Jun 21 – 25, 2021
Högberga Gård
Europe/Stockholm timezone


Högberga Gård, Lidingö, Sweden

Högberga Gård


The Quantum Connections 2021 is part the Quantum Connections series of scientific events, a small post-pandemic workshop that we organize to celebrate Frank Wilczek's many interests in physics.

Quantum Connections events are organized jointly by the Department of Physics and Nordita (hosted by Stockholm University, KTH-Royal Institute of Technology and Uppsala University), together with TD Lee Institute and Wilczek Quantum Center at Shanghai Jiao Tong University.

Curriculum: Talks and discussions on Quantum Connections, Time Crystals, Axions, Emergent gauge theory, Anyons, Quantum Gravity, QCD, ..., from theory to computations and experimental results.

Photos from the workshop

Group_Photo_2 Group_Photo_2

Recorded talks and slides

Monday June 21
2:00 PM Opening Session, Quantum Connections Jian-Wei Pan "Dream or Reality? Photonic Quantum Information Processing the Past, Present and Future" Alternative Link Slides
3:00 PM Yuao Chen "Quantum Simulation with Ultracold Atoms" Alternative Link Slides
7:00 PM Time Crystals Vedika Khemani "Time Crystals" Alternative Link Slides
8:00 PM Norman Yao "(Quantum) Connections Between Time Crystals" Alternative Link Slides
Tuesday June 22
9:00 AM Perspectives and Horizons-1 Michael Turner "The 3rd Cosmologocal Paradigm: less grandly, beyond ACDM" Alternative Link Slides
10:00 PM Sara Strandberg "The present and future of experimental high energy physics" Alternative Link Slides
11:00 AM Discussion: Time Crystals Frank Wilczek "Josephson, Canonically : A Hamiltonian Time Crystals" Alternative Link Slides
Discussion: Axions Matthew Lawson "Introducing The ALPHA Consortium" Alternative Link Slides
4:00 PM Axions Pavel Belov "Wire metamaterials and their applications" Alternative Link Slides
5:00 PM Benjamin Safdi "The State of The Axion" Alternative Link Slides
9:00 PM Perspectives and Horizons-1 David Gross "QCD-A Perfect Theory" Alternative Link Slides
Wednesday June 23
9:00 AM Discussion: Purity Frank Wilczek "Simple Models of Hidden Purity" Alternative Link Slides
10:00 AM Discussion: Time Crystals Alfred Shapere "Random thoughts on time crystals" Alternative Link Slides
Antti Niemi "Schrödninger and Sisyphus - on classical and quantum time crystals" Alternative Link Slides
Discussion: Anyons Martin Greiter "Adiabatic construction of (hierarchical) quantum hall states" Alternative Link Slides
Hans Hansson "From LGCSM theory to wave funktions" Alternative Link Slides
3:00 PM Anyons Michael Manfra "Direct observation of anyonic braiding statistics" Alternative Link Slides
4:00 PM Bertrand Halperin "Fractional Charge and Fractional Statistics in Quantized Hall States" Alternative Link Slides
9:30 PM Chetan Nayak "Non-Abelian Anyons in the FQHE and Topological Quantum Computation" Alternative Link Slides
Thursday June 24
9:00 AM Perspectives and Horizons-2 Per Delsing "A giant artificial atom: Nonexponential decay" Alternative Link Slides
10:00 AM Quantum Gravity Finn Larsen "Quantum Black Holes" Alternative Link Slides
11:00 AM Discussion: Quantum Gravity Maulik Parikh "Detecting Quantum Gravity: The Signal in the Noise" Alternative Link Slides
2:00 PM Discussion: Emergent gauge theory Sid Morampudi "Dynamics of emergent gauge theories" Alternative Link Slides
3:00 PM Perspectives and Horizons-2 William Bialek "Ambitions for theory in biological physics" Alternative Link Slides
4:00 PM Jordan Cotler "Time in quantum mechanics: from particles to spacetimes" Alternative Link Slides
9:00 PM Quantum Gravity John Preskill "Our Quantum Future" Alternative Link Slides
Friday June 25
9:00 AM Discussion: Classical/Quantum Frank Wilczek "Koopman - von Neumann Made Tricky" Alternative Link Slides
Jan Tuziemski "Some aspects of Classical-quantum dynamics" Alternative Link Slides
10:00 AM QCD Mark Alford Title Alternative Link Slides
11:00 AM Zoltan
"(g-2)μ from lattice QCD and experiments-4.2 sigma, indeed?" Alternative Link Slides

Invited Participants:

Name (Affiliation) Name (Affiliation)
  • Mark Alford (Washington University)
  • Richard MacKenzie (Université de Montréal)
  • Egor Babaev (KTH-Royal Institute of Technology)
  • Michael Manfra (Purdue University)
  • Pavel Belov (ITMO University)
  • Alexander Millar (Stockholm University)
  • Emil Bergholz (Stockholm University)
  • Sid Morampudi (Massachusetts Institute of Technology)
  • William Bialek (Princeton University)
  • Chetan Nayak (UC Santa Barbara / Microsoft Station Q)
  • Mohamed Bourenane (Stockholm University)
  • Nathan Newman (Arizona State University)
  • Yuao Chen (University of Science and Technology of China)
  • Antti Niemi (Stockholm University / Uppsala University)
  • Jan Conrad (Stockholm University)
  • Jianwei Pan (University of Science and Technology of China)
  • Jordan Cotler (Harvard University)
  • Maulik Parikh (Arizona State University)
  • Christiane de Morais Smith(Utrecht University)
  • John Preskill (California Institute of Technology)
  • Per Delsing (Chalmers University of Technology)
  • Krishna Rajagopal (Massachusetts Institute of Technology)
  • Martin Greiter (University of Würzburg)
  • Benjamin Safdi (Lawrence Berkeley National Laboratory)
  • David Gross (University of California Santa Barbara)
  • Alfred Shapere (University of Kentucky)
  • Jon Gudmunsson (Stockholm University)
  • Sara Strandberg (Stockholm University)
  • Bertrand Halperin (Harvard University)
  • Michael Turner (University of Chicago)
  • Hans Hansson (Stockholm University)
  • Jan Tuziemski (Stockholm University)
  • Anders Karlhede (Stockholm University)
  • Frank Wilczek (Stockholm University)
  • Vedika Khemani (Stanford University)
  • Biao Wu (Peking University)
  • Finn Larsen (University of Michigan)
  • Norman Yao (University of California Berkeley)
  • Matthew Lawson (Stockholm University)
  • Anthony Zee (University of California Santa Barbara)
  • Timothy Linden (Stockholm University)
  • Val Zwiller (KTH-Royal Institute of Technology)
  • Vincent Liu (University of Pittsburgh)

Schedule of talks and discussions


Time table (with details on activities and social events)


Participation via



We will use Zoom as our platform for all online communications with those participants who will join the workshop remotely. Please use the instructions that you have received by e-mail in order to connect via Zoom.
The meeting link (sent by e-mail) will be the same for the entire workshop and you can join at any time during the talks and discussions. But for your own talk please join at least 30 minutes before the scheduled start time in order to prepare and check the connection and all technical requirements.


For the "on-site" participants who will join the workshop in Stockholm, we have provided accommodation at the workshop's venue and sent the information to those participants individually.

The Organizing Committee:

• Frank Wilczek Stockholm University, Stockholm
• Antti Niemi Stockholm University, Stockholm
• Alfred Shapere University of Kentucky, Lexington
• Hans Hansson Stockholm University, Stockholm
• Pouya Peighami Stockholm University, Stockholm

COVID-19 Restrictions:

At the moment Sweden does not have any demand for self-quarantining after the arrival at the country. But all individuals are required to provide a negative COVID test result (Test type: Antigen, PCR, LAMP or TMA) upon their arrival, not older than 48 hrs even if they have been fully vaccinated.
People who are arriving from a non-EEA* country must be exempted from the general entry ban to Sweden.

We also keep you updated about any changes in the restrictions and if they will affect the event.

For your departure and depending on your destination, you might need to take a COVID test. We will provide you more information about the test locations at Arlanda airport (or outside of the airport) that you can use.

You can always find the latest information, recommendations and updates regarding the COVID-19 from the following sources:

- Swedish Police and border control: https://polisen.se/en/the-swedish-police/the-coronavirus-and-the-swedish-police/travel-to-and-from-sweden/#Non-EEA

- Public Health Agency of Sweden: https://www.folkhalsomyndigheten.se/the-public-health-agency-of-sweden/communicable-disease-control/covid-19/if-you-are-planning-to-travel/recommendations-for-those-travelling/

- Emergency information from Swedish authorities: https://www.krisinformation.se/en/hazards-and-risks/disasters-and-incidents/2020/official-information-on-the-new-coronavirus/restriktioner-och-forbud

Sponsored by:

Stockholm University Nordita Swedish Research Council Wilczek Quantum Institute Tsung-Dao Lee Institute



Högberga Gård
Grindstigen 5-6 181 62 Lidingö
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+46 (0)8 5537 8639