Extending single-photon optimized superconducting transition edge sensors beyond the single-photon counting regime
Extending single-photon optimized superconducting transition edge sensors beyond the single-photon counting regime
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DOI：
10.1364/oe.20.023798
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发表时间：
2012-10-08
期刊：
影响因子：
3.8
通讯作者：
Nam, Sae Woo
中科院分区：
文献类型：
--
作者：
Gerrits, Thomas;Calkins, Brice;Nam, Sae Woo
通常，过渡边缘传感器分辨高达10或20个光子的光子数，这取决于波长和TES设计。我们将动态范围扩展到1000个光子，同时保持子散粒噪声检测过程中检测到的光子数量的不确定性，并且超出此范围时，显示出高达约6的单调响应。10（6）光子在一个光脉冲。这种操作模式，加热传感器远远超出其过渡边缘到正常的导电制度，提供了一种技术，用于连接单光子计数测量辐射功率测量在皮瓦级。将这两种通常不兼容的操作机制连接在单个探测器中，为将光子计数测量直接与常规低温辐射测量标准联系起来提供了巨大的潜力。此外，我们的测量突出了光子数态源作为表征这种探测器的工具的优势。
Typically, transition edge sensors resolve photon number of up to 10 or 20 photons, depending on the wavelength and TES design. We extend that dynamic range up to 1000 photons, while maintaining sub-shot noise detection process uncertainty of the number of detected photons and beyond that show a monotonic response up to approximate to 6 . 10(6) photons in a single light pulse. This mode of operation, which heats the sensor far beyond its transition edge into the normal conductive regime, offers a technique for connecting single-photon-counting measurements to radiant-power measurements at picowatt levels. Connecting these two usually incompatible operating regimes in a single detector offers significant potential for directly tying photon counting measurements to conventional cryogenic radiometric standards. In addition, our measurements highlight the advantages of a photon-number state source over a coherent pulse source as a tool for characterizing such a detector.