Paper Abstract and Keywords |
Presentation |
2021-07-08 15:35
Quantum noise analysis for quantum conputer-3
-- Application of quantum stochastic differential equation -- Osamu Hirota, Shigeo Tsujii (Chuo Univ.) IT2021-20 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
Recently, the possibility of realizing a large-scale quantum computer, which would be able to attack modern cryptography, has been discussed. However, in our previous paper, we pointed out that in reality, the quantum noise effect in quantum circuits is so large, so the conventional quantum error correction theories and fault-tolerant computation are highly unlikely to work. In particular, it was clearly shown that the threshold theorem underlying the prediction of the development of quantum computers does not hold. As a result, a large-scale quantum computer with error correction capability may not be feasible. If error correction is not possible, an alternative would be to use quantum manipulation to control the source of quantum errors. One example is the application of the quantum Zeno effect. In this paper, we discuss in detail the quantum Zeno effect as a defense mechanism against the collapse of a qubit when the interaction between the qubit and the environment occurs. It will be clarified that the collapse process of the defense mechanism can be analyzed by a quantum stochastic differential equation (stochastic Schrödinger equation). |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
Quantum operation / Lindblad equation / Quantum Zeno effect / / / / / |
Reference Info. |
IEICE Tech. Rep., vol. 121, no. 96, IT2021-20, pp. 28-33, July 2021. |
Paper # |
IT2021-20 |
Date of Issue |
2021-07-01 (IT) |
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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IT2021-20 |
Conference Information |
Committee |
IT |
Conference Date |
2021-07-08 - 2021-07-09 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
Online |
Topics (in Japanese) |
(See Japanese page) |
Topics (in English) |
Freshman session, General |
Paper Information |
Registration To |
IT |
Conference Code |
2021-07-IT |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
Quantum noise analysis for quantum conputer-3 |
Sub Title (in English) |
Application of quantum stochastic differential equation |
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Quantum operation |
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Lindblad equation |
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Quantum Zeno effect |
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1st Author's Name |
Osamu Hirota |
1st Author's Affiliation |
Chuo University (Chuo Univ.) |
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Shigeo Tsujii |
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Chuo University (Chuo Univ.) |
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Speaker |
Author-1 |
Date Time |
2021-07-08 15:35:00 |
Presentation Time |
25 minutes |
Registration for |
IT |
Paper # |
IT2021-20 |
Volume (vol) |
vol.121 |
Number (no) |
no.96 |
Page |
pp.28-33 |
#Pages |
6 |
Date of Issue |
2021-07-01 (IT) |
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