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Tweezer-programmable 2D quantum walks in a Hubbard-regime lattice

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Abstract

Quantum walks provide a framework for designing quantum algorithms that is both intuitive and universal. To leverage the computational power of these walks, it is important to be able to programmably modify the graph a walker traverses while maintaining coherence. We do this by combining the fast, programmable control provided by optical tweezers with the scalable, homogeneous environment of an optical lattice. With these tools we study continuous-time quantum walks of single atoms on a square lattice and perform proof-of-principle demonstrations of spatial search with these walks. When scaled to more particles, the capabilities demonstrated can be extended to study a variety of problems in quantum information science, including performing more effective versions of spatial search using a larger graph with increased connectivity.

Publication Details

Authors
Publication Type
Journal Article
Year of Publication
2022
Journal
Science
Volume
377
Issue
6608
Date Published
08/2022
Publisher
American Association for the Advancement of Science (AAAS)
Pagination
885-889
ISSN
0036-8075, 1095-9203

Contributors

Research Group

Affiliated Research Centers