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Paper Abstract and Keywords
Presentation 2023-11-16 16:20
A multi bit PWM-DAC with calibration for quantum computing
Shunsuke Akahosh, Nobukazu Takai (KIT) VLD2023-56 ICD2023-64 DC2023-63 RECONF2023-59
Abstract (in Japanese) (See Japanese page) 
(in English) We propose a structure and control method of a multi-bit PWMDAC for controlling qubits operating in a dilution refrigerator. The DAC drives capacitance and regenerates signals by switching multiple current sources with weighted slew rates. Each current source is compensated for device variations during the calibration process. Programmable control repeatedly selects bits with the smallest error for the regenerated signal based on the characteristics obtained from the calibration process, thus providing a low error conversion for conventional PWM modulation. HSPICE simulations show that the proposed circuit consumes 437.7pW at an operating temperature of 70K, and Python simulations confirm that it is capable of regenerating sine waves up to 8GHz at a sampling frequency of 16GHz.
Keyword (in Japanese) (See Japanese page) 
(in English) Digital-to-analog converter (DAC) / Pulse Wave Modulation (PWM) / Digital Pre-Distortion / Quantum Computing / / / /  
Reference Info. IEICE Tech. Rep., vol. 123, no. 259, ICD2023-64, pp. 136-139, Nov. 2023.
Paper # ICD2023-64 
Date of Issue 2023-11-08 (VLD, ICD, DC, RECONF) 
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)
Download PDF VLD2023-56 ICD2023-64 DC2023-63 RECONF2023-59

Conference Information
Committee VLD DC RECONF ICD IPSJ-SLDM  
Conference Date 2023-11-15 - 2023-11-17 
Place (in Japanese) (See Japanese page) 
Place (in English) Civic Auditorium Sears Home Yume Hall 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Design Gaia 2023 -New Field of VLSI Design- 
Paper Information
Registration To ICD 
Conference Code 2023-11-VLD-DC-RECONF-ICD-SLDM 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A multi bit PWM-DAC with calibration for quantum computing 
Sub Title (in English)  
Keyword(1) Digital-to-analog converter (DAC)  
Keyword(2) Pulse Wave Modulation (PWM)  
Keyword(3) Digital Pre-Distortion  
Keyword(4) Quantum Computing  
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Keyword(6)  
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1st Author's Name Shunsuke Akahosh  
1st Author's Affiliation Kyoto Institute of Technology (KIT)
2nd Author's Name Nobukazu Takai  
2nd Author's Affiliation Kyoto Institute of Technology (KIT)
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Speaker Author-1 
Date Time 2023-11-16 16:20:00 
Presentation Time 25 minutes 
Registration for ICD 
Paper # VLD2023-56, ICD2023-64, DC2023-63, RECONF2023-59 
Volume (vol) vol.123 
Number (no) no.258(VLD), no.259(ICD), no.260(DC), no.261(RECONF) 
Page pp.136-139 
#Pages 4 
Date of Issue 2023-11-08 (VLD, ICD, DC, RECONF) 

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