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Paper Abstract and Keywords
Presentation 2021-01-19 15:00
Reducing pump power for broadband impedance-matched Josephson parametric amplifiers
Yoshiro Urade, Kun Zuo (RIKEN), Syotaro Baba, C. W. Sandbo Chang (Univ. Tokyo), Koh-ichi Nittoh (RIKEN), Kunihiro Inomata (AIST), Zhirong Lin (SIMIT), Tsuyoshi Yamamoto (NEC), Yasunobu Nakamura (RIKEN) SCE2020-21
Abstract (in Japanese) (See Japanese page) 
(in English) Josephson parametric amplifiers (JPAs) with quantum-limited low-noise property are crucial devices for fast and high-fidelity readout of superconducting qubits. Further qubit integrations require JPAs with broad amplification bandwidth and low pump power. We report improvement of the pump efficiency of our broadband impedance-matched JPAs. The combination of (i)~improved coupling structure between the pump waveguide and the SQUID of the JPA, and (ii)~implementation of the resonant structure in the pump waveguide, enables pumping of the JPA with efficiency 100 times higher than that of our previous device.
Keyword (in Japanese) (See Japanese page) 
(in English) Josephson parametric amplifier / superconducting qubit / superconducting quantum computer / / / / /  
Reference Info. IEICE Tech. Rep., vol. 120, no. 313, SCE2020-21, pp. 24-29, Jan. 2021.
Paper # SCE2020-21 
Date of Issue 2021-01-12 (SCE) 
ISSN 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)
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Conference Information
Committee SCE  
Conference Date 2021-01-19 - 2021-01-19 
Place (in Japanese) (See Japanese page) 
Place (in English) Online 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To SCE 
Conference Code 2021-01-SCE 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Reducing pump power for broadband impedance-matched Josephson parametric amplifiers 
Sub Title (in English)  
Keyword(1) Josephson parametric amplifier  
Keyword(2) superconducting qubit  
Keyword(3) superconducting quantum computer  
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1st Author's Name Yoshiro Urade  
1st Author's Affiliation RIKEN (RIKEN)
2nd Author's Name Kun Zuo  
2nd Author's Affiliation RIKEN (RIKEN)
3rd Author's Name Syotaro Baba  
3rd Author's Affiliation The University of Tokyo (Univ. Tokyo)
4th Author's Name C. W. Sandbo Chang  
4th Author's Affiliation The University of Tokyo (Univ. Tokyo)
5th Author's Name Koh-ichi Nittoh  
5th Author's Affiliation RIKEN (RIKEN)
6th Author's Name Kunihiro Inomata  
6th Author's Affiliation National Institute of Advanced Industrial Science and Technology (AIST)
7th Author's Name Zhirong Lin  
7th Author's Affiliation Shanghai Institute of Microsystem and Information Technology (SIMIT)
8th Author's Name Tsuyoshi Yamamoto  
8th Author's Affiliation NEC Corporation (NEC)
9th Author's Name Yasunobu Nakamura  
9th Author's Affiliation RIKEN (RIKEN)
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Speaker Author-1 
Date Time 2021-01-19 15:00:00 
Presentation Time 25 minutes 
Registration for SCE 
Paper # SCE2020-21 
Volume (vol) vol.120 
Number (no) no.313 
Page pp.24-29 
#Pages 6 
Date of Issue 2021-01-12 (SCE) 

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