Superconducting nanowire single photon detector and method of obtaining such detector
A single-photon detector and superconducting nanowire technology, applied in nano-optics, photometry, superconducting devices, etc., can solve problems such as poor quality, achieve cheap packaging, simplify packaging, and improve applicability
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[0071] In this section, some working examples of the detector and method of the present invention will be described in detail.
[0072] In particular, the inventors of the present invention have constructed SNSPDs with very thin film thicknesses using the high-Tc cuprate superconductor bismuth strontium calcium copper oxide (BSCCO) to allow reasonable detector performance. BSCCO belongs to a completely novel class of strictly two-dimensional (2D) van der Waals (vdW) materials that have not been seen until recently. Compared with other high-Tc superconductors, BSCCO can be mechanically fabricated with a film thickness of 1.5 nm, which is only equivalent to half a crystallographic unit cell. Furthermore, as a "cousin" of the excellent material graphene, these ultraclean single crystals possess material qualities far superior to strongly disordered superconductor thin films of NbN or WSi used in state-of-the-art SNSPDs. With greater than 10-fold thinned thickness, 2D superconduc...
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