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Simulating quantum many-body dynamics on a current digital quantum computer

delete2019-11-28
delete235
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OA
AI
A
Adam Smith *
K
Kim, M. S.
F
Frank Pollmann
K
Knolle, Johannes
DOI:10.1038/s41534-019-0217-0delete
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Abstract

Abstract

En 中文
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.
Keywords:
LATTICE GAUGE-THEORIES
LOCALIZATION
PHYSICS
ATOMS
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Journal

npj Quantum Information cover
npj Quantum Information
IF:
8.3
Papers:
1.4K
Citations:
8.1K

Organization

T
Technical University of Munich
Scholars:
5.2W
Papers: 3.9W
Citations: 6.2W
I
Imperial College London
Scholars:
8.3W
Papers: 7.3W
Citations: 11.1W