arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1702.07993physics.ins-detcond-mat.mes-hall
收藏

微波动力学电感探测器对近红外光子的计数

Counting Near Infrared Photons with Microwave Kinetic Inductance Detectors

W. Guo, X. Liu, Y. Wang, Q. Wei, L. F. Wei, J. Hubmayr, J. Fowler, J. Ullom, L. Vale, M. R. Vissers, J. Gao

摘要:

我们用超导转变温度Tc ~ 1.4K的TiN/Ti/TiN三层膜制成的微波动力学电感探测器(MKID)实现了1550 nm波长的光子计数。探测器采用集总元件设计,带有一个由铝覆盖的大型叉指电容器(IDC)和电感光子吸收器,其体积范围为0.4 μ m^3至20 μ m^3。我们发现,能量分辨率提高吸收体的体积减少。我们已经实现了0.22 eV的能量分辨率和解决高达7个光子每脉冲,都大大提高了从以前报道的结果在1550 nm波长使用MKID。通过优化光学耦合以最大化进入电感吸收器的光子吸收,进一步的改进是可能的。

英文摘要:

We demonstrate photon counting at 1550 nm wavelength using microwave kinetic inductance detectors (MKIDs) made from TiN/Ti/TiN trilayer films with superconducting transition temperature Tc ~ 1.4 K. The detectors have a lumped-element design with a large interdigitated capacitor (IDC) covered by aluminum and inductive photon absorbers whose volume ranges from 0.4 um^3 to 20 um^3. We find that the energy resolution improves as the absorber volume is reduced. We have achieved an energy resolution of 0.22 eV and resolved up to 7 photons per pulse, both greatly improved from previously reported results at 1550 nm wavelength using MKIDs. Further improvements are possible by optimizing the optical coupling to maximize photon absorption into the inductive absorber.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑