arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2008.12669quant-ph
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用单个常规探测器观测光子反聚束

Observation of photon antibunching with a single conventional detector

Shaojie Liu, Xing Lin, Feng Liu, Hairui Lei, Wei Fang, Chaoyuan Jin

摘要:

二阶光子关联函数在量子光学中具有重要意义,通常采用Hanbury Brown和Twiss干涉仪测量,该干涉仪采用一对单光子探测器和一个双通道时间采集模块。在这里,我们展示了一种新的方法来测量和提取的二阶关联函数与标准的单光子雪崩光电二极管(死区时间= 22 ns)和单通道时间采集模块。这是通过将零时延附近的信息符合计数移位到不被检测系统的死区时间和后脉冲所消除的时间窗口来实现的。通过测量单个胶体粒子的二阶关联,验证了新方案的正确性。光子反聚束是明确观察到的,并同意使用标准的HBT设置测量的结果。我们的方案简化了高阶相关技术,并可能有利于成本敏感的情况下。

英文摘要:

The second-order photon correlation function is of great importance in quantum optics which is typically measured with the Hanbury Brown and Twiss interferometer which employs a pair of single-photon detectors and a dual-channel time acquisition module. Here we demonstrate a new method to measure and extract the second-order correlation function with a standard single-photon avalanche photodiode (dead-time = 22 ns) and a single-channel time acquisition module. This is realized by shifting the informative coincidence counts near the zero-time delay to a time window which is not obliterated by the dead-time and after-pulse of detection system. The new scheme is verified by measuring the second-order correlation from a single colloidal nanocrystal. Photon antibunching is unambiguously observed and agrees well with the result measured using the standard HBT setup. Our scheme simplifies the higher-order correlation technique and might be favored in cost-sensitive circumstances.

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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