Controlling Energy Storage Crossing Quantum Phase Transitions in an Integrable Spin Quantum Battery

IF 8.1 1区 物理与天体物理 Q1 PHYSICS, MULTIDISCIPLINARY Physical review letters Pub Date : 2024-11-07 DOI:10.1103/physrevlett.133.197001
Riccardo Grazi, Daniel Sacco Shaikh, Maura Sassetti, Niccoló Traverso Ziani, Dario Ferraro
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Abstract

We investigate the performance of a one-dimensional dimerized 𝑋𝑌 chain as a spin quantum battery. Such integrable model shows a rich quantum phase diagram that emerges through a mapping of the spins onto auxiliary fermionic degrees of freedom. We consider a charging protocol relying on the double quench of an internal parameter, namely the strength of the dimerization, and address the energy stored in the systems. We observe three distinct regimes, depending on the timescale characterizing the duration of the charging: a short-time regime related to the dynamics of the single dimers, a long-time regime related to the recurrence time of the system at finite size, and a thermodynamic limit time regime. In the latter, the energy stored is almost unaffected by the charging time and the precise values of the charging parameters, provided the quench crosses a quantum phase transition. Finally, we analytically prove that the three-timescale behavior and the strong dependence of the energy stored on the quantum phase diagram also hold in the quantum Ising chain in a transverse field. Our results can play a relevant role in the design of stable solid-state quantum batteries.
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控制可积分自旋量子电池中的能量存储跨越量子相变
我们研究了一维二聚化𝑋𝑌链作为自旋量子电池的性能。通过将自旋映射到辅助费米子自由度上,这种可积分模型显示出丰富的量子相图。我们考虑了一种依赖于内部参数(即二聚化强度)双重淬火的充电协议,并探讨了系统中存储的能量。根据表征充电持续时间的时间尺度,我们观察到三种截然不同的机制:与单个二聚体动力学相关的短时机制、与有限大小系统的重现时间相关的长时机制,以及热力学极限时间机制。在后者中,只要淬火跨越量子相变,储存的能量几乎不受充电时间和充电参数精确值的影响。最后,我们通过分析证明,在横向场中,量子伊辛链的三时间尺度行为和存储能量对量子相图的强依赖性也是成立的。我们的研究结果可在设计稳定的固态量子电池中发挥重要作用。
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来源期刊
Physical review letters
Physical review letters 物理-物理:综合
CiteScore
16.50
自引率
7.00%
发文量
2673
审稿时长
2.2 months
期刊介绍: Physical review letters(PRL)covers the full range of applied, fundamental, and interdisciplinary physics research topics: General physics, including statistical and quantum mechanics and quantum information Gravitation, astrophysics, and cosmology Elementary particles and fields Nuclear physics Atomic, molecular, and optical physics Nonlinear dynamics, fluid dynamics, and classical optics Plasma and beam physics Condensed matter and materials physics Polymers, soft matter, biological, climate and interdisciplinary physics, including networks
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