Project Details
Projekt
Time reversal and long-range quantum dynamics in 2D quantum magnets.
Applicant
Professor Dr. Christian Groß
Subject Area
Optics, Quantum Optics and Physics of Atoms, Molecules and Plasmas
Term
since 2022
Project identifier
Deutsche Forschungsgemeinschaft (DFG) - Project number 465199066
In our project “Time reversal and long-range quantum dynamics in 2D quantum magnets,” we aim to study out-of-equilibrium quantum dynamics in highly controlled two-dimensional arrays of quantum spins experimentally. The spin system is realized with Rydberg atoms in optical tweezer arrays. Our objectives build upon our efforts to implement a protocol for time reversal in this system pursued in the first phase of the research unit. In particular, we will utilize time reversal to measure out-of-time-order correlators for the characterization of quantum information spreading. Our focus is on two goals: first, we aim to study the stability of topological features, such as the confinement of quantum information to edge states, regarding potentially strong interactions in the system. Second, we will explore limits to the speed of quantum information transport in two-dimensional spin systems with dipolar interactions. This combination of long-range interactions with the system's dimensionality realizes the interesting weak long-range regime. Here, typical initial states are predicted to feature ballistic information transport, but mathematical bounds suggest the existence of special initial states showing super-ballistic transport. Both objectives are highly collaborative between our experimental team and three theoretically working teams of our research unit. They will push the state-of-the-art in experimental control as well as our understanding of quantum transport in complex higher-dimensional geometries.
DFG Programme
Research Units
