arXiv 2507.005332025-07-01quant-phgr-qcnucl-th

引力光子回波

Gravitational photon echo

Wen-Te Liao, Sven Ahrens

备注：: 5 pages, 4 figures

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AI总结：

本文理论上研究了利用8.4 eV的Thorium-229核钟跃迁在地球上产生、控制和存储引力诱导的光子回波，通过旋转诱导引力频移反转，为地球上可控的引力量子光学奠定基础。

摘要：

本文在理论上研究了在地球上利用8.4 eV的Thorium-229核钟跃迁来产生、控制和存储引力诱导的光子回波。由于Thorium-229钟跃迁具有约1 mHz的极窄线宽以及$10^{19}$量级的高品质因子，因此它允许在毫米尺度的高度变化上潜在地探测引力红移效应。此外，Thorium-229同核异能态1740秒的半衰期使得系统能够在其相干时间内缓慢移动。沿着这一思路，我们探索了在单个目标或多个等间距样本中，由旋转诱导的引力频移反转所引起的光子回波的产生、控制和存储。我们的方法为地球上可控的引力量子光学奠定了基础。

英文摘要：

The generation, controls, and storage of the gravitationally induced photon echo using the 8.4 eV Thorium-229 nuclear clock transition on Earth are theoretically investigated. With its exceptionally narrow linewidth of approximately 1 mHz and high quality factor in the order of $10^{19}$, the Thorium-229 clock transition allows for the potential detection of gravitational-redshift effects at millimeter-scale altitude variations. Moreover, the 1740-second half lifetime of the Thorium-229 isomeric state allows for the slow movement of the system within its coherence time. Along this line, we explore the generation, controls, and storage of photon echo arising from a rotation induced inversion of the gravitational frequency shift in a single target or in multiple equally spaced samples. Our approach lays the foundation for the controllable gravitational quantum optics on Earth.

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