Paper Abstract and Keywords |
Presentation |
2022-08-08 16:10
A cryogenic digital-to-analog converter for high-fidelity control of large-scale qubit arrays Ryozo Takahashi, Takuji Miki, Makoto Nagata (Kobe Univ.) SDM2022-42 ICD2022-10 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
This work presents a cryogenic digital-to-analog converter (DAC) for controlling a qubits in a large-scale quantum computer. The development of a qubit control chip which can be placed on a 4-8 K plate in a dilution refrigerator is one of the most important challenges for realizing large-scale quantum computers. This work proposes a small and low-power DAC for a bias voltage generator, one of the major components of a control chip. The capacitor arrays composing a charge-redistribution DAC are miniaturized by utilizing the cryogenic characteristics of low noise and leakage. Furthermore, capacitor mismatches due to their small size are automatically corrected by a newly proposed calibration technique with a small area-overhead. The prototype DAC was evaluated at 8 K temperature, and it achieved a very small area of 0.008 mm^2 and low power consumption of 5.8 uW, while a non-linearity error within +/-2 LSB. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
cryogenic / digital-to-analog converter / mismatch calibration / quantum computer / / / / |
Reference Info. |
IEICE Tech. Rep., vol. 122, no. 149, ICD2022-10, pp. 37-40, Aug. 2022. |
Paper # |
ICD2022-10 |
Date of Issue |
2022-08-01 (SDM, ICD) |
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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SDM2022-42 ICD2022-10 |
Conference Information |
Committee |
ICD SDM ITE-IST |
Conference Date |
2022-08-08 - 2022-08-10 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
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Topics (in Japanese) |
(See Japanese page) |
Topics (in English) |
Analog, Mixed Analog and Digital, RF, and Sensor Interface, Low Voltage/Low Power Techniques, Novel Devices/Circuits, and the Applications |
Paper Information |
Registration To |
ICD |
Conference Code |
2022-08-ICD-SDM-IST |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
A cryogenic digital-to-analog converter for high-fidelity control of large-scale qubit arrays |
Sub Title (in English) |
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cryogenic |
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digital-to-analog converter |
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mismatch calibration |
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quantum computer |
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1st Author's Name |
Ryozo Takahashi |
1st Author's Affiliation |
Kobe University (Kobe Univ.) |
2nd Author's Name |
Takuji Miki |
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Kobe University (Kobe Univ.) |
3rd Author's Name |
Makoto Nagata |
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Kobe University (Kobe Univ.) |
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Speaker |
Author-1 |
Date Time |
2022-08-08 16:10:00 |
Presentation Time |
25 minutes |
Registration for |
ICD |
Paper # |
SDM2022-42, ICD2022-10 |
Volume (vol) |
vol.122 |
Number (no) |
no.148(SDM), no.149(ICD) |
Page |
pp.37-40 |
#Pages |
4 |
Date of Issue |
2022-08-01 (SDM, ICD) |
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