We present a scheme based on the use of bright entangled twin beams for the calibration of analog photodiodes, providing an extension of the schemes for calibrating photon-counting detectors with photon pairs. Previous proposals for the calibration of analog photodiodes with entangled beams are based on a stimulated parametric process operating in the low-gain regime. We start by showing that in those proposals it is necessary to know the exact value of the gain as any error in estimating it will lead to an error in the calibration of the quantum efficiency. We then introduce a technique that is independent of the gain, thus eliminating the uncertainty introduced from errors in estimating the gain or experimental fluctuations of parameters that affect the gain. A proof of principle implementation of this technique using bright twin beams obtained from a four-wave mixing process in rubidium vapor shows its viability for the calibration of analog photodiodes.View full textDownload full textKeywordsdetector calibration, metrology, quantum correlations, parametric down conversion, four-wave mixingRelated var addthis_config = { ui_cobrand: "Taylor & Francis Online", services_compact: "citeulike,netvibes,twitter,technorati,delicious,linkedin,facebook,stumbleupon,digg,google,more", pubid: "ra-4dff56cd6bb1830b" }; Add to shortlist Link Permalink http://dx.doi.org/10.1080/09500340.2010.519444
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机译：我们提出了一种基于使用明亮纠缠的双光束进行模拟光电二极管校准的方案，为使用光子对校准光子计数探测器的方案提供了扩展。用于纠缠光束的模拟光电二极管校准的先前提议是基于在低增益状态下运行的受激参量过程。我们首先显示出在那些建议中，有必要知道增益的确切值，因为估计它的任何误差都会导致量子效率校准中的误差。然后，我们引入一种与增益无关的技术，从而消除了在估算增益或影响增益的参数的实验波动时因误差而引入的不确定性。使用从vapor蒸气中四波混合过程获得的明亮双光束对该技术进行原理验证的结果显示了其对模拟光电二极管进行校准的可行性。查看全文下载全文关键词探测器校准，计量，量子相关性，参数下转换，四个-wave blendRelated var addthis_config = {ui_cobrand：“泰勒和弗朗西斯在线”，servicescompact：“ citeulike，netvibes，twitter，technorati，delicious，linkedin，facebook，stumbleupon，digg，google，更多”，发布：“ ra-4dff56cd6bb1830b”} ;添加到候选列表链接永久链接http://dx.doi.org/10.1080/09500340.2010.519444
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