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arXiv 2601.04466physics.opticsphysics.app-ph
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光子时间错觉

Photonic Temporal Illusion

University of Pennsylvania(宾夕法尼亚大学);University of Vigo(维戈大学);University of Eastern Finland(芬兰东部大学)

Grigorii Ptitcyn, Diego M. Solís, M. S. Mirmoosa, Nader Engheta

AI总结:

本文提出了一种时间错觉的概念,通过在时间和空间上精心编程有效参数的变化,模拟任意时间不变结构的光学行为,并展示了其在控制瞬态响应和合成材料响应方面的应用。

摘要:

具有非寻常光学性质的材料是实现先进光控的核心。然而,在自然界中,这类材料可能极为稀少且难以获得。为克服这一限制,本文引入了时间错觉的概念:一种时间动态框架,其中精心编程的有效参数的时间变化产生类似于任意任意时间不变结构的响应。我们理论证明了常规介电体的介电常数在空间和时间上的适当调制可以重现与奇异材料相关的光学行为。此外,我们揭示,除了稳态效应外,时间错觉还能控制瞬态响应,例如通过有效降低高Q值谐振器的时间常数,从而允许更快的能量积累。此外,通过在调制和激发之间引入偏移,我们展示了该框架解锁了额外的功能。因此,时间错觉范式拓宽了时空变化系统的能力,为按需合成材料响应提供了强大途径,并为光学和波物理的新理论和实验方向铺平了道路。

英文摘要:

Materials with unusual optical properties are central to advanced control of light. Yet, in nature, such materials may be exceedingly rare and often difficult to obtain. To overcome this limitation, here we introduce the concept of temporal illusion: A temporally dynamic framework in which carefully programmed temporal variations in effective parameters generate responses akin to those of, in principle, any arbitrary time-invariant structure. We theoretically demonstrate that proper modulation of the permittivity of a conventional dielectric in space and time replicates the optical behavior associated with exotic materials. Besides, we reveal that, beyond steady-state effects, temporal illusion also enables control over transient responses, for instance, by effectively lowering the time constant of high-quality-factor resonators, therefore, allowing faster energy accumulation. Moreover, by incorporating detuning between modulation and excitation, we show that the framework unlocks additional functionalities. The temporal illusion paradigm thus broadens the capabilities of space-time varying systems, offering a powerful route to synthesize material responses on demand and paving the way for new theoretical and experimental directions in optics and wave physics.

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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