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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Auteurs principaux:	Joseph Vovrosh, Johannes Knolle
Format:	article
Langue:	EN
Publié:	Nature Portfolio 2021
Sujets:	Medicine R Science Q
Accès en ligne:	https://doaj.org/article/4cd603f8fa2e4e1fba62bbc800274609
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spelling	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)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Joseph Vovrosh Johannes Knolle Confinement and entanglement dynamics on a digital quantum computer
description	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
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Confinement and entanglement dynamics on a digital quantum computer

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