Synthetic Quantum Matter Group
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Research

We are interested in studying the properties of exotic quantum many-body systems using quantum simulation. Our main interest are:

Quantum simulation of lattice gauge theories

Recent papers:

  1. Ab initio derivation of lattice gauge theory dynamics for cold gases in optical lattices
    Federica Maria Surace, Pierre Fromholz, Nelson Darkwah Oppong, Marcello Dalmonte, Monika Aidelsburger
    arXiv:2301.03474
  2. Stabilizing Lattice Gauge Theories Through Simplified Local Pseudo Generators
    Jad C. Halimeh, Lukas Homeier, Christian Schweizer, Monika Aidelsburger, Philipp Hauke, Fabian Grusdt
    Phys. Rev. Research 4, 033120 (2022) - arXiv
  3. Cold atoms meet lattice gauge theory
    Monika Aidelsburger, Luca Barbiero, Alejandro Bermudez, Titas Chanda, Alexandre Dauphin, Daniel González-Cuadra, Przemys┼éaw R. Grzybowski, Simon Hands, Fred Jendrzejewski, Johannes Jünemann, Gediminas Juzeliunas, Valentin Kasper, Angelo Piga, Shi-Ju Ran, Matteo Rizzi, Gérman Sierra, Luca Tagliacozzo, Emanuele Tirrito, Torsten V. Zache, Jakub Zakrzewski, Erez Zohar, Maciej Lewenstein
    Phil. Trans. R. Soc. A 380, 20210064 (2021) - arXiv
  4. Z2 lattice gauge theories and Kitaev’s toric code: A scheme for analog quantum simulation
    Lukas Homeier, Christian Schweizer, Monika Aidelsburger, Arkady Fedorov, Fabian Grusdt
    Phys. Rev. B 104, 085138 (2021) - arXiv
  5. The rotor Jackiw-Rebbi model: a cold-atom approach to chiral symmetry restoration and quark confinement
    D. González-Cuadra, A. Dauphin, M. Aidelsburger, M. Lewenstein, A. Bermudez
    PRX Quantum 1, 020321 (2020) - arXiv

Ergodicity breaking

Recent papers:

  1. Exploring the Regime of Fragmentation in Strongly Tilted Fermi-Hubbard Chains
    Thomas Kohlert, Sebastian Scherg, Pablo Sala, Frank Pollmann, Bharath Hebbe Madhusudhana, Immanuel Bloch, Monika Aidelsburger
    Phys. Rev. Lett. 130, 010201 (2023) - arXiv
  2. Benchmarking a novel efficient numerical method for localized 1D Fermi-Hubbard systems on a quantum simulator
    Bharath Hebbe Madhusudhana, Sebastian Scherg, Thomas Kohlert, Immanuel Bloch, Monika Aidelsburger
    Phys. Rev. X Quantum 2, 040325 (2021) - arXiv
  3. Observing non-ergodicity due to kinetic constraints in tilted Fermi-Hubbard chains
    Sebastian Scherg, Thomas Kohlert, Pablo Sala, Frank Pollmann, Bharath Hebbe Madhusudhana, Immanuel Bloch, Monika Aidelsburger
    Nature Commun. 21, 4490 (2021) - arXiv

Topological many-body systems

Recent papers:

  1. Thouless pumping and topology
    Roberta Citro, Monika Aidelsburger
    Nature Reviews Physics (2023) - arXiv
  2. Thouless Pumps and Bulk-Boundary Correspondence in Higher-Order Symmetry-Protected Topological Phases
    Julian F. Wienand, Friederike Horn, Monika Aidelsburger, Julian Bibo, Fabian Grusdt
    Phys. Rev. Lett. 128, 246602 (2022) - arXiv
  3. Bosonic Pfaffian State in the Hofstadter-Bose-Hubbard Model
    Felix A. Palm, Maximilian Buser, Julian Léonard, Monika Aidelsburger, Ulrich Schollwöck, Fabian Grusdt
    Phys. Rev. B 103, 161101 (2021) - arXiv

Anomalous Floquet topological systems

Topological lattice models in cold-atom system are often realized via periodic driving, so-called Floquet engineering. While so far these techniques were mostly used for emulating the properties of known static topological phases of matter, periodic driving can give rise to completely new, genuine out-of-equilibrium topological phases.

Floquet quasienergy spectra can exhibit a non-trivial winding, which leads to the appearance of
robust chiral edge modes even in situations where all bulk energy bands have zero Chern number,
so-called anomalous Floquet topological insulators. We have recently realized the relevant parameter regime in a
periodically-modulated honeycomb lattice and revealed the topological properties of the Floquet quasienergy bands via spectroscopic and local Hall deflection measurements [1].

In the future we are planning to investigate the interplay of topology with disorder and interactions.

Recent papers:

  1. Realization of anomalous Floquet topological phases with ultracold atoms
    K. Wintersperger, C. Braun, F. N. Ünal, A. Eckardt, M. Di Liberto, N. Goldman, I. Bloch, M. Aidelsburger
    Nature Physics 16, 1058-1063 (2020) - arXiv