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arXiv 0804.4861quant-ph
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用透镜连接光和单原子

Interfacing light and single atoms with a lens

Meng Khoon Tey, Gleb Maslennikov, Timothy C. H. Liew, Syed Abdullah Aljunid, Florian Huber, Brenda Chng, Zilong Chen, Valerio Scarani, Christian Kurtsiefer

摘要:

我们用散射比来描述单个原子或类似的微观系统与光场的相互作用。为此,我们首先推导出强聚焦高斯光束中的电场,然后考虑原子的响应。根据简单散射模型,弱相干探测场的散射光功率分数导致强聚焦区的非物理散射比大于1。一个精致的模型,考虑到激发和散射场之间的干扰到有限尺寸的探测器或光纤,并与实验消光测量不同的聚焦强度。

英文摘要:

We characterize the interaction between a single atom or similar microscopic system and a light field via the scattering ratio. For that, we first derive the electrical field in a strongly focused Gaussian light beam, and then consider the atomic response. Following the simple scattering model, the fraction of scattered optical power for a weak coherent probe field leads to unphysical scattering ratios above 1 in the strong focusing regime. A refined model considering interference between exciting and scattered field into finite-sized detectors or optical fibers is presented, and compared to experimental extinction measurements for various focusing strengths.

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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