Miki, S.
, Fujiwara, M.
, Sasaki, M.
, Baek, B.
, Miller, A.
, Hadfield, R.
, Nam, S.
and Wang, Z.
(2008),
Large sensitive-area NbN nanowire superconducting single-photon detectors fabricated on single-crystal MgO substrates, Applied Physics Letters, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=902205
(Accessed April 26, 2024)
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Large sensitive-area NbN nanowire superconducting single-photon detectors fabricated on single-crystal MgO substrates
Published
Author(s)
Shigehito Miki, Mikio Fujiwara, Masahide Sasaki, , Aaron Miller, Robert Hadfield, , Zhen Wang
Abstract
We report on the performance of large area NbN nanowire superconducting single-photon detectors (SSPDs). 20 x 20 υm2 area SSPDs with 80 and 100 nm linewidths and 50% fill factor were fabricated in 4-nm-thick NbN films grown on single-crystal MgO substrates. The high quality of the devices was verified by electrical and optical testing and compares favorably to measurements of 10 x 10 υm2 area SSPDs. Meaurements of kinetic inductance versus bias current indicate that the constrictin density id low. The fiber-coupled detection efficiency of the devices was 0.4%-3.5% at 100 Hz dark count rate.Citation
Applied Physics Letters
Volume
92
Pub Type
Journals
Download Paper
Keywords
Niobium nitride (NbN), superconducting single-photon detectors (SSPDs), quantum processing
Citation
Created February 14, 2008, Updated October 12, 2021