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NbN superconducting nanowire single photon detector with efficiency over 90% at 1550 nm wavelength operational at compact cryocooler temperature
- Source :
- SCIENCE CHINA Physics, Mechanics & Astronomy 60(12), 120314(2017)
- Publication Year :
- 2016
-
Abstract
- The fast development of superconducting nanowire single photon detector (SNSPD) in the past decade has enabled many advances in quantum information technology. The best system detection efficiency (SDE) record at 1550 nm wavelength was 93% obtained from SNSPD made of amorphous WSi which usually operated at sub-kelvin temperatures. We first demonstrate SNSPD made of polycrystalline NbN with SDE of 90.2% for 1550 nm wavelength at 2.1K, accessible with a compact cryocooler. The SDE saturated to 92.1% when the temperature was lowered to 1.8K. The results lighten the practical and high performance SNSPD to quantum information and other high-end applications.<br />Comment: 24 pages, 14 figures, 2 tables
- Subjects :
- Condensed Matter - Superconductivity
Physics - Optics
Quantum Physics
Subjects
Details
- Database :
- arXiv
- Journal :
- SCIENCE CHINA Physics, Mechanics & Astronomy 60(12), 120314(2017)
- Publication Type :
- Report
- Accession number :
- edsarx.1609.00429
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1007/s11433-017-9113-4