Floquet Hamiltonian Engineering of an Isolated Many-Body Spin System

ORAL

Abstract

Controlling interactions is the key element for quantum engineering of many-body systems. Using time-periodic driving, a naturally given many-body Hamiltonian of a closed quantum system can be transformed into an effective target Hamiltonian thus exhibiting vastly different dynamics. We demonstrate such Floquet engineering with a system of spins represented by Rydberg states in an ultracold atomic gas. Applying a sequence of spin manipulations, the anisotropy of the effective Heisenberg XXZ Hamiltonian can be continuously tuned resulting in a change of symmetry. As a consequence, we observe a drastic change of the relaxation behavior of the total spin which is qualitatively captured by a semi-classical simulation. Synthesising a wide range of Hamiltonians in a single experimental setting opens new opportunities for quantum simulation of non-equilibrium dynamics.

*The authors gratefully acknowledge insightful discussions with M. Gärttner, S. Whitlock, P. Cappellaro and K. X. Wei. This work has been supported by the Heidelberg Center for Quantum Dynamics and is part of the DFG Collaborative Research Centre SFB 1225 (ISOQUANT), the DFG Priority Program 1929 "GiRyd" (DFG WE2661/12-1), the DFG under Germany's Excellence Strategy EXC 2181/1 - 390900948 (the Heidelberg STRUCTURES Excellence Cluster) and the European Commission FET flagship project PASQuanS (Grant No. 817482). N.T. acknowledges funding from the European Union's Horizon 2020 program under Marie Sklodowska-Curie grant agreement no. 798402. C.H. acknowledges support from the Alexander von Humboldt foundation. T.F. acknowledges funding by a graduate scholarship of the Heidelberg University (LGFG).

–

Presenters

  • Sebastian Geier

    • Physikalisches Institut, Universität Heidelberg, Im Neuenheimer Feld 226, 69120 Heidelberg, Germany
    • Physikaliches Institut, Heidelberg University
    • Physikalisches Institut, Universität Heidelberg
    • Physikalisches Institut, Heidelberg University, Germany

Authors

  • Sebastian Geier

    • Physikalisches Institut, Universität Heidelberg, Im Neuenheimer Feld 226, 69120 Heidelberg, Germany
    • Physikaliches Institut, Heidelberg University
    • Physikalisches Institut, Universität Heidelberg
    • Physikalisches Institut, Heidelberg University, Germany

  • Nithiwadee Thaicharoen

    • Physikalisches Institut, Universität Heidelberg, Im Neuenheimer Feld 226, 69120 Heidelberg, Germany ; Research Unit for Quantum Technology, Faculty of Science, Chiang Mai Uni
    • Chiang Mai Univ

  • Clement Hainaut

    • Physikalisches Institut, Universität Heidelberg, Im Neuenheimer Feld 226, 69120 Heidelberg, Germany
    • Physikalisches Institut, Heidelberg University
    • Physikalisches Institut, Heidelberg University, Germany

  • Titus Franz

    • Physikalisches Institut, Universität Heidelberg, Im Neuenheimer Feld 226, 69120 Heidelberg, Germany
    • Physikaliches Institut, Heidelberg University

  • Andre Salzinger

    • Physikalisches Institut, Universität Heidelberg, Im Neuenheimer Feld 226, 69120 Heidelberg, Germany
    • Physikaliches Institut, Heidelberg University
    • Physikalisches Institut, Heidelberg University
    • Physikalisches Institut, Heidelberg University, Germany

  • Annika Tebben

    • Physikalisches Institut, Universität Heidelberg, Im Neuenheimer Feld 226, 69120 Heidelberg, Germany
    • Univ Heidelberg
    • Physikalisches Institut, Heidelberg University
    • Physikalisches Institut, Heidelberg University, Germany

  • David Grimshandl

    • Physikalisches Institut, Universität Heidelberg, Im Neuenheimer Feld 226, 69120 Heidelberg, Germany

  • Gerhard Zürn

    • Physikalisches Institut, Universität Heidelberg, Im Neuenheimer Feld 226, 69120 Heidelberg, Germany
    • Physikaliches Institut, Heidelberg University
    • Physikalisches Institut, Universität Heidelberg
    • Physikalisches Institut, Heidelberg University, Germany

  • Matthias Weidemüller

    • Physikaliches Institute, University of Heidelberg, Germany
    • Physikalisches Institut, Universität Heidelberg, Im Neuenheimer Feld 226, 69120 Heidelberg, Germany
    • Univ Heidelberg
    • Physikalisches Institut, Universität Heidelberg
    • Physikalisches Institut, University of Heidelberg; Shanghai Branch, University of Science and Technology of China
    • Physikalisches Institut, Heidelberg University, Germany