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Paper Abstract and Keywords
Presentation 2020-08-24 10:30
Non Local Noise by Applying Localized Noise to Entangled States
Masataka Ohta (titech) PN2020-14
Abstract (in Japanese) (See Japanese page) 
(in English) Quantum error correction proposed by Shor is based on an assumption that noise is localized, that is, state of a qubit is disturbed only by interaction with its local environment. However, for entangled state where the state itself does not have locality, there cannot be any such locality for noise on it. Actually, when a state is entangled, not only state of a qubit but also state of its local environment is involved in entanglement, which means if an entangled state is represented by superposition of a minimum number of unentangled states, noise on each term is different term by term, resulting in non-local noise. Though a complication is that Shor code can allow for up to two different local environment states, which makes it work with trivial examples, in general, quantum error correction is impossible.
Keyword (in Japanese) (See Japanese page) 
(in English) quantum error correction / quantum entanglement / non-locality / / / / /  
Reference Info. IEICE Tech. Rep., vol. 120, no. 137, PN2020-14, pp. 7-9, Aug. 2020.
Paper # PN2020-14 
Date of Issue 2020-08-17 (PN) 
ISSN Online edition: ISSN 2432-6380
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 PN  
Conference Date 2020-08-24 - 2020-08-25 
Place (in Japanese) (See Japanese page) 
Place (in English) Online 
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Topics (in English)  
Paper Information
Registration To PN 
Conference Code 2020-08-PN 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Non Local Noise by Applying Localized Noise to Entangled States 
Sub Title (in English)  
Keyword(1) quantum error correction  
Keyword(2) quantum entanglement  
Keyword(3) non-locality  
1st Author's Name Masataka Ohta  
1st Author's Affiliation Tokyo Institute of Technology (titech)
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Speaker Author-1 
Date Time 2020-08-24 10:30:00 
Presentation Time 25 minutes 
Registration for PN 
Paper # PN2020-14 
Volume (vol) vol.120 
Number (no) no.137 
Page pp.7-9 
Date of Issue 2020-08-17 (PN) 

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