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arXiv 2302.10652quant-ph
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揭示窄带孪生光束产生的预告光子之间的 Hong-Ou-Mandel 干涉

Unfolding the Hong-Ou-Mandel interference between heralded photons from narrowband twin beams

K. Laiho, T. Dirmeier, G. Shafiee, Ch. Marquardt

AI总结:

该研究推导了两个独立窄带参量下转换源的预告光子间Hong-Ou-Mandel干涉的时间特性,考虑多光子成分、分束器不平衡和损耗,经电信波长仿真提供参数优化工具,助力量子光学应用。

摘要:

Hong-Ou-Mandel(HOM,洪-欧-曼德尔)干涉是最引人关注的量子光学现象之一,在执行量子光通信和计算任务中至关重要。近年来,诸如依赖参量下转换(PDC)过程的孪生光束发射器,已成为可靠的预告单光子源。然而,若泵浦功率足够高,通过PDC产生的光子对(通常称为信号光和闲频光)会包含多光子成分,这通常会扭曲所研究的量子特性。本文推导了两个独立窄带PDC源产生的预告态之间HOM干涉的时间特性。除了PDC的多光子成分外,我们的分析还考虑了分束器比例不平衡以及光学损耗带来的影响。我们在电信波长范围内进行了仿真,并提供了一种用于寻找PDC过程参数最优选择的实用工具。我们的结果揭示了窄带PDC源的特性,在利用这类源驱动量子光学应用时具有实用价值。

英文摘要:

The Hong-Ou-Mandel (HOM) interference is one of the most intriguing quantum optical phenomena and crucial in performing quantum optical communication and computation tasks. Lately, twin beam emitters such as those relying on the process of parametric down-conversion (PDC) have become confident sources of heralded single photons. However, if the pump power is high enough, the pairs produced via PDC -- often called signal and idler -- incorporate multiphoton contributions that usually distort the investigated quantum features. Here, we derive the temporal characteristics of the HOM interference between heralded states from two independent narrowband PDC sources. Apart from the PDC multiphoton content, our treatment also takes into account effects arriving from an unbalanced beam splitter ratio and optical losses. We perform a simulation in the telecommunication wavelength range and provide a useful tool for finding the optimal choice for PDC process parameters. Our results offer insight in the properties of narrowband PDC sources and turn useful when driving quantum optical applications with them.

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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