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arXiv 2501.01385quant-ph
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真空诱导的原子光栅

Vacuum-induced atomic grating

Muhammad Shuraim, Muhammad Waseem, Shahid Qamar, Muhammad Irfan

AI总结:

本文研究真空电磁场诱导的原子光栅,利用冷原子与光学腔强耦合,发现探测场可在真空或少量光子下产生衍射,且一级衍射峰随光子数增加由共振峰变为凹陷,可用于区分腔的量子态。

摘要:

由电磁场真空所诱导的原子-场相互作用展现出多种基本现象与效应。本文研究了由辐射场真空态所导致的电磁诱导原子光栅。利用与光学腔强耦合的冷原子系综,我们证明,穿过原子介质的探测场在仅有少量光子、甚至仅由腔模的电磁真空场驱动时,会衍射到零级和一级衍射峰。随着腔内光子数增加,一级衍射峰的强度先上升,随后呈现下降趋势。此外,我们观察到,在真空态和单光子腔态下,一级峰强度在共振处达到最大值。然而,随着光子数进一步增加,共振处的峰转变为凹陷,并在非共振位置伴随出现两个边峰。这种从峰到凹陷的转变可能被用于区分腔的量子态。

英文摘要:

Atom-field interactions, induced by the vacuum of the electromagnetic field, exhibit a variety of fundamental phenomena and effects. In this paper, we study the electromagnetically induced atomic grating due to the vacuum state of the radiation field. Using an ensemble of cold atoms, strongly coupled to an optical cavity, we show that a probe field, propagating through the atomic medium, diffracts to zeroth and first-order diffraction peaks with few photons and even by the electromagnetic vacuum field of the cavity mode. As the number of photons in the cavity increases, the intensity of the first-order diffraction peak initially rises and then exhibits a decreasing trend. Furthermore, we observe that the first-order peak intensity reaches its maximum at resonance for both the vacuum and single-photon cavity state. However, as the number of photons increases further, this peak at resonance transforms into a dip, accompanied by two side peaks at off-resonance positions. This transition from a peak to a dip may potentially be used to distinguish the quantum state of the cavity.

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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