yet able to describe the magnetic behaviour of more complex physical systems. The models we consider either have a nearest neighbour spin-spin coupling interaction or a long range 1/r interaction. Local identical charging fields are used to deposit work in the battery. We also investigate adding noise into the charging process, and consider the performance and stability of the spin chain battery in the presence of a heat bath. We compare the different spin chains with one another, and also compare them with several different classical models, in order to determine whether or not there is a “quantum advantage”. We find that whether or not there is a quantum advantage depends on which models and what quantity we are comparing.
The Dicke model is a fundamental model in quantum optics, which describes the interaction between quantum cavity field and a large ensemble of two-level atoms. In this work, we propose an efficient charging quantum battery achieved by considering an extension Dicke model with dipole-dipole interaction and an external driving field. We focus on the influence of the atomic interaction and the driving field on the performance of the quantum battery during the charging process and find that the maximum stored energy exhibits a critical phenomenon. The maximum stored energy and maximum charging power are investigated by varying the number of atoms. When the coupling between atoms and cavity is not very strong, compared to the Dicke quantum battery, such quantum battery can achieve more stable and faster charging. In addition, the maximum charging power approximately satisfies a superlinear scaling relation P_{max}∝βN^{α}, where the quantum advantage α=1.6 can be reached via optimizing the parameters.
In this paper, we propose a scheme where the charging performance of micromaser quantum batteries can be improved. Our physical system includes a quantized cavity field interacting with a series of identical two-level atoms one by one. In order to improve the performance of the battery, two methods are introduced: one is using a controlling field to drive atoms, and the other is placing OPA crystals in the cavity. Under these different methods, we discuss the influence of different parameters on battery capacity. Finally, combining the two methods for charging yields better results than using either of them alone. These protocols are found to be stable and robust, and most of the stored energy in the quantum batteries can be extracted for work. Our scheme has a potential applications in quantum energy storage devices.
Abstract We present a quantum battery model comprising two lossless cavities that interact through a controlled photon–hopping mechanism, each housing an isolated two-level atom. This study explores the possibility of influencing the interaction between cavities within the traditional two single–cavity working modes, thereby paving the way for enhanced charging performance. By solving the generalized double Jaynes–Cummings model with cavity–cavity interactions, we demonstrate the positive impact of such interactions on battery charging, enabling the quantum battery to outperform the single–cavity case in terms of charging time and average charging power. Additionally, we investigate the influence of different cavity–cavity interaction strengths on charging efficiency and attempt to explain the underlying mechanisms by analyzing the entanglement within the system.