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Atomic and Laser Physics
Credit: Jack Hobhouse

Prof Dieter Jaksch

Professor of Physics

Sub department

  • Atomic and Laser Physics

Research groups

  • Quantum systems engineering
Dieter.Jaksch@physics.ox.ac.uk
  • About
  • Publications

Solving lattice gauge theories using the quantum Krylov algorithm and qubitization

Quantum Verein zur Forderung des Open Access Publizierens in den Quantenwissenschaften 9 (2025) 1669

Authors:

Lewis W Anderson, Martin Kiffner, Tom O'Leary, Jason Crain, Dieter Jaksch
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Tensor networks enable the calculation of turbulence probability distributions.

Science advances 11:5 (2025) eads5990

Authors:

Nikita Gourianov, Peyman Givi, Dieter Jaksch, Stephen B Pope

Abstract:

Predicting the dynamics of turbulent fluids has been an elusive goal for centuries. Even with modern computers, anything beyond the simplest turbulent flows is too chaotic and multiscaled to be directly simulatable. An alternative is to treat turbulence probabilistically, viewing flow properties as random variables distributed according to joint probability density functions (PDFs). Such PDFs are neither chaotic nor multiscale, yet remain challenging to simulate due to their high dimensionality. Here, we overcome the dimensionality problem by encoding turbulence PDFs as highly compressed "tensor networks" (TNs). This enables single CPU core simulations that would otherwise be impractical even with supercomputers: for a 5 + 1 dimensional PDF of a chemically reactive turbulent flow, we achieve reductions in memory and computational costs by factors of [Formula: see text] and [Formula: see text], respectively, compared to standard finite-difference algorithms. A future path is opened toward something heretofore thought infeasible: directly simulating high-dimensional PDFs of both turbulent flows and other chaotic systems that can usefully be described probabilistically.
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Floquet Schrieffer-Wolff transform based on Sylvester equations

Physical Review B American Physical Society (APS) 110:24 (2024) 245108

Authors:

Xiao Wang, Fabio Pablo Miguel Méndez-Córdoba, Dieter Jaksch, Frank Schlawin
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Boundary treatment for variational quantum simulations of partial differential equations on quantum computers

Computers & Fluids Elsevier (2024) 106508

Authors:

Paul Over, Sergio Bengoechea, Thomas Rung, Francesco Clerici, Leonardo Scandurra, Eugene de Villiers, Dieter Jaksch
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Excitonic enhancement of cavity-mediated interactions in a two-band Hubbard model

Physical Review B American Physical Society (APS) 109:11 (2024) 115137

Authors:

Xiao Wang, Dieter Jaksch, Frank Schlawin
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