Superconducting transition-edge sensors (TESs) have demonstrated high detection efficiency and photon-number-resolving capability, making TESs attractive in quantum information and astrophysics. Aiming to achieve high energy detection efficiency (i.e., the ratio of the detected energy to incident energy), we integrate the TES in an optical cavity, consisting of 16-layer dielectric reflection mirror and 4-layer antireflection coating. The critical temperature was decreased to 260 mK after deposition of antireflection coating from its original 323 mK. The energy detection efficiency was increased by a factor of two, up to 40%, thanks to the enhancement of photon absorption by adding the optical cavity.

中文翻译：

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提高带光腔的钛基超导过渡边缘传感器的能量检测效率

超导过渡边缘传感器 (TES) 已表现出高检测效率和光子数分辨能力，使 TES 在量子信息和天体物理学中具有吸引力。为了实现高能量探测效率（即探测能量与入射能量的比值），我们将TES集成在一个由16层介质反射镜和4层抗反射涂层组成的光学腔中。在沉积抗反射涂层后，临界温度从原来的 323 mK 降至 260 mK。由于通过添加光学腔增强了光子吸收，能量检测效率提高了两倍，最高可达 40%。