Quantum simulation and tunable multi-body interactions in dynamically controlled Rydberg atom arrays
ORAL · Invited
Abstract
Neutral atom arrays driven into Rydberg states are a promising approach for realizing programmable quantum systems, where strong interactions associated with Rydberg blockade allow for simulation of transverse Ising-type models. In this talk, I will discuss dynamical control techniques that extend the capabilities of Rydberg quantum simulators and enable new forms of interactions. Our approach is based on time-dependent modulation of Rydberg laser detuning and leverages controlled deviations from periodic many-body trajectories as a resource for operator spreading. Such time-evolved operators provide a basis for engineering effective Hamiltonians with strong, non-perturbative multi-body interactions and we develop an optimization procedure for realizing specific target many-body models. As applications, we show how to engineer spin chains that dynamically generate large-scale multi-partite entanglement from simple initial states, and how to simulate the dynamics of certain two-dimensional lattice gauge theories in previously inaccessible regimes. I will discuss an experimental implementation of our approach on a Rydberg quantum simulator and give an outlook on promising future directions.
*DOE Gauge-Gravity, DOE Quantum Systems Accelerator, National Science Foundation, Center for Ultracold Atoms, DARPA ONISQ program, DARPA IMPAQT program, the Army Research Office MURI, AWS Generation Q Fund at the Harvard Quantum Initiative, DOE Computational Science Graduate Fellowship, Harvard Quantum Initiative Postdoctoral Fellowship
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Presenters
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Johannes Feldmeier
- Harvard University