Tout Wang (Harvard) - "Quantum Phases of 2D Rydberg Atom Arrays"

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The realization of programmable quantum many-body systems capable of coherently controlling hundreds of individual particles is one of the frontiers of quantum science and engineering. Such systems provide unique insights into correlated quantum states of matter and enable new approaches to quantum information processing. Our experimental platform at Harvard consists of defect-free 2D arrays of over 200 laser-cooled neutral atoms trapped in optical tweezers and with long-range van der Waals interactions between highly-excited Rydberg states. Using this platform, we realize a tunable Ising-type quantum spin model with several distinct phases that arise from the interplay between interactions and driving fields. We map out the phase diagram using single-site-resolved state readout, demonstrate high-fidelity preparation of antiferromagnetic Néel-ordered states, identify a quantum phase transition in the (2+1)D Ising universality class, and use non-equilibrium dynamics to probe the nature of a novel phase stabilized by quantum fluctuations.

Видео Tout Wang (Harvard) - "Quantum Phases of 2D Rydberg Atom Arrays" канала harvard_mit_cmt_seminar