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Author | Korneeva, Y.; Florya, I.; Semenov, A.; Korneev, A.; Goltsman, G. | ||||
Title | New generation of nanowire NbN superconducting single-photon detector for mid-infrared | Type | Journal Article | ||
Year | 2011 | Publication | IEEE Trans. Appl. Supercond. | Abbreviated Journal | IEEE Trans. Appl. Supercond. |
Volume | 21 | Issue | 3 | Pages | 323-326 |
Keywords | SSPD | ||||
Abstract | We present a break-through approach to mid-infrared single-photon detection based on nanowire NbN superconducting single-photon detectors (SSPD). Although SSPD became a mature technology for telecom wavelengths (1.3-1.55 μm) its further expansion to mid-infrared wavelength was hampered by low sensitivity above 2 μm. We managed to overcome this limit by reducing the nanowire width to 50 nm, while retaining high superconducting properties and connecting the wires in parallel to produce a voltage response of sufficient magnitude. The new device exhibits 10 times better quantum efficiency at 3.5 μm wavelength than the “standard” SSPD. | ||||
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Notes | Approved | no | |||
Call Number | RPLAB @ gujma @ | Serial | 644 | ||
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