Controlling many-body dynamics with driven quantum scars in Rydberg atom arrays
Abstract
Controlling non-equilibrium quantum dynamics in many-body systems is an outstanding challenge as interactions typically lead to thermalization and a chaotic spreading throughout Hilbert space. We experimentally investigate non-equilibrium dynamics following rapid quenches in a many-body system composed of 3 to 200 strongly interacting qubits in one and two spatial dimensions. Using a programmable quantum simulator based on Rydberg atom arrays, we probe coherent revivals corresponding to quantum many-body scars. Remarkably, we discover that scar revivals can be stabilized by periodic driving, which generates a robust subharmonic response akin to discrete time-crystalline order. We map Hilbert space dynamics, geometry dependence, phase diagrams, and system-size dependence of this emergent phenomenon, demonstrating novel ways to steer entanglement dynamics in many-body systems and enabling potential applications in quantum information science.
Cite
@article{arxiv.2012.12276,
title = {Controlling many-body dynamics with driven quantum scars in Rydberg atom arrays},
author = {Dolev Bluvstein and Ahmed Omran and Harry Levine and Alexander Keesling and Giulia Semeghini and Sepehr Ebadi and Tout T. Wang and Alexios A. Michailidis and Nishad Maskara and Wen Wei Ho and Soonwon Choi and Maksym Serbyn and Markus Greiner and Vladan Vuletic and Mikhail D. Lukin},
journal= {arXiv preprint arXiv:2012.12276},
year = {2021}
}
Comments
Supplementary materials at the end