Title: Programmable Quantum Simulators with Atoms and Ions

Peter Zoller

Center for Quantum Physics, University of Innsbruck, and Institute for Quantum Optics and Quantum Information, Austrian Academy of Sciences, Innsbruck, Austria

Abstract: Programmable quantum simulators  have recently emerged as a new paradigm in quantum information processing. In contrast to the universal quantum computer, programmable quantum simulators are non-universal quantum devices with restricted sets of quantum  operations based on analog building blocks, which however can be naturally scaled to a large number of qubits. In this talk we discuss PQS based on trapped-ion platforms in an Innsbruck theory-experiment collaboration. We will focus on two applications: (i) demonstration of variational quantum simulation of lattice models, illustrated here by the Schwinger Model as 1D QED; (ii) implementation of measurement protocols based on statistical correlations between randomized measurements, allowing measurement of Renyi (entanglement) entropies, out-of-time-ordered correlation functions and cross-platform verification of quantum devices.