2020/01/31 by Manoj K. Joshi, Andreas Elben, Benoît Vermersch +5 · 2 citations
Physics and Astronomy · #quant-ph #cond-mat.dis-nn #cond-mat.quant-gas
paper · pdf · doi:10.1103/physrevlett.124.240505
published as Phys. Rev. Lett. 124, 240505 (2020) · 9 pages and 8 figures
arxiv created 2020/08/31 · arxiv updated 2020/09/02
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 Rényi entanglement entropies.