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TT: Fachverband Tiefe Temperaturen
TT 1: Focus Session: New Routes to Localization and Quantum Non-Ergodicity I (joint session TT/DY)
TT 1.2: Topical Talk
Montag, 9. März 2026, 10:00–10:30, HSZ/0003
Stabilizing Floquet orders to infinite time — •Anushya Chandran1, Shreyas Raman2, Robin Schäfer3, and Alicia Kollàr4 — 1Boston University, Boston, USA — 2Boston University, Boston, USA — 3Helmholtz-Zentrum Berlin, Berlin, Germany — 4University of Maryland, College Park, USA
Floquet engineering, in which the properties of a quantum system are modified through the application of strong periodic drives, is an indispensable tool in atomic and condensed matter systems. It enables quantum simulation, the dynamic stabilization of unstable states, and the realization of exotic topological order and time crystals. However, it is inevitably limited by intrinsic heating processes, so that the engineered states are, at best, pre-thermal. I will describe a general-purpose dissipative scheme that autonomously cools a strongly driven system to close to a desired Floquet engineered state. I will demonstrate this stabilization in a driven many-body spin chain, that either spontaneously breaks a symmetry or exhibits discrete time-crystalline order in the steady state.
Keywords: Floquet phases; pre-thermal; dissipation; autonomous; time crystals