Simulating quantum many-body dynamics on a current digital quantum computer
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Published version
Author(s)
Smith, Adam
Kim, MS
Pollmann, Frank
Knolle, Johannes
Type
Journal Article
Abstract
Universal quantum computers are potentially an ideal setting for simulating many-body quantum dynamics that is out of reach for classical digital computers. We use state-of-the-art IBM quantum computers to study paradigmatic examples of condensed matter physics—we simulate the effects of disorder and interactions on quantum particle transport, as well as correlation and entanglement spreading. Our benchmark results show that the quality of the current machines is below what is necessary for quantitatively accurate continuous-time dynamics of observables and reachable system sizes are small comparable to exact diagonalization. Despite this, we are successfully able to demonstrate clear qualitative behaviour associated with localization physics and many-body interaction effects.
Date Issued
2019-11-28
Date Acceptance
2019-10-01
Citation
npj Quantum Information, 2019, 5 (1), pp.1-13
ISSN
2056-6387
Publisher
Nature Research (part of Springer Nature)
Start Page
1
End Page
13
Journal / Book Title
npj Quantum Information
Volume
5
Issue
1
Copyright Statement
© The Author(s) 2019. This article is licensed under a Creative Commons
Attribution 4.0 International License, which permits use, sharing,
adaptation, distribution and reproduction in any medium or format, as long as you give
appropriate credit to the original author(s) and the source, provide a link to the Creative
Commons license, and indicate if changes were made. The images or other third party
material in this article are included in the article’s Creative Commons license, unless
indicated otherwise in a credit line to the material. If material is not included in the
article’s Creative Commons license and your intended use is not permitted by statutory
regulation or exceeds the permitted use, you will need to obtain permission directly
from the copyright holder. To view a copy of this license, visit http://creativecommons.
org/licenses/by/4.0/.
Attribution 4.0 International License, which permits use, sharing,
adaptation, distribution and reproduction in any medium or format, as long as you give
appropriate credit to the original author(s) and the source, provide a link to the Creative
Commons license, and indicate if changes were made. The images or other third party
material in this article are included in the article’s Creative Commons license, unless
indicated otherwise in a credit line to the material. If material is not included in the
article’s Creative Commons license and your intended use is not permitted by statutory
regulation or exceeds the permitted use, you will need to obtain permission directly
from the copyright holder. To view a copy of this license, visit http://creativecommons.
org/licenses/by/4.0/.
Sponsor
Nano Electronics Lab
Identifier
https://www.nature.com/articles/s41534-019-0217-0
Grant Number
n/a
Subjects
quant-ph
quant-ph
cond-mat.mes-hall
cond-mat.str-el
Publication Status
Published
Article Number
106
Date Publish Online
2019-11-28