Demonstration of a Thermally Coupled Row-Column SNSPD Imaging Array.,Nano Letters

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Demonstration of a Thermally Coupled Row-Column SNSPD Imaging Array.
Nano Letters ( IF 9.6 ) Pub Date : 2020-02-24 , DOI: 10.1021/acs.nanolett.0c00246
Jason P Allmaras _{1,

2} , Emma E Wollman ₂ , Andrew D Beyer ₂ , Ryan M Briggs ₂ , Boris A Korzh ₂ , Bruce Bumble ₂ , Matthew D Shaw ₂

Affiliation

While single-pixel superconducting nanowire single photon detectors (SNSPDs) have demonstrated remarkable efficiency and timing performance from the UV to near-IR, scaling these devices to large imaging arrays remains challenging. Here, we propose a new SNSPD multiplexing system using thermal coupling and detection correlations between two photosensitive layers of an array. Using this architecture with the channels of one layer oriented in rows and the second layer in columns, we demonstrate imaging capability in 16-pixel arrays with accurate spot tracking at the few-photon level. We also explore the performance trade-offs of orienting the top layer nanowires parallel and perpendicular to the bottom layer. The thermally coupled row-column scheme is readily able to scale to the kilopixel size with existing readout systems and, when combined with other multiplexing architectures, has the potential to enable megapixel scale SNSPD imaging arrays.

中文翻译：

热耦合行列SNSPD成像阵列的演示。

尽管单像素超导纳米线单光子检测器（SNSPD）已显示出从UV到近红外的卓越效率和定时性能，但将这些器件扩展为大型成像阵列仍然具有挑战性。在这里，我们提出了一种新的SNSPD复用系统，该系统使用阵列的两个光敏层之间的热耦合和检测相关性。使用这种结构，其中一层的行面向行，第二层的行面向列，我们展示了16像素阵列的成像能力，并在几光子水平上进行了精确的点跟踪。我们还探索了平行于或垂直于底层定向顶层纳米线的性能折衷方案。通过现有的读出系统，热耦合行-列方案可以轻松缩放到千像素大小，并且

更新日期：2020-02-24

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