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arXiv 2403.17201quant-phphysics.optics
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通过光传播涌现多光子量子相干性

Emergence of multiphoton quantum coherence by light propagation

Jannatul Ferdous, Mingyuan Hong, Riley B. Dawkins, Fatemeh Mostafavi, Alina Oktyabrskaya, Chenglong You, Roberto de J. León-Montiel, Omar S. Magaña-Loaiza

AI总结:

研究发现热多光子波包在自由空间线性传播时发生散射,可改变激发模式与量子涨落,形成不同相干光场并产生亚散粒噪声特性,且由非经典 van Cittert-Zernike 定理验证。

摘要:

光子通过与物质相互作用而发生的相干量子性质改变,处于光的量子理论的核心。事实上,原子对光子的吸收和发射可以产生不同类型的光,并具有特征性的量子统计性质。因此,不同类型的光通常与不同的光源相关联。在这里,我们报告在自由空间中观测到多光子系统量子相干性的改变。这一出人意料的效应是由热多光子波包在传播过程中的散射产生的。光子系统激发模式及其相关量子涨落的改变,导致形成具有不同量子相干性质的多种光场。值得注意的是,我们表明这些散射过程可以产生具有亚散粒噪声量子性质的多光子系统。我们的观测通过标志性的 van Cittert-Zernike 定理的非经典表述得到验证。我们相信,通过线性传播产生具有改变后相干性质的量子系统的可能性,可能对多种量子技术产生重大影响。

英文摘要:

The modification of the quantum properties of coherence of photons through their interaction with matter lies at the heart of the quantum theory of light. Indeed, the absorption and emission of photons by atoms can lead to different kinds of light with characteristic quantum statistical properties. As such, different types of light are typically associated with distinct sources. Here, we report on the observation of the modification of quantum coherence of multiphoton systems in free space. This surprising effect is produced by the scattering of thermal multiphoton wavepackets upon propagation. The modification of the excitation mode of a photonic system and its associated quantum fluctuations result in the formation of different light fields with distinct quantum coherence properties. Remarkably, we show that these processes of scattering can lead to multiphoton systems with sub-shot-noise quantum properties. Our observations are validated through the nonclassical formulation of the emblematic van Cittert-Zernike theorem. We believe that the possibility of producing quantum systems with modified properties of coherence, through linear propagation, can have dramatic implications for diverse quantum technologies.

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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