Dresden 2020 – scientific programme

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DY: Fachverband Dynamik und Statistische Physik

DY 46: Many-body Quantum Dynamics I

DY 46.3: Talk

Thursday, March 19, 2020, 10:15–10:30, HÜL 186

Confinement Quench Dynamics on a Quantum Computer — •Joseph Vovrosh¹ and Johannes Knolle^1,2,3 — ¹Blackett Laboratory, Imperial College London, London, SW7 2AZ, United Kingdom — ²Department of Physics, Technische Universität München, James-Franck-Straße 1, D-85748 Garching, Germany — ³Munich Center for Quantum Science and Technology (MCQST), 80799 Munich, Germany

Confinement is a phenomenon that occurs when the attraction between two particles grows with their distance, most prominently found in quantum chromodynamics (QCD) between quarks. In condensed matter physics, similar phenomena occur in quantum spin chains, for example, in the one dimensional transverse field Ising model with an additional longitudinal field or as measured in scattering experiments on cobalt niobate. It turns out that confinement effects also lead to clear signatures in the non-equilibrium dynamics after a quantum quench. This makes confinement an ideal quantum effect to test the capabilities of quantum computers. Here, the underlying physics of confinement is explored in relation to quantum simulation on state of the art quantum computers. Quantum confinement is a non-perturbative interaction effect and its quantum simulation opens the possibilities to explore new quantum phenomena beyond the capabilities of classical computers.