Discharging dynamics of topological batteries

Patil, Vishal; Kos, Žiga; Ravnik, Miha; Dunkel, Jörn

doi:10.1103/physrevresearch.2.043196

Cited by 13 publications

(5 citation statements)

References 46 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Then we substitute the p(12) and p (15), which are obtained from Eq.(34d)-Eq. (34h), into the above equation yields…”

Section: The Optimal Initial State Of the Tcqbmentioning

confidence: 99%

“…When the battery size is small enough that its dynamics are described by quantum mechanics, it is necessary to consider the impact of quantum effects on batteries. Based on this, a series of quantum batteries(QBs) have been studied in recent years [1][2][3][4][5][6][7][8][9][10][11][12][13][14], including Dicke quantum battery [9,10], spin-chain quantum batteries [11,12], Random quantum batteries [13], Sachdev-Ye-Kitaev Batteries [14], topological batteries [15], and so on. In considering the impact of quantum entanglement on quantum batteries, Alicki and Fannes found that global entangling operations could extract more work from a quantum battery than local operations [1].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Optimal state for a Tavis-Cummings quantum battery via the Bethe ansatz method

Lu,

Chen,

Kuang

et al. 2021

Preprint

View full text Add to dashboard Cite

“…Then we substitute the p(12) and p (15), which are obtained from Eq.(34d)-Eq. (34h), into the above equation yields…”

Section: The Optimal Initial State Of the Tcqbmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Optimal state for a Tavis-Cummings quantum battery via the Bethe ansatz method

Lu,

Chen,

Kuang

et al. 2021

Preprint

View full text Add to dashboard Cite

“…Ever since the concept of quantum battery was proposed by Alicke and Fannes [1], several quantum battery models have been put forward in different physical systems, for example, the spin or resonator chain model [2][3][4][5][6][7][8][9][10][11][12][13][14][15], the Tavis-Cummings and Dicke model in quantum optics [16][17][18][19][20][21], Rydberg atom system [22]. In some of these systems, the Floquent technology has been used to enhance the performance of the quantum battery [23][24][25].…”

Section: Introductionmentioning

confidence: 99%

Quantum battery in nonequilibrium reservoirs

Wang¹,

Yu²,

Wang³

2022

Preprint

View full text Add to dashboard Cite

We investigate a quantum battery system in which the coupled two-level charger and battery are immersed in nonequilbrium boson or fermion reservoirs. Based on the Redfield master equation, we consider the change of the energy spectrum induced by the external driving to the charger. When the charger and the battery possess the same transition frequency and the charger is driven in resonance, a bistability can emerge with the closure of the Liouvillian gap. As a result, the efficiency of the battery depends on the initial state of the charger-battery system, and certain types of entangled initial states can enhance the efficiency. In the non-resonance driving regime, the efficiency of the quantum battery can be optimized by the compensation mechanism for both the boson and fermion reservoirs. Our investigation is helpful to the design and optimization of quantum battery in the nonequlibrium open system.

show abstract

“…Quantum battery is not only a scientifically interesting subject, but is a practical need. Devising a quantum battery in various forms has constituted an emerging field of nano-devices for quantum thermodynamics, such as solid-state batteries [1,2], topological batteries [3][4][5][6], and spin batteries [7][8][9]. The contemporary development of quantum battery also inspires the relevant investigations in quantum information about the work extraction [10] and the optimal finite-time operation [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

High-capacity and high-power collective charging with spin chargers

Huangfu,

Jing

2021

Preprint

View full text Add to dashboard Cite

Quantum battery works as a micro-or nano-device to store and redistribute energy at the quantum level. Here we propose a spin-charger protocol, in which the battery cells are charged by a finite number of spins through a general Heisenberg XY interaction. Under the isotropic interaction, the spin-charger protocol is endowed with a higher capacity in terms of the maximum stored energy than the conventional protocols, where the battery is charged by a continuous-variable system, e.g., a cavity mode. By tuning the charger size, a trade-off between the maximum stored energy and the average charging power is found in comparison to the cavity-charger protocol in the Tavis-Cummings model. Quantum advantage of our protocol is manifested by the scaling behavior of the optimal average power with respect to the battery size, in comparing the collective charging scheme to its parallel counterpart. We also discuss the detrimental effect on the charging performance from the anisotropic interaction between the battery and the charger, the non-ideal initial states for both of them, and the crosstalk among the charger spins. A strong charger-charger interaction can be used to decouple the battery and the charger. Our findings about the advantages of the spin-charger protocol over the conventional cavity-charger protocols, including the high capacity of energy storage and the superior power-law in the collective charging, provide an insight to exploit an efficient quantum battery based on the spin-spin-environment model.

show abstract

Discharging dynamics of topological batteries

Cited by 13 publications

References 46 publications

Optimal state for a Tavis-Cummings quantum battery via the Bethe ansatz method

Optimal state for a Tavis-Cummings quantum battery via the Bethe ansatz method

Quantum battery in nonequilibrium reservoirs

High-capacity and high-power collective charging with spin chargers

Contact Info

Product

Resources

About