Improvements of readout signal integrity in mid-infrared superconducting nanowire single-photon detectors-Reference-Cited by-同舟云学术

Improvements of readout signal integrity in mid-infrared superconducting nanowire single-photon detectors

Published:2024-04-15 Issue:16 Volume:124 Page:
ISSN:0003-6951
Container-title:Applied Physics Letters
language:en
Short-container-title:

Author:

Patel Sahil R.¹²^ORCID,Colangelo Marco³⁴^ORCID,Beyer Andrew D.²^ORCID,Taylor Gregor G.²^ORCID,Allmaras Jason P.²^ORCID,Bumble Bruce²,Wollman Emma E.²^ORCID,Shaw Matthew D.²,Berggren Karl K.³^ORCID,Korzh Boris²^ORCID

Affiliation:

1. Department of Applied Physics and Materials Science, California Institute of Technology 1 , 1200 E California Blvd., Pasadena, California 91125, USA

2. Jet Propulsion Laboratory, California Institute of Technology 2 , 4800 Oak Grove Dr, Pasadena, California 91109, USA

3. Research Laboratory of Electronics, Massachusetts Institute of Technology 3 , Cambridge, Massachusetts 02139, USA

4. Electrical and Computer Engineering, Northeastern University 4 , Boston, Massachusetts 02115, USA

Abstract

Superconducting nanowire single-photon detectors (SNSPDs) in the mid-infrared (MIR) have the potential to open up numerous opportunities in fields such as exoplanet searches, direct dark matter detection, physical chemistry, and remote sensing. One challenge in pushing SNSPD sensitivity to the MIR is a decrease in the signal-to-noise ratio (SNR) of the readout signal, as the critical currents become increasingly smaller. We overcome this trade-off with a device architecture that employs impedance matching tapers and superconducting nanowire avalanche photodetectors to demonstrate increased SNR while maintaining saturated internal detection efficiency at 7.4 μm and approaching saturation at 10.6 μm. This work provides a platform for pushing SNSPD sensitivity to longer wavelengths while enabling the scalability to large arrays.

Funder

National Science Foundation Graduate Research Fellowship Program

National Aeronautics and Space Administration

Defense Sciences Office, DARPA

Publisher

AIP Publishing

Link

https://pubs.aip.org/aip/apl/article-pdf/doi/10.1063/5.0202626/19886233/162604_1_5.0202626.pdf

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