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Simulating quantum many-body dynamics on a current digital quantum computer
| File | Description | Size | Format | |
|---|---|---|---|---|
 s41534-019-0217-0.pdf | Published version | 1.19 MB | Adobe PDF | View/Open |
| Title: | Simulating quantum many-body dynamics on a current digital quantum computer |
| Authors: | Smith, A Kim, MS Pollmann, F Knolle, J |
| Item 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. |
| Issue Date: | 28-Nov-2019 |
| Date of Acceptance: | 1-Oct-2019 |
| URI: | http://hdl.handle.net/10044/1/75424 |
| DOI: | 10.1038/s41534-019-0217-0 |
| 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/. |
| Sponsor/Funder: | Nano Electronics Lab |
| Funder's Grant Number: | n/a |
| Keywords: | quant-ph quant-ph cond-mat.mes-hall cond-mat.str-el |
| Publication Status: | Published |
| Article Number: | 106 |
| Online Publication Date: | 2019-11-28 |
| Appears in Collections: | Quantum Optics and Laser Science Physics |