Single-photon detection using magnesium diboride superconducting nanowires
Single-photon detection using magnesium diboride superconducting nanowires
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DOI：
10.1063/1.3518723
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发表时间：
2010-11-22
影响因子：
4
通讯作者：
Tokura, Y.
中科院分区：
文献类型：
--
作者：
Shibata, H.;Takesue, H.;Tokura, Y.
我们利用提升工艺制备了10 nm厚的MgB2纳米线，宽度降至100 nm。纳米线的I-V特性在I-c处表现出迟滞和急剧的电压跳变。尽管150纳米宽的纳米线显示出在405纳米波长检测单个光子的能力，但纳米线太宽而无法检测1560纳米波长的单个光子。100 nm宽的纳米线显示出在405-1560 nm波长范围内检测单个光子的能力。这表明了MgB2作为高性能超导纳米线单光子探测器的可能应用。(C) 2010年美国物理研究所。(doi: 10.1063/1.3518723)
We fabricated 10 nm thick MgB2 nanowires with a width down to 100 nm using the liftoff process. The I-V characteristics of the nanowire show hysteresis and a sharp voltage jump at I-c. Though a 150 nm wide nanowire exhibits the capacity for detecting a single photon at 405 nm wavelength, the nanowire is too wide to detect a single photon at 1560 nm. A 100 nm wide nanowire exhibits the capacity for detecting single photons in the 405-1560 nm wavelength range. This indicates a possible application of MgB2 as a high-performance superconducting nanowire single-photon detector. (C) 2010 American Institute of Physics. [doi:10.1063/1.3518723]