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Title: Experimental investigation of the detection mechanism in WSi nanowire superconducting single photon detectors

Abstract

We use quantum detector tomography to investigate the detection mechanism in WSi nanowire superconducting single photon detectors. To this purpose, we fabricated a 250 nm wide and 250 nm long WSi nanowire and measured its response to impinging photons with wavelengths ranging from λ = 900 nm to λ = 1650 nm. Tomographic measurements show that the detector response depends on the total excitation energy only. Moreover, for total absorbed energies >0.8 eV the current–energy relation is linear, similar to what was observed in NbN nanowires, whereas the current–energy relation deviates from linear behavior for total energies below 0.8 eV.

Authors:
; ;  [1]; ; ;  [2]; ; ; ; ; ;  [3]
  1. COBRA Research Institute, Eindhoven University of Technology, P.O. Box 513, 5600MB Eindhoven (Netherlands)
  2. Huygens-Kamerlingh Onnes Laboratory, Leiden University, Niels Bohrweg 2, 2333CA Leiden (Netherlands)
  3. National Institute of Standards and Technology, 325 Broadway, Boulder, Colorado 80305 (United States)
Publication Date:
OSTI Identifier:
22594460
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 109; Journal Issue: 3; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; DETECTION; EXCITATION; NANOWIRES; NIOBIUM NITRIDES; PHOTONS; SUPERCONDUCTING DEVICES; TOMOGRAPHY; WAVELENGTHS

Citation Formats

Gaudio, Rosalinda, E-mail: r.gaudio@tue.nl, Zhou, Zili, Fiore, Andrea, Renema, Jelmer J., Exter, Martin P. van, Dood, Michiel J. A. de, Verma, Varun B., Lita, Adriana E., Shainline, Jeffrey, Stevens, Martin J., Mirin, Richard P., and Nam, Sae Woo. Experimental investigation of the detection mechanism in WSi nanowire superconducting single photon detectors. United States: N. p., 2016. Web. doi:10.1063/1.4958687.
Gaudio, Rosalinda, E-mail: r.gaudio@tue.nl, Zhou, Zili, Fiore, Andrea, Renema, Jelmer J., Exter, Martin P. van, Dood, Michiel J. A. de, Verma, Varun B., Lita, Adriana E., Shainline, Jeffrey, Stevens, Martin J., Mirin, Richard P., & Nam, Sae Woo. Experimental investigation of the detection mechanism in WSi nanowire superconducting single photon detectors. United States. doi:10.1063/1.4958687.
Gaudio, Rosalinda, E-mail: r.gaudio@tue.nl, Zhou, Zili, Fiore, Andrea, Renema, Jelmer J., Exter, Martin P. van, Dood, Michiel J. A. de, Verma, Varun B., Lita, Adriana E., Shainline, Jeffrey, Stevens, Martin J., Mirin, Richard P., and Nam, Sae Woo. 2016. "Experimental investigation of the detection mechanism in WSi nanowire superconducting single photon detectors". United States. doi:10.1063/1.4958687.
@article{osti_22594460,
title = {Experimental investigation of the detection mechanism in WSi nanowire superconducting single photon detectors},
author = {Gaudio, Rosalinda, E-mail: r.gaudio@tue.nl and Zhou, Zili and Fiore, Andrea and Renema, Jelmer J. and Exter, Martin P. van and Dood, Michiel J. A. de and Verma, Varun B. and Lita, Adriana E. and Shainline, Jeffrey and Stevens, Martin J. and Mirin, Richard P. and Nam, Sae Woo},
abstractNote = {We use quantum detector tomography to investigate the detection mechanism in WSi nanowire superconducting single photon detectors. To this purpose, we fabricated a 250 nm wide and 250 nm long WSi nanowire and measured its response to impinging photons with wavelengths ranging from λ = 900 nm to λ = 1650 nm. Tomographic measurements show that the detector response depends on the total excitation energy only. Moreover, for total absorbed energies >0.8 eV the current–energy relation is linear, similar to what was observed in NbN nanowires, whereas the current–energy relation deviates from linear behavior for total energies below 0.8 eV.},
doi = {10.1063/1.4958687},
journal = {Applied Physics Letters},
number = 3,
volume = 109,
place = {United States},
year = 2016,
month = 7
}
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