Seminar on Aspects of Quantum Matter Theory

Wegen der Coronavirus-Epidemie findet unser Arbeitsgruppenseminar im SoSe 2021 (bis auf weiteres) jeden Donnerstag von 14:00 bis 16:15 als Videokonferenz statt, wobei wir Zoom verwenden (siehe auch ). Das Seminar beginnt am 15.04.2021. Hierfür erhalten Sie, ab dem 15.04.2021, jeden Donnerstag vor 14:00 Uhr einen Link per email, mit dem Sie über Ihren Webbrowser oder die Zoom-App der online-Fragestunde betreten können. Sie benötigen zur Teilnahme an der Fragestunde einen Zoom-Account. Falls Sie nicht mit der Zoom-App arbeiten wollen (siehe ) sollten Sie den Browser Google Chrome verwenden. Falls Sie am Seminar teilnehmen möchten und nicht Mitglied unserer Arbeitsgruppe sind, kontaktieren Sie bitte Prof. Hofstetter per email.

Our group seminar takes place every Thursday from 14:00 to 16:15  in room 1.101. Each seminar is devoted to presenting our recent work as well as recent publications and developments in the fields of ultracold gases, quantum optics, quantum simulation and quantum many-body systems. Interested students are welcome to attend the seminar.

Please do not confuse our group seminar with the "Condensed Matter Theory Seminar", which is held each Friday at 15:15 in room 1.114.

SS21  WS20/21 SS20  WS19/20

Summer Semester 2021

06/05/21 Youjiang Xu "Realizing Multicriticality in Generalized Dicke Models "
  Martina Jung Journal club: Transverse spin dynamics in the anisotropic Heisenberg model realized with ultracold atoms.
29/04/21 Mathieu barbier Test talk
  Urs Gebert Journal club: Short introduction to topological quantum computing.
22/04/21 Irakli Titvinidze Status update
  Morad Ebrahimkkhas Journal club: Mott insulating states with competing orders in the triangular lattice Hubbard model
15/04/21 Michael Pasek Tutorial: "Introduction to the Git version control system"
  Irakli Titvinidze Tutorial: "Correlated hopping in the Falicov-Kimball model"

Forthcoming schedule of the group seminar (password protected)

Winter Semester 2020/2021

18/02/21 Urs Gebert  Status report 
  Michael Pasek / Jan Lennart Bönsel Status report 
11/02/21 Urs Gebert  Journal club: Microscopy of the interacting Harper-Hofstetter model in the two-body limit
  Irakli Titvinidze  Journal club: Realization of density-dependent Peierls phases to engineer quantized gauge fields coupled to ultracold matter
04/02/21 Jan Lennart Bönsel Journal club: Mixed-State Entanglement from Local Randomized Measurements
  Mathieu Barbier Journal club: Quantum phases of Rydberg atoms on a kagome lattice part-2
28/01/21 Mathieu Barbier Journal club: Quantum phases of Rydberg atoms on a kagome lattice part-1
  Morad Ebrahimkkhas "Anti-ferromagnetic Chern insulator in time-reversal- invariant Harper-Hofstadter-Hubbard model"
21/01/21 Irakli Titvinidze "An Introduction to the Numerical Renormalization Group"
  Jan Lennart Bönsel Status report
14/01/21 Michael Pasek Status report
  Martina Jung Status report
17/12/20 Morad Ebrahimkkhas Journal club: Landau levels in quasicrystals
  Michael Pasek Status report 
10/12/20 Mathieu Barbier Journal club: Quench Dynamics of a Fermi Gas with Strong Long-Range Interactions
03/12/20 Irakli Titvinidze Journal club: Topological states on the breathing Kagome lattice
  Tobias Raum Status report
26/22/20 Michael Pasek Journal club: The Mott transition as a topological phase transition
  Martina Jung Status report
19/11/20 Tobias Raum Journal club: Generalized bulk–boundary correspondence in non-Hermitian topolectrical circuits
  Bernhard Irsigler Journal club: Simulating Twistronics without a Twist
12/11/20 Mathieu Barbier Status report 
  Morad Ebrahimkkhas "Lattice symmetry and emergence of antiferromagnetic quantum Hall states" 
05/11/20 Daniel Wessel  "Robust Generation of Entanglement for Stabilization of the Quantum Computing Platform"
  Irakli Titvinidze Status report

Summer Semester 2020

02/07/20 Urs Gebert Journal club: Many-Body Topological and Skin States without Open Boundaries
  Tobias Raum Status report
25/06/20 Maarten Grorhus Status report
18/06/20 Irakli Titvinidze Status report 
  Michael Pasek Journal club: Observation of Bose–Einstein condensates in an Earth-orbiting research lab
28/05/20 Tobias Raum Journal club: The European Quantum Technologies Roadmap
  Henrik Luetjeharms Status report and journal club: How to read a paper
14/05/20 Mathieu Barbier Journal club: Dynamics of ultracold quantum gases in the dissipative Fermi–Hubbard model 
  Maarten Grorhus Journal club: Topological insulator laser: Theory

Michael Pasek

Journal club: Local Entanglement Entropy and Mutual Information across the Mott Transition in the Two-Dimensional Hubbard Model

Henrik Luetjeharms

Journal club: Quantum phases of dipolar bosons in optical lattices
30/04/20 Irakli Titvinidze Journal club: Many-body topological invariants from randomized measurements in synthetic quantum matter
  Jan Lennart Bönsel Journal club: Topological characterization of periodically driven quantum systems
23/04/20 Bernhard Irsigler  Journal club: Nonlocal annihilation of Weyl fermions in correlated systems 
  Mathieu Barbier Status report

Winter Semester 2019/2020




 Irakli Titvinidze

Talk for APS-meeting
  Bernhard Irsigler Journal club: Quantum-classical simulation of two-site dynamical mean-field theory on noisy quantum hardware


Mathieu Barbier Status report
  Michael Pasek Journal club: Topological field theory of time-reversal invariant insulators


Irakli Titvinidze Journal club: Topological Transition in a Non-Hermitian Quantum Walk


Jan Lennart Bönsel Status report


Mathieu Barbier Journal club: Density wave and supersolid phases of correlated bosons an optical lattice and Quantum phases from competing short- long-range interactions in an optical lattice


Jaromir Panas Status report

Michael Pasek

Status report


Irakli Titvinidze Journal club: Bond formation effects on the metal-insulator transition in the half-filled kagome Hubbard model


Jaromir Panas Journal club: Competing ground states of strongly correlated bosons in the Harper-Hofstadter-Mott model  and Bosonic quantum Hall states in single-layer two-dimensional optical lattices 


Michael Pasek Status report and Journal club: Many-Body Delocalization in the Presence of a Quantum Bath


Bernhard Irsigler Talk for Task-force meeting

Jan Lennart Bönsel

Journal club: To catch and reverse a quantum jump mid-flight



Mathieu Barbier

Status report

Urs Gebert

Journal club: Quantum-Chaos challenges Many-Body-Localization

Jaromir Panas

Status report

Mohsen Hafez-Torbati

Status report

Bernhard Irsigler

Journal club: Observation of nodal-line semimetal with ultracold fermions in an optical lattice