摘要
报道了Al/Ti双层薄膜超导TES的光子数分辨特性。通过设计双层薄膜的尺寸,使其满足光子数分辨所需的热导、热容需要,制备出了完好的TES。在320m K的低温下,通过测试其对1550nm光脉冲的响应,发现等效光子数分辨率可达到40个左右。这是使用超导TES实现单光子探测及进一步实现量子通讯的重要基础。
This paper reported the photon number resolution of the Al/Ti bilayer superconducting TES. By designing the size of the bilayer films, we could make thermal conductivity and heat capacity to meet the requirement of the photon number resolution. The authors fabricated intact TES. At the low temperature of 320inK, by testing the response to 1550nm pulse, we found that the equivalent photon number resolution could reach 40 or so. This is the important basis of realizing single photon detection and quantum communication by superconducting TES.
出处
《低温与超导》
CAS
北大核心
2014年第11期44-47,共4页
Cryogenics and Superconductivity
基金
国家重点基础研究发展计划(2011CBA00304)
国家自然科学基金(60836001
61174084
61106121
U1330201)
清华大学自主科研计划(20131089314)资助
