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arXiv 0812.2876quant-ph
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利用量子干涉实现光学相干的直接采样

Direct sampling of optical coherence using quantum interference

Jungsang Kim, David J. Brady

摘要:

我们描述了一种探测器,它直接使用量子干涉测量两个光场的相互相干性,不受单个辐照度的光子噪声的影响。我们的方法利用原子系统中的拉曼跃迁,其中状态演化由与原子相互作用的场的相互相干性驱动。反馈控制用于平衡被表征的场的相互作用,提供相互相干性的测量。我们表明,相干测量的灵敏度可以显着提高,高于传统的干涉方法时,两个领域的相互相干是弱的。

英文摘要:

We describe a detector that measures the mutual coherence of two optical fields directly using quantum interference, free from photon noise of the individual irradiances. Our approach utilizes Raman transition in an atomic system where the state evolution is driven by the mutual coherence of the fields interacting with the atoms. Feedback control is used to balance the interaction of the fields being characterized, providing a measure of the mutual coherence. We show that the sensitivity of the coherence measurement can be enhanced significantly above that of conventional interferometric methods when the mutual coherence of the two fields is weak.

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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