https://wiki.gyger.at/ 2026-07-26T04:40:09+00:00 https://wiki.gyger.at/ https://wiki.gyger.at/_media/wiki:dokuwiki.svg text/html 2021-03-26T17:39:12+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.gyger.at/topic:optics:quantumoptics:detection:sspd:designs?rev=1616780352&do=diff Designs of the SNSPD The efficiency of the SNSPD is highly dependent on the design of the structure. text/html 2021-03-26T17:39:12+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.gyger.at/topic:optics:quantumoptics:detection:sspd:materials?rev=1616780352&do=diff Materials of SNSPD Different materials are used for superconducting nanowire single-photon detectors (SNSPD). In our group we use NbTiN but other competitive materials are used. The biggest difference is amorphous (e.g. MoSi) or crystalline materials (e.g. NbN).$92\%$$150 \mathrm{MHz}$$130 \mathrm{Hz}$$14.8 \mathrm{ps}$$75\%$ text/html 2021-03-26T17:39:12+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.gyger.at/topic:optics:quantumoptics:detection:sspd:models?rev=1616780352&do=diff SSPD Models Reviews \cite{Engel.Renema.ea:2015} Review on Detection Mechanisms Theses \cite{Allmaras:2020} PhD Student at Caltech worked on the improvement of the Vodolazov model. The detection event of single photons by SSPDs can be split into four phases, of which the first and the last are very well understood. text/html 2026-02-13T14:33:44+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.gyger.at/topic:optics:quantumoptics:detection:sspd:process?rev=1770993224&do=diff Fabricating SNSPDs Fabrication based on Nb(Ti)N Film deposition Group Year Publication Process Recipe Notes Karl K. Berggren et al. NbN 2009 DC magnetron sputtering Sapphire, 800C, 8 mTorr, with 100 sccm Ar, 5 sccm N2 Parameters varied: deposition time, substrate material and deposition pressure. $R_\mathrm{RT} / R_\mathrm{20K} $$\Delta T_C$$R_\mathrm{20K}$$R_\mathrm{20K}$$T_C$$50\% ~ R_\mathrm{20K}$ text/html 2021-05-10T13:25:07+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.gyger.at/topic:optics:quantumoptics:detection:sspd:properties?rev=1620653107&do=diff Properties of the SNSPD Wavelength Sensitivity max $\lambda_0$ Group (Date) [Citation] Material Comment 9.9um Shaw \cite{Verma.Korzh.ea:2021} WSi Timing Jitter Jitter [ps] Group (Date) [Citation] Material Comment Photon Count Rate (PCR) The photon count rate is a standard measurement for SNSPDs where the bias current is increased and the count rate with constant illumination is recorded. This reveals the $DE$$I_{B0}$$p>1$$$ DE(I_B) = DE_\mathrm{sat} \left( 1 - \frac{1}{1 + \frac{I… text/html 2026-02-13T14:45:31+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.gyger.at/topic:optics:quantumoptics:detection:sspd:theses?rev=1770993931&do=diff Theses A collection of various theses on the topic that I found. This list is by no means complete (that is not possible), but perhaps someone else can find it useful. If you think yours should be linked here, please let me know. PhD Theses Year Author