Mattioli Francesco, Cibella Sara, Gaggero Alessandro, Martini Francesco, Leoni Roberto
Istituto di Fotonica e Nanotecnologie - CNR, Via Cineto Romano 42, I-00156 Roma, Italy.
Nanotechnology. 2020 Dec 10;32(10). doi: 10.1088/1361-6528/abcc97.
NbN-based detectors can detect light from the granular regime (single or few photons) up to weak continuous photon fluxes at wavelengths ranging from visible light up to mid-IR. The article reports our recent results on a novel linear detector, the waveguide-integrated hot electron bolometer (HEB) capable to measure photon fluxes of large coherent beams in a regime in which superconducting nanowire single photon detectors (SNSPDs) are not efficient due to their strong nonlinearity. SNSPDs, photon number resolving detectors and amplitude multiplexing readout schemes, all integrated on photonic circuits are also discussed in the paper. The compatibility of the integrated HEB detectors with the SNSPDs technology can allow the characterization of complex non classical states of light within the same chip.
基于氮化铌的探测器能够检测从颗粒态（单个或少数光子）到可见光至中红外波长范围内的弱连续光子通量的光。本文报道了我们关于一种新型线性探测器——波导集成热电子测辐射热计（HEB）的最新研究成果，该探测器能够在超导纳米线单光子探测器（SNSPD）由于其强非线性而效率不高的情况下，测量大相干光束的光子通量。本文还讨论了全集成在光子电路上的SNSPD、光子数分辨探测器和幅度复用读出方案。集成式HEB探测器与SNSPD技术的兼容性能够在同一芯片内对复杂的非经典光态进行表征。
