Confinement and entanglement dynamics on a digital quantum computer
Abstract Confinement describes the phenomenon when the attraction between two particles grows with their distance, most prominently found in quantum chromodynamics (QCD) between quarks. In condensed matter physics, confinement can appear in quantum spin chains, for example, in the one dimensional tr...
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2021
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oai:doaj.org-article:4cd603f8fa2e4e1fba62bbc8002746092021-12-02T18:25:03ZConfinement and entanglement dynamics on a digital quantum computer10.1038/s41598-021-90849-52045-2322https://doaj.org/article/4cd603f8fa2e4e1fba62bbc8002746092021-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-90849-5https://doaj.org/toc/2045-2322Abstract Confinement describes the phenomenon when the attraction between two particles grows with their distance, most prominently found in quantum chromodynamics (QCD) between quarks. In condensed matter physics, confinement can appear in quantum spin chains, for example, in the one dimensional transverse field Ising model (TFIM) with an additional longitudinal field, famously observed in the quantum material cobalt niobate or in optical lattices. Here, we establish that state-of-the-art quantum computers have reached capabilities to simulate confinement physics in spin chains. We report quantitative confinement signatures of the TFIM on an IBM quantum computer observed via two distinct velocities for information propagation from domain walls and their mesonic bound states. We also find the confinement induced slow down of entanglement spreading by implementing randomized measurement protocols for the second order Rényi entanglement entropy. Our results are a crucial step for probing non-perturbative interacting quantum phenomena on digital quantum computers beyond the capabilities of classical hardware.Joseph VovroshJohannes KnolleNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-8 (2021) |
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Medicine R Science Q Joseph Vovrosh Johannes Knolle Confinement and entanglement dynamics on a digital quantum computer |
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Abstract Confinement describes the phenomenon when the attraction between two particles grows with their distance, most prominently found in quantum chromodynamics (QCD) between quarks. In condensed matter physics, confinement can appear in quantum spin chains, for example, in the one dimensional transverse field Ising model (TFIM) with an additional longitudinal field, famously observed in the quantum material cobalt niobate or in optical lattices. Here, we establish that state-of-the-art quantum computers have reached capabilities to simulate confinement physics in spin chains. We report quantitative confinement signatures of the TFIM on an IBM quantum computer observed via two distinct velocities for information propagation from domain walls and their mesonic bound states. We also find the confinement induced slow down of entanglement spreading by implementing randomized measurement protocols for the second order Rényi entanglement entropy. Our results are a crucial step for probing non-perturbative interacting quantum phenomena on digital quantum computers beyond the capabilities of classical hardware. |
format |
article |
author |
Joseph Vovrosh Johannes Knolle |
author_facet |
Joseph Vovrosh Johannes Knolle |
author_sort |
Joseph Vovrosh |
title |
Confinement and entanglement dynamics on a digital quantum computer |
title_short |
Confinement and entanglement dynamics on a digital quantum computer |
title_full |
Confinement and entanglement dynamics on a digital quantum computer |
title_fullStr |
Confinement and entanglement dynamics on a digital quantum computer |
title_full_unstemmed |
Confinement and entanglement dynamics on a digital quantum computer |
title_sort |
confinement and entanglement dynamics on a digital quantum computer |
publisher |
Nature Portfolio |
publishDate |
2021 |
url |
https://doaj.org/article/4cd603f8fa2e4e1fba62bbc800274609 |
work_keys_str_mv |
AT josephvovrosh confinementandentanglementdynamicsonadigitalquantumcomputer AT johannesknolle confinementandentanglementdynamicsonadigitalquantumcomputer |
_version_ |
1718378039367172096 |