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Paper Abstract and Keywords
Presentation 2018-08-09 14:15
Proposal of a single-flux-quantum based event-driven encoder using a row-column readout architecture for a large pixel superconducting nanowire single photon detector array
Shigeyuki Miyajima, Masahiro Yabuno (NICT), Shigehito Miki (NICT/Kobe Univ.), Hirotaka Terai (NICT) SCE2018-14
Abstract (in Japanese) (See Japanese page) 
(in English) We propose a single-flux-quantum (SFQ) based event-driven encoder by using a row-column readout architecture for a large-pixel superconducting nanowire single photon detector (SSPD) array. A row-column readout architecture allows reduction of the number of readout wiring to 2N for N x N-pixel SSPD array, which is effective to realize large-scale SSPD array. We designed an SFQ-based event-driven encoder with the input channel of 32 + 32, which can be applied to 32 x 32-pixel SSPD array. The SFQ encoder circuit outputs a digital code corresponding to the spatial information of the pixel that detected the photon for every photon detection event, indicating that the designed circuit can obtain not only the spatial information but also the timing information of photon detection. We reduced the critical currents of the Josephson junctions (JJs) to half value compared to the standard design. The required total bias currents are 170 mA, while the total number of JJs is 2780. We performed a stand-alone test of the fabricated circuit in liquid helium. We applied an electrical pulse from a pulse pattern generator at room temperature, and observe the output waveforms from the SFQ encoder. As a result, we obtained correct output data from the SFQ encoder for respective input ports. In this article, we report on the detail of the operation of the designed circuit and experimental results in liquid helium.
Keyword (in Japanese) (See Japanese page) 
(in English) uperconducting nanowire single photon detector / single flux quantum circuit / single photon imaging / / / / /  
Reference Info. IEICE Tech. Rep., vol. 118, no. 178, SCE2018-14, pp. 41-46, Aug. 2018.
Paper # SCE2018-14 
Date of Issue 2018-08-02 (SCE) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
Copyright
and
reproduction		 All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF SCE2018-14

Conference Information
Committee SCE  
Conference Date 2018-08-09 - 2018-08-10 
Place (in Japanese) (See Japanese page) 
Place (in English) Toyohashi University of Technology 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Detector, SQUID, etc. 
Paper Information
Registration To SCE 
Conference Code 2018-08-SCE 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Proposal of a single-flux-quantum based event-driven encoder using a row-column readout architecture for a large pixel superconducting nanowire single photon detector array 
Sub Title (in English)  
Keyword(1) uperconducting nanowire single photon detector  
Keyword(2) single flux quantum circuit  
Keyword(3) single photon imaging  
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1st Author's Name Shigeyuki Miyajima  
1st Author's Affiliation National Institute of Information and Communications Technology (NICT)
2nd Author's Name Masahiro Yabuno  
2nd Author's Affiliation National Institute of Information and Communications Technology (NICT)
3rd Author's Name Shigehito Miki  
3rd Author's Affiliation National Institute of Information and Communications Technology/Kobe University (NICT/Kobe Univ.)
4th Author's Name Hirotaka Terai  
4th Author's Affiliation National Institute of Information and Communications Technology (NICT)
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Speaker Author-1 
Date Time 2018-08-09 14:15:00 
Presentation Time 25 minutes 
Registration for SCE 
Paper # SCE2018-14 
Volume (vol) vol.118 
Number (no) no.178 
Page pp.41-46 
#Pages 6 
Date of Issue 2018-08-02 (SCE) 

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