Entanglement, coherence, and charging process of quantum batteries

Kamin, F. H.; Tabesh, F. T.; Salimi, S.; Santos, Alan C.

doi:10.1103/physreve.102.052109

Cited by 81 publications

(52 citation statements)

References 22 publications

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“…( 6). Therefore, this system does not need a time-dependent external field for the charging process, differently from the several kinds of QBs already proposed in literature [7,9,10,15,18,42,43].…”

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confidence: 99%

Quantum battery based on quantum discord at room temperature

Cruz,

Anka,

Reis

et al. 2021

Preprint

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The study of advanced quantum devices for energy storage has attracted the attention of the scientific community in the past few years. Although several theoretical progresses have been achieved recently, experimental proposals of platforms operating as quantum batteries under ambient conditions are still lacking. In this context, this work presents a feasible realization of a quantum battery in a carboxylate-based metal complex, which can store a finite amount of extractable work under the form of quantum discord at room temperature, and recharge by thermalization with a reservoir. Moreover, the stored work can be evaluated through non-destructive measurements of the compound's magnetic susceptibility. These results pave the way for the development of enhanced energy storage platforms through material engineering.

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confidence: 99%

Quantum battery based on quantum discord at room temperature

Cruz,

Anka,

Reis

et al. 2021

Preprint

Self Cite

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“…These predictions have inspired a substantial body of theoretical research aiming to harness quantum or many-body effects in order to improve the performance of energy storage devices. Numerous quantum battery architectures have since been proposed [19][20][21][22][23][24][25][26][27] and the effects of different physical phenomena -ranging from entanglement [28,29] to many-body localisation [30] -have been extensively investigated.…”

Section: Introductionmentioning

confidence: 99%

Charging a quantum battery with linear feedback control

Mitchison

Goold

Prior

2021

Quantum

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Energy storage is a basic physical process with many applications. When considering this task at the quantum scale, it becomes important to optimise the non-equilibrium dynamics of energy transfer to the storage device or battery. Here, we tackle this problem using the methods of quantum feedback control. Specifically, we study the deposition of energy into a quantum battery via an auxiliary charger. The latter is a driven-dissipative two-level system subjected to a homodyne measurement whose output signal is fed back linearly into the driving field amplitude. We explore two different control strategies, aiming to stabilise either populations or quantum coherences in the state of the charger. In both cases, linear feedback is shown to counteract the randomising influence of environmental noise and allow for stable and effective battery charging. We analyse the effect of realistic control imprecisions, demonstrating that this good performance survives inefficient measurements and small feedback delays. Our results highlight the potential of continuous feedback for the control of energetic quantities in the quantum regime.

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“…Quantum batteries were originally established either on a single two-level system [see Fig. 1(a)] (qubit) [8,12,25], or on an array of two-level systems [9,10,13,14,20,21,24]. They are charged by external energy sources that are single-frequency optical fields in most cases, and then are discharged in a completely invertible way.…”

Section: Introductionmentioning

confidence: 99%

Fast and stable charging via a shortcut to adiabaticity

Hu,

Qi,

Jing

2021

Preprint

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Quantum battery is an emerging subject in the field of quantum thermodynamics, which is applied to charge, store and dispatch energy in quantum systems. In this work, we propose a fast and stable charging protocol based on the adiabatic evolution for the dark state of a three-level quantum battery. It combines the conventional stimulated Raman adiabatic passage (STIRAP) and the quantum transitionless driving technique. The charging process can be accelerated up to nearly one order in magnitude even under constraint of the strength of counter-diabatic driving. To perform the charging protocol in the Rydberg atomic system as a typical platform for STIRAP, the prerequisite driving pulses are modified to avoid the constraint of the forbidden transition. Moreover, our protocol is found to be more robust against the environmental dissipation and dephasing than the conventional STIRAP.

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Entanglement, coherence, and charging process of quantum batteries

Cited by 81 publications

References 22 publications

Quantum battery based on quantum discord at room temperature

Quantum battery based on quantum discord at room temperature

Charging a quantum battery with linear feedback control

Fast and stable charging via a shortcut to adiabaticity

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