Closed-loop three-level charged quantum battery

Dou, Fu-Quan; Wang, Yuan-Jin; Sun, Jianan

doi:10.1209/0295-5075/131/43001

Cited by 41 publications

(20 citation statements)

References 40 publications

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“…All these results indicate that the quantum devices based on the quantum spin-j model may lead to a better efficiency than that of the quantum spin- 1 2 model. In this work, we will demonstrate that it is indeed the case by considering an energy storage device, quantum battery [28][29][30][31][32][33][34][35][36][37][38][39][40]. A ground state or canonical equilibrium state of an interacting Hamiltonian is the initial state of the battery [34,39] while the energy is stored (extracted) in (from) the battery by applying a local magnetic field.…”

Section: Introductionmentioning

confidence: 93%

“…In recent years, a considerable amount of works have been carried out to understand the performance of the quantum battery in presence of decoherence, impurities, etc., and the property of the system which leads to quantum advantage. However, all the investigations are restricted to multiqubit systems except for very few recent works on three-level systems [37,38].…”

Section: Introductionmentioning

confidence: 99%

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Dimensional enhancements in a quantum battery with imperfections

Ghosh,

2021

Preprint

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Power storage devices are shown to increase their efficiency if they are designed by using quantum systems. We show that the average power output of a quantum battery based on a quantum interacting spin model, charged via a local magnetic field, can be enhanced with the increase of spin quantum number. In particular, we demonstrate such increment in the power output when the initial state of the battery is prepared as the ground or canonical equilibrium state of the spin-j XY model and the bilinear-biquadratic spin-j Heisenberg chain (BBH) in presence of the transverse magnetic field. Interestingly, we observe that in the case of the XY model, a trade-off relation exists between the range of interactions in which the power increases and the dimension while for the BBH model, the improvements depend on the phase in which the initial state is prepared. Moreover, we exhibit that such dimensional advantages persist even when the battery-Hamiltonian has some defects or when the initial battery-state is prepared at finite temperature.

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Section: Introductionmentioning

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Dimensional enhancements in a quantum battery with imperfections

Ghosh,

2021

Preprint

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“…A variety of Quantum battery concepts have been proposed in the literature [7]- [10], while considering the possibilities of closed-and open-system designs. Evidently, there are a wide range of challenges in the open-system designs of the Quantum batteries [12]. Therefore, we consider the closed-system design for our analysis.…”

Section: System Modelmentioning

confidence: 99%

“…However, this possibility is theoretically feasible within a loss-less closed-system, often leading to a quasistable state. It is noteworthy that this phenomenon remains the backbone of several closed-system type of Quantum batteries [12]. Ensuring this condition is difficult in practice, but a mechanism could be sought wherein an radio-frequency (RF)based wireless energy harvesting (EH) method is utilized.…”

Section: Introductionmentioning

confidence: 99%

Modeling and Optimization of RF-Energy Harvesting-assisted Quantum Battery System

Gautam

Sharma

Chatzinotas

et al. 2021

2021 IEEE 93rd Vehicular Technology Conference (VTC2021-Spring)

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The quest for finding a small-sized energy supply to run the small-scale wireless gadgets, with almost an infinite lifetime, has intrigued humankind since past several decades. In this context, the concept of Quantum batteries has come into limelight more recently to serve the purpose. However, the main issue revolving around the closed-system design of Quantum batteries is to ensure a loss-less environment, which is extremely difficult to realize in practice. In this paper, we present the modeling and optimization aspects of a Radio-Frequency (RF) Energy Harvesting (EH) assisted Quantum battery, wherein several EH modules (in the form of micro-or nano-sized integrated circuits (ICs)) help each of the involved Quantum sources achieve the so-called quasi-stable state. Specifically, a micro-controller manages the overall harvested energy from the RF-EH ICs and a photon emitting device, such that the emitted photons are absorbed by the electrons in the Quantum sources. In order to precisely model and optimize the considered framework, we formulate a transmit power minimization problem for an RFbased wireless system to optimize the number of RF-EH ICs under the given EH constraints at the Quantum battery-enabled wireless device. We obtain an analytical solution to the abovementioned problem using a rational approach, while additionally seeking another solution obtained via a non-linear program solver. The effectiveness of the proposed technique is reported in the form of numerical results by taking a range of system parameters into account.

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“…In the quest for such quantum advantage and potential experimental implementations of QBs, QB has been proposed in various models, such as two-level systems (TLSs) 24,[27][28][29][30] , three-level systems 37,39,50 , quantum cavity model [14][15][16][17][51][52][53][54] , interacting spin chain model 31,48,49 , and Sachdev-Ye-Kitaev model 26,55 .…”

Section: Introductionmentioning

confidence: 99%

Extended Dicke quantum battery with interatomic interactions and driving field

Dou,

Lu,

Wang

et al. 2021

Preprint

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We investigate the charging process of quantum battery (QB) systems in an extended Dicke model with both atomic interactions and an external driving field. We focus on the effects of the atomic interaction and the external driving field on the charging performance of QB and find that the maximum stored energy of QB has a critical phenomenon. We analyze the critical behavior and obtain the analytical expression of the critical atomic interaction. The dependence of the maximum stored energy, the energy quantum fluctuations and the maximum charging power on the number N of the two-level systems are also discussed. In particular, for the maximum charging power, we obtain the quantum advantage of the QB, which approximately satisfies a superlinear scaling relation Pmax ∝ N α , where scaling exponent α varies with the number N of the two-level systems. In the ultra-strong coupling regime, the atomic interaction can lead to a faster battery charging, and the quantum advantage α = 1.88 can be achieved. While in the deep-strong coupling regime, the quantum advantage of the QB's maximum charging power is the same as that of the Dicke QB, i.e., α = 1.5.

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Closed-loop three-level charged quantum battery

Cited by 41 publications

References 40 publications

Dimensional enhancements in a quantum battery with imperfections

Dimensional enhancements in a quantum battery with imperfections

Modeling and Optimization of RF-Energy Harvesting-assisted Quantum Battery System

Extended Dicke quantum battery with interatomic interactions and driving field

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