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Sunburst quantum Ising battery
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DOI：10.1103/PhysRevA.110.012227.png)
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We study the energy-transfer process in the recently proposed sunburst quantum Ising model, which consists of two interacting integrable systems: a transverse Ising chain with a very small transverse field and a finite number of external isolated qubits. We show that in this model of the quantum battery, coupling between the battery and charger can be used to optimize the ergotropy, which is the maximum amount of energy that can be extracted from the battery. At the same time, maximum charging power increases with the coupling strength, allowing for the simultaneous optimization of both ergotropy and charging power in the strong-coupling limit. Furthermore, we show that both ergotropy and charging power are independent of the initial state of the charger.
Keyword:
ENTANGLEMENT ENTROPY
期刊
IF:
2.9
论文数:
69
被引数:
14.3W
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