Dag Group: Quantum many-body physics in and out of equilibrium

We are a newly established theoretical research group at Indiana University Bloomington. Our research resides at the intersection of atomic, molecular and optical (AMO) physics, condensed matter theory and quantum information science. 

In this new ArXiv preprint 2504.03842, we demonstrate a subtle competition between cavity frequency and interlayer tunneling in graphene stacks that is responsible for topological phase transitions in light-matter Hilbert space and that cannot be captured by mean-field theory in vacuum. A systematic exploration of multilayer graphene heterostructures and stacking configurations in a chiral tHz cavity reveals that linear dispersion enhances the low-energy cavity-induced topological gap.

• June 2025: 

  • Ceren was chosen to be a Research Corporation for Science Advancement (RCSA) Fellow for the upcoming Quantum Matter and Information program. 

  • Ceren gave talks on "Quantum simulations with neutral atoms" in University of Tennessee's Quantum Center at Chattanooga during its first Quantum Technology Workshop, and in University of Rochester during Rochester Conference on Coherence and Quantum Science. 

  • Terahertz chiral photonic-crystal cavities for Dirac gap engineering in graphene, our collaboration work with Jun Kono Lab at Rice University has been now published in Nature Communications!

• May 2025: 

  • Topological Phase Transitions and Mixed State Order in a Hubbard Quantum Simulator, our collaboration work with Markus Greiner Lab at Harvard University is out on ArXiV!

  • Lauren Li is visiting us from Princeton for five weeks, welcome Lauren!

  • Cole Brzezinski is the first summer undergraduate researcher of the group, welcome Cole!

  • Upcoming: Ceren will speak in Quantum Thermodynamics Symposium at UMD Baltimore. Register here!

• April 2025: 

  • Ceren wrote about the intersection between many-body quantum thermalization and quantum thermodynamics on the new Roadmap preprint, a huge collaboration in the field of Q. Thermo. Check it out!

  • Ceren co-organized a workshop on Controlled Quantum Magnetism at IU Physics, where she also presented a talk on cavity-QED engineering of quantum materials. 

• See older news here.

Physical Address: 

Swain West 302, Department of Physics, 

Indiana University Bloomington

727 E Third St, Bloomington, IN 47405