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arXiv 1802.04640quant-phcond-mat.mes-hall
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耦合非谐振自振子振幅衰减中的量子效应

Quantum effects in amplitude death of coupled anharmonic self-oscillators

Ehud Amitai, Martin Koppenhöfer, Niels Lörch, Christoph Bruder

摘要:

耦合两个或多个自激振荡系统可以稳定它们的零振幅静止状态,从而淬灭它们的振荡。这种现象被称为“振幅死亡”。众所周知,在经典自振荡器中进行了研究,最近才在量子自振荡器中研究了振幅死亡[Ishibashi et al.,E96,052210]。在这里,我们证明了量子自振子的能量谱中的非谐性,可以观察到多重共振的平均声子数之间的经典和量子描述之间的定量差异。这是这些振子的离散能谱的结果,并且在相应的经典模型中不存在。实验可以用当前的技术实现,并且将证明振幅死亡现象中的这些真正的量子效应。

英文摘要:

Coupling two or more self-oscillating systems may stabilize their zero-amplitude rest-state, therefore quenching their oscillation. This phenomenon is termed "amplitude death". Well-known and studied in classical self-oscillators, amplitude death was only recently investigated in quantum self-oscillators [Ishibashi et al., Phys. Rev. E 96, 052210]. Quantitative differences between the classical and quantum descriptions were found. Here, we demonstrate that for quantum self-oscillators with anharmonicity in their energy spectrum, multiple resonances in the mean phonon number can be observed. This is a result of the discrete energy spectrum of these oscillators, and is not present in the corresponding classical model. Experiments can be realized with current technology and would demonstrate these genuine quantum effects in the amplitude death phenomenon.

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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