activity
20182020
collaborators

5 papers

quant-ph2020

Quantum information scrambling in a trapped-ion quantum simulator with tunable range interactions

Manoj K. Joshi, Andreas Elben, Benoît Vermersch +5

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"…

quant-ph2019

Cross-Platform Verification of Intermediate Scale Quantum Devices

Andreas Elben, Benoît Vermersch, Rick van Bijnen +7

We describe a protocol for cross-platform verification of quantum simulators and quantum computers. We show how to measure directly the overlap an…

quant-ph2019

Many-body topological invariants from randomized measurements

Andreas Elben, Jinlong Yu, Guanyu Zhu +4

The classification of symmetry-protected topological (SPT) phases in one dimension has been recently achieved, and had a fundamental impact in our understanding of quantum phases i…

quant-ph2018

Digital Quantum Simulation, Trotter Errors, and Quantum Chaos of the Kicked Top

Lukas M. Sieberer, Tobias Olsacher, Andreas Elben +4

This work aims at giving Trotter errors in digital quantum simulation (DQS) of collective spin systems an interpretation in terms of quantum chaos of the kicked top. In particular,…

quant-ph2018

Statistical correlations between locally randomized measurements: a toolbox for probing entanglement in many-body quantum states

Andreas Elben, Benoît Vermersch, Christian F. Roos +1

We develop a general theoretical framework for measurement protocols employing statistical correlations of randomized measurements. We focus on locally randomized measurements impl…