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arXiv 2602.15467quant-phcond-mat.mes-hall
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簇伊辛量子电池可以模仿超广义充电功率

Cluster Ising quantum batteries can mimic super-extensive charging power

Università degli studi di Genova(热那亚大学);CNR-SPIN(意大利国家研究委员会自旋科学研究所)

Anna Pavone, Federico Luigi Cavagnaro, Matteo Carrega, Riccardo Grazi, Dario Ferraro, Niccolò Traverso Ziani

AI总结:

研究展示簇伊辛模型在特定参数下可实现超广义充电功率,尽管属于可积分模型,且该现象在有限大系统中受限,但具有鲁棒性。

摘要:

量子电池是一种能够按需存储和释放能量的微型设备,因其内在的能量和时间尺度可以与其他量子技术匹配,以及实现超广义充电功率的有趣可能性而具有前景。尽管这种增强的扩展性已在多个设置中出现,但通常认为在通过量子淬火协议充电的乔丹-魏格纳可积分自旋链中是被禁止的。在这里,我们展示了一个扩展的簇伊辛模型,尽管属于上述类别,却在广泛的系统大小范围内表现出超广义充电功率,最多可达千个自旋,在适当的参数范围内。这种显著的异常扩展是由于存储能量的超广义增长,这意味着它仅限于大但有限的系统大小,无法在热力学极限中持续存在。这种现象在有限温度效应下表现稳健。

英文摘要:

Quantum batteries, miniaturized devices able to store and release energy on demand, are promising both because their intrinsic energy and time scales can match those of other quantum technologies and due to the intriguing possibility of achieving super-extensive charging power. While this enhanced scaling is known to appear in several settings, it is generally believed to be forbidden in Jordan-Wigner integrable spin chains charged via quantum-quench protocols. Here, we show that an extended cluster-Ising model, despite belonging to the above category, exhibits super-extensive charging power over wide ranges of system sizes, reaching up to a thousand spins, in proper parameter regimes. This remarkable anomalous scaling is due to a corresponding super-extensive growth of the stored energy, implying that it is limited to a large but finite size of the system and cannot persist in the thermodynamic limit. This phenomenon appears robust against finite-temperature effects.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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