Quantum battery with ultracold atoms: Bosons versus fermions

Kanti, Konar, Tanoy; Chandra, Lakkaraju, Leela Ganesh; Ghosh, Srijon; Sen, Aditi

doi:10.1103/physreva.106.022618

Cited by 22 publications

(5 citation statements)

References 74 publications

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“…When κ = 0, the JCH model has an analytical solution. The present simulation results overlap exactly with the analytical results obtained from the Rabi matrix of equation (6). This serves as the starting point for the comparison of the power for larger JCH systems.…”

Section: Jch Resultssupporting

confidence: 81%

Quench dynamics in the Jaynes-Cummings-Hubbard and Dicke models

Hogan,

Martin

2024

Phys. Scr.

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Both the Jaynes-Cummings-Hubbard (JCH) and Dicke models can be thought of as idealised models of a quantum battery. In this paper we numerically investigate the charging properties of both of these models. The two models diﬀer in how the two-level systems are contained in cavities. In the Dicke model, the N two-level systems are contained in a single cavity, while in the JCH model the two-level systems each have their own cavity and are able to pass photons between them. In each of these models we consider a scenario where the two-level systems start in the ground state and the coupling parameter between the photon and the two-level systems is quenched. Each of these models display a maximum charging power that scales with the size of the battery N and no super charging was found. Charging power also scales with the square root of the average number of photons per two-level system m for both models. Finally, in the JCH model, the power was found to charge inversely with the photon-cavity coupling κ.

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Section: Jch Resultssupporting

confidence: 81%

Quench dynamics in the Jaynes-Cummings-Hubbard and Dicke models

Hogan,

Martin

2024

Phys. Scr.

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“…Squeezing may be interesting for modern applications in quantum sensing and for quantum information processing, while here, it is interesting to note that the quadrature variances display asymptotes at Ω ð1Þ c , the onset of the dynamical instability discussed earlier. Within wider quantum battery research, squeezing has been recently studied in the context of a coherent squeezing charging mechanism and an incoherent squeezed thermal bath 71 , as well as battery charging with local squeezing 72 , which points to its utility within quantum technological research.…”

Section: Resultsmentioning

confidence: 99%

A quantum battery with quadratic driving

Downing,

Ukhtary

2023

Commun Phys

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Quantum batteries are energy storage devices built using quantum mechanical objects, which are developed with the aim of outperforming their classical counterparts. Proposing optimal designs of quantum batteries which are able to exploit quantum advantages requires balancing the competing demands for fast charging, durable storage and effective work extraction. Here we study theoretically a bipartite quantum battery model, composed of a driven charger connected to an energy holder, within two paradigmatic cases of a driven-dissipative open quantum system: linear driving and quadratic driving. The linear battery is governed by a single exceptional point which splits the response of the battery into two regimes, one of which induces a good amount of useful work. Quadratic driving leads to a squeezed quantum battery, which generates plentiful useful work near to critical points associated with dissipative phase transitions. Our theoretical results may be realized with parametric cavities or nonlinear circuits, potentially leading to the manifestation of a quantum battery exhibiting squeezing.

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“…This involves the use of ergotropy and finding the most effective unitary operation to bring the system to its corresponding passive state [21,22], where the battery is considered empty. To the best of our knowledge, research on closed [10-12, 23, 24] and open quantum batteries [13,[25][26][27][28][29][30][31][32][33] has made significant progress. In the first scenario, the battery and charger are not impacted by the environment, including Dicke quantum batteries [10,12], Random quantum batteries [23], spin-chain quantum battery [11], a quantum battery made of non-interacting two-level atoms that can be fully charged using a harmonic charging field [24], and so on.…”

Section: Introductionmentioning

confidence: 99%

Quantum battery charging by non-equilibrium steady-state currents

Kamin

Abuali

Ness

et al. 2023

J. Phys. A: Math. Theor.

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We present an analysis of the availability and maximum extractable work of quantum batteries in the presence of charge and/or heat steady-state currents. Quantum batteries are modeled as non-interacting open quantum systems (mesoscopic systems) strongly coupled to two thermal and particle reservoirs within the framework of non-equilibrium Green’s function theory in a steady-state regime. We found that the battery can be charged manifestly by a steady-state charge current compared to heat one, especially, in an oﬀ-resonant transport regime. It allows us to reliably access the performance of the quantum batteries in the high bias-charging regime.

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Quantum battery with ultracold atoms: Bosons versus fermions

Cited by 22 publications

References 74 publications

Quench dynamics in the Jaynes-Cummings-Hubbard and Dicke models

Quench dynamics in the Jaynes-Cummings-Hubbard and Dicke models

A quantum battery with quadratic driving

Quantum battery charging by non-equilibrium steady-state currents

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