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arXiv · 2504.07207

Many-body quantum dimerization in 2D atomic arrays

Giuseppe Calajò·Matija Tečer·Simone Montangero·Pietro Silvi·Marco Di Liberto
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Abstract

We consider a 2D atomic array coupled to different photonic environments, focusing on the half-filled excitation subspace, where strong photon interactions can give rise to complex many-body states. In particular, we demonstrate that the least radiant state in this sector is well described by a coherent superposition of all possible quantum dimer coverings: a resonating valence bond (RVB) liquid state. We discuss possible strategies to probe this exotic state, along with their limitations and challenges. Finally, we show that such a quantum dimer covering can also emerge as the ground state of the coherent Hamiltonian describing a 2D atomic array coupled to a photonic band-gap material.

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Giuseppe Calajò, Matija Tečer, Simone Montangero, Pietro Silvi, Marco Di Liberto. 2025-04-09. Many-body quantum dimerization in 2D atomic arrays. https://doi.org/10.1103/1r6c-6ftv

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