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arXiv quant-ph/0407169quant-ph
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光参量放大器中的鬼干涉

Ghost Interference with Optical Parametric Amplifier

Sulakshana Thanvanthri, Morton H. Rubin

摘要:

分析了纠缠光子源为多模光参量放大器(OPA),其弱极限为双光子自发参量下转换(SPDC)光束时的“鬼”干涉实验。考虑光子计数探测器的有限符合时间窗,计算了双缝斑图的可见度。结果发现,符合窗口和到达探测器的光的带宽对符合探测的可见度损失起着至关重要的作用,不仅在“鬼”干涉实验中,而且在所有涉及符合探测的实验中。文中还讨论了双模和多模OPA光源的可见度损失的差异。PACS:42.65.Yj,42.50.Dv,42.65.Lm

英文摘要:

The 'Ghost' interference experiment is analyzed when the source of entangled photons is a multimode Optical Parametric Amplifier(OPA) whose weak limit is the two-photon Spontaneous Parametric Downconversion(SPDC) beam. The visibility of the double-slit pattern is calculated, taking the finite coincidence time window of the photon counting detectors into account. It is found that the coincidence window and the bandwidth of light reaching the detectors play a crucial role in the loss of visibility on coincidence detection, not only in the 'Ghost' interference experiment but in all experiments involving coincidence detection. The differences between the loss of visibility with two-mode and multimode OPA sources is also discussed. PACS: 42.65.Yj, 42.50.Dv, 42.65.Lm

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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