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Title: Superconducting nanowire single photon detector on diamond

Superconducting nanowire single photon detectors are fabricated directly on diamond substrates and their optical and electrical properties are characterized. Dark count performance and photon count rates are measured at varying temperatures for 1310 nm and 632 nm photons. A multi-step diamond surface polishing procedure is reported, involving iterative reactive ion etching and mechanical polishing to create a suitable diamond surface for the deposition and patterning of thin film superconducting layers. Using this approach, diamond substrates with less than 300 pm Root Mean Square surface roughness are obtained.
Authors:
; ; ;  [1] ; ; ;  [2] ;  [3]
  1. School of Engineering and Applied Sciences, Harvard University, 33 Oxford Street, Cambridge, Massachusetts 02138 (United States)
  2. University of Waterloo, 200 University Ave West, Waterloo, Ontario N2L 3G1 (Canada)
  3. (Canada)
Publication Date:
OSTI Identifier:
22258577
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 104; Journal Issue: 12; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; DIAMONDS; ELECTRICAL PROPERTIES; ETCHING; IONS; MECHANICAL POLISHING; NANOSTRUCTURES; PHOTONS; SUPERCONDUCTING WIRES; SURFACES; THIN FILMS