Collective enhancement in dissipative quantum batteries

Carrasco, Javier; Maze, J. R.; Hermann-Avigliano, Carla; Barra, Felipe

doi:10.1103/physreve.105.064119

Cited by 27 publications

(9 citation statements)

References 47 publications

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“…To explain why the appearance of bound state leads to the robustness of charging process, let us remember that the initial state (22) can be expanded in terms of the eigenstates of total Hamiltonian (17), i.e.,…”

Section: Relation Between Robust Charging Process and Formation Of Bo...mentioning

confidence: 99%

“…On the other hand, robustness of a quantum battery against the dissipation is provided appropriately when Floquet bound states are formed, in a controllable way, in the quasienergy spectrum of the total system consisting of the charger-battery setup and their respective environments [20]. Effects of collective charging and quantum coherence on the performance of dissipative quantum batteries have been considered in [21,22]. The use of linear feedback control to power a qubit charger coupled to a finite-dimensional quantum battery [23] and the optimal charging of a dissipative spin chain quantum battery via feedback control based on homodyne measurement [24], have been explored.…”

Section: Introductionmentioning

confidence: 99%

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Mechanism of controlling robust and stable charging of open quantum batteries

Behzadi

Kasani

2022

J. Phys. A: Math. Theor.

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Quality of charging and discharging of energy in quantum batteries are mostly affected by environmental dissipations, so the advantages of using such devices depend on the protection of them from the dissipations. In this work, we show that under a certain engineering of coupling strengths of each reservoir modes with elements of charging process (charger and battery), the extension of dissipative reservoir leads to a robust charging against the arisen dissipation. The extension of reservoir is provided by auxiliary systems each of which is similar to the coupled charger-battery system and has the same interactions with the reservoir modes as of the charger and battery constituents. It is demonstrated that the robustness of charging process is well controlled by the number of involved auxiliary systems. Furthermore, a method for stable charging is proposed which provides storing energy in a loss-free dark state of the battery. Also, we abserve that the robustness of charging process is related to formation of bound state for the total system (charger-battery-extended reservoir) which in turns can be manipulated by the number of involved auxiliary systems.

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Section: Relation Between Robust Charging Process and Formation Of Bo...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Mechanism of controlling robust and stable charging of open quantum batteries

Behzadi

Kasani

2022

J. Phys. A: Math. Theor.

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“…When the battery enters into an interaction with the charger, it transitions from a lower energy level into the higher ones and will be charged. So far, a variety of powerful charging protocols have been proposed in different platforms, including two-level systems [8][9][10], harmonic oscillators [11], and hybrid light-matter systems [12][13][14]. Some proposals have been also devoted to implement QBs based on the two-level systems such as trapped ions [15,16], cold atoms [17] and superconducting qubits [18].…”

Section: Introductionmentioning

confidence: 99%

Enhancing the performance of an open quantum battery by adjusting its velocity

Mojaveri,

Bahrbeig,

Fasihi

et al. 2023

Preprint

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The performance of open quantum batteries (QBs) is severely limited by decoherence due to the interaction with the surrounding environment. So, protecting the charging processes against decoherence is of great importance for realizing QBs. In this work we address this issue by developing a charging process of a qubit-based open QB composed of a qubit-battery and a qubit-charger, where each qubit moves inside an independent cavity reservoir. Our results show that, in both the Markovian and non-Markovian dynamics, the charging characteristics, including the charging energy, efficiency and ergotropy, regularly increase with increasing the speed of charger and battery qubits. Interestingly, when the charger and battery move with higher velocities, the initial energy of the charger is completely transferred to the battery in the Markovian dynamics. In this situation, it is possible to extract the total stored energy as work for a long time. Our findings show that open moving-qubit systems are robust and reliable QBs, thus making them a promising candidate for experimental implementations.

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“…Currently, extensive research [ 22–51 ] have been carried out to obtain the high‐performance quantum batteries. For instance, in ref.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Charging in Common Environments Compared to Independent Environments for Two‐Level Systems

Chen

et al. 2022

Annalen der Physik

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The charging process of a quantum battery (i.e., a two‐level system) is studied in two scenarios, that is, a quantum battery and a charger are coupled to the common reservoir environments or coupled to their respective independent environments. In the common reservoir scenario, it is shown that the optimal charging process can be realized by increasing the number of environments and setting the same coupling strength between battery‐reservoirs and charger‐reservoirs. In the independent reservoir scenario, however, it is shown that decreasing either the number of reservoir environments or the coupling strength would enhance the charging performance. These results demonstrate that the charging performance of quantum batteries can be significantly improved by constructing common environments. This may be of help to the realization of the quantum battery with optimal charging performance in multiple environments.

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Collective enhancement in dissipative quantum batteries

Cited by 27 publications

References 47 publications

Mechanism of controlling robust and stable charging of open quantum batteries

Mechanism of controlling robust and stable charging of open quantum batteries

Enhancing the performance of an open quantum battery by adjusting its velocity

Enhanced Charging in Common Environments Compared to Independent Environments for Two‐Level Systems

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