基于纳米级超导跃迁边缘传感器的GHz计数率近红外单光子探测器
Proposal for a GHz count rate near-IR single-photon detector based on a nanoscale superconducting transition edge sensor
摘要：
我们描述了一种基于纳米级铌探测器元件的超导跃迁边缘传感器。该装置被预测为能够与GHz的计数率的能量分辨近红外单光子探测。与传统的过渡边缘传感器相比，该器件的速度和灵敏度的提高是由于纳米级检测器元件的电子热容非常小。在目前的工作中，我们计算预测的热响应时间和能量分辨率。我们还讨论了使用谐振近红外天线实现有效的光耦合到亚波长检测器元件的方法。
英文摘要：
We describe a superconducting transition edge sensor based on a nanoscale niobium detector element. This device is predicted to be capable of energy-resolved near-IR single-photon detection with a GHz count rate. The increased speed and sensitivity of this device compared to traditional transition edge sensors result from the very small electronic heat capacity of the nanoscale detector element. In the present work, we calculate the predicted thermal response time and energy resolution. We also discuss approaches for achieving efficient optical coupling to the sub-wavelength detector element using a resonant near-IR antenna.
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