Ti/Au Transition-Edge Sensors Coupled to Single Mode Optical Fibers Aligned by Si V-Groove
Ti/Au Transition-Edge Sensors Coupled to Single Mode Optical Fibers Aligned by Si V-Groove
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DOI：
10.1109/tasc.2010.2103352
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发表时间：
2011-06-01
影响因子：
1.8
通讯作者：
Monticone, Eugenio
中科院分区：
文献类型：
--
作者：
Lolli, Lapo;Taralli, Emanuele;Monticone, Eugenio
跃迁边缘传感器（TES）因其光子数分辨能力而成为量子信息、量子计算和计量领域很有前景的微量热计。量子效率（QE）是单光子检测的基础，它应该尽可能高。因此，光源和传感器之间的耦合起着至关重要的作用。在这项工作中，我们展示了通过沉积在氮化硅基板上的两个 Ti/Au TES 获得的单光子检测。这两个传感器与以固定距离预先组装在 Si V 形槽基板上的两根光纤耦合，该基板通过小 90 度角支架直接固定在芯片上。探测器和光纤之间的对准是使用专用系统进行的。展示了使用脉冲激光在 690 nm 和 1310 nm 处的单光子计数数据。
Transition-edge sensors (TESs) are promising micro-calorimeters for applications in the field of quantum information, quantum computation and metrology due to their photon-number resolving capability. Quantum efficiency (QE) is fundamental in single-photon detection and it should be as high as possible. For this reason the coupling between the light source and the sensor plays a crucial role.In this work we present single photon detection obtained by two Ti/Au TESs deposited on the silicon nitride substrate. These two sensors are coupled with two optical fibers pre-assembled at a fixed distance on a Si V-groove substrate which is fixed directly on the chip with a small 90 degree angle bracket. The alignment between the detectors and the fibers is made using a purpose built system. Single-photon counting data at 690 nm and 1310 nm using pulsed lasers are presented.