Quantum information scrambling in a trapped-ion quantum simulator with tunable range interactions
Abstract
In ergodic many-body quantum systems, locally encoded quantum information becomes, in the course of time evolution, inaccessible to local measurements. This concept of "scrambling" is currently of intense research interest, entailing a deep understanding of many-body dynamics such as the processes of chaos and thermalization. Here, we present first experimental demonstrations of quantum information scrambling on a 10-qubit trapped-ion quantum simulator representing a tunable long-range interacting spin system, by estimating out-of-time ordered correlators (OTOCs) through randomized measurements. We also analyze the role of decoherence in our system by comparing our measurements to numerical simulations and by measuring R\'enyi entanglement entropies.
Cite
@article{arxiv.2001.02176,
title = {Quantum information scrambling in a trapped-ion quantum simulator with tunable range interactions},
author = {Manoj K. Joshi and Andreas Elben and Benoît Vermersch and Tiff Brydges and Christine Maier and Peter Zoller and Rainer Blatt and Christian F. Roos},
journal= {arXiv preprint arXiv:2001.02176},
year = {2020}
}
Comments
9 pages and 8 figures