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arXiv · 2208.02909

Quantum Many-Body Scars in Few-Body Dipole-Dipole Interactions

Sarah E. Spielman·Alicia Handian·Nina P. Inman·Thomas J. Carroll·Michael W. Noel
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Abstract

We simulate the dynamics of Rydberg atoms resonantly exchanging energy via two-, three-, and four-body dipole-dipole interactions in a one-dimensional array. Using simplified models of a realistic experimental system, we study the initial state survival probability, mean level spacing, spread of entanglement, and properties of the energy eigenstates. By exploring a range of disorders and interaction strengths, we find regions in parameter space where the three- and four-body dynamics either fail to thermalize or do so slowly. The interplay between the stronger hopping and weaker field-tuned interactions gives rise to quantum many-body scar states, which play a critical role in slowing the dynamics of the three- and four-body interactions.

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Sarah E. Spielman, Alicia Handian, Nina P. Inman, Thomas J. Carroll, Michael W. Noel. 2022-08-04. Quantum Many-Body Scars in Few-Body Dipole-Dipole Interactions. https://doi.org/10.1103/physrevresearch.6.043086

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