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arXiv 2109.01438quant-ph
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亚稳量子夹带

Metastable quantum entrainment

Albert Cabot, Gian Luca Giorgi, Roberta Zambrini

摘要:

量子vanderPol振荡器是一种具有量子同步现象的耗散驱动系统。当被挤压驱动器强制时,频率调整为强制的一半,显示多个优选相位。在这里,我们分析这种夹带响应的物理起源,建立一个连接与亚稳态开放量子系统。我们报告一个动态政权的特点是一个巨大的分离的时间尺度,其中一个动态模式显示的寿命,可以是数量级大于休息。在这种情况下,长时间的动态被捕获的两个亚稳态,这对应于同步振荡器的优选相位之间的非相干过程。事实上,我们表明,量子夹带在这里的特点是由波动驱动两个亚稳相之间的非相干过程,这最终限制了其时间相干时,移动到量子制度。最后,我们讨论了耗散相变和瞬态同步现象与开放量子系统的联系。

英文摘要:

Quantum van der Pol oscillators are driven-dissipative systems displaying quantum synchronization phenomena. When forced by a squeezed drive, the frequency adjusts to half of the forcing displaying multiple preferred phases. Here we analyze the physical origin of this entrained response, establishing a connection with metastability in open quantum systems. We report a dynamical regime characterized by a huge separation of time scales, in which a dynamical mode displays a lifetime that can be orders of magnitude larger than the rest. In this regime, the long-time dynamics is captured by an incoherent process between two metastable states, which correspond to the preferred phases of the synchronized oscillator. In fact, we show that quantum entrainment is here characterized by fluctuations driving an incoherent process between two metastable phases, which ultimately limits its temporal coherence when moving into the quantum regime. Finally, we discuss connections with the phenomena of dissipative phase transitions and transient synchronization in open quantum systems.

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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