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Dresden 2020 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 11: Focus Session: Simulating Quantum Many-Body Systems on Noisy Intermediate-Scale Quantum Computers (joint session TT/DY)

TT 11.5: Hauptvortrag

Montag, 16. März 2020, 17:15–17:45, HSZ 03

Randomized measurements: A toolbox for probing quantum simulators and quantum computers — •Benoit Vermersch1,2,8, Andreas Elben1,2, Jinlong Yu1,2, Lukas Sieberer1,2, Guanyu Zhu3, Marcello Dalmonte4, Frank Pollmann5, Mohammad Hafezi3, Norman Yao6, Ignacio Cirac7, Peter Zoller1,2, Tiff Brydges1,2, Manoj Joshi1,2, Christine Maier1,2, Petar Jurcevic1,2, Ben Lanyon1,2, Christian Roos1,2, and Rainer Blatt1,21Center for Quantum Physics and Institute for Experimental Physics, University of Innsbruck, Austria — 2Institute for Quantum Optics and Quantum Information of the Austrian Academy of Sciences, Innsbruck, Austria — 3JQI - University of Maryland, USA — 4ICTP, Trieste, Italy — 5TU Munich, Garching, Germany — 6LBL - University of California, Berkley, USA — 7Max-Planck-Institut fur Quantenoptik, Garching, Germany — 8LPMMC CNRS/Universite Grenoble Alpes, Grenoble, France

Randomized measurements have emerged as a new tool to probe the properties of quantum simulators and quantum computers beyond standard observables. In the talk I will present our recent results including randomized measurement protocols to measure entanglement [1], out-of-time-ordered correlations [2], and many-body topological invariants [3]. I will also show some experimental results [4,5] obtained in collaboration with the group of Rainer Blatt (IQOQI Innsbruck).

[1] Phys. Rev. Lett. 120 (2018) 050406

[2] Phys. Rev. X 9 (2019) 021061

[3] arXiv:1906.05011

[4] Science 364.6437 (2019), pp. 260-263

[5] M. Joshi et al., in preparation

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