Nanoantenna enhancement for telecom-wavelength superconducting single photon detectors.
Nanoantenna enhancement for telecom-wavelength superconducting single photon detectors.
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DOI：
10.1021/nl503055a
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发表时间：
2015-01
期刊：
影响因子：
10.8
通讯作者：
R. Heath;M. G. Tanner;T. Drysdale;S. Miki;V. Giannini;S. Maier;R. Hadfield
中科院分区：
文献类型：
--
作者：
R. Heath;M. G. Tanner;T. Drysdale;S. Miki;V. Giannini;S. Maier;R. Hadfield
超导纳米线单光子探测器作为一种关键的红外光子计数技术正在迅速崛起。两个正面耦合的银偶极子纳米天线，模拟在1480和1525 nm的谐振，在两个步骤的过程中制造。当照射天线时，观察到系统检测效率提高了50%至130%。这为增加超导纳米线的吸收提供了一条途径，创造了更大的有源区，并在更长的波长下实现了更有效的检测。
Superconducting nanowire single photon detectors are rapidly emerging as a key infrared photon-counting technology. Two front-side-coupled silver dipole nanoantennas, simulated to have resonances at 1480 and 1525 nm, were fabricated in a two-step process. An enhancement of 50 to 130% in the system detection efficiency was observed when illuminating the antennas. This offers a pathway to increasing absorption into superconducting nanowires, creating larger active areas, and achieving more efficient detection at longer wavelengths.